Naming Cycloalkanes and Bicyclo Alkanes

Are you struggling with organic chemistry? Download my free ebook "10 Secrets To Acing Organic Chemistry" here: leah4sci.com/or...
leah4sci.com/or... presents: Naming Cycloalkane and Bicyclo alkanes
This video is Part 5 in the Naming Organic Compounds series
This video shows you how to name organic molecules that are fused into a single or double ring compound including substituted cyclic and bicyclic alkanes
Many students struggle with naming because they attempt to come up with the entire name at once and often wind up missing a piece or two. After this series you won't have that problem anymore
Visit my website for additional naming tutorials:
leah4sci.com/naming-organic-compounds-iupac-nomenclature/
Information on scheduling a tutoring session with me: leah4sci.com/or...
And of course my ebook: "10 Secrets To Acing Organic Chemistry" forms.aweber.co...

[@blueangel29100]

Hi Leah :) As a student, I really appreciate your tutorials. It would really help my study in Biochemistry. More power & Godbless!

[@Leah4sci]

You're very welcome, happy to help!

[@mohammed_K1]

7:37 In this point and after the trouble I went through to understand what was going on before watching this video. I realized you are a legend. Hats off to you for this simple explanation 👏👏👏👏👏👏

[@Leah4sci]

Thanks so much :)

[@satishkulkarni7502]

Leah, One of the excellent videos on Organic Chemistry!! You have made it so simple that now i myself can explain it to anyone. You would be the best & excellent teacher!! Best of Luck! And Thanks for this beautiful Video!!

[@Leah4sci]

You're so very welcome and wow, I'm so happy to hear that you really understood the topic!

[@ceciliamwakisha343]

Not yet so sure when to or not to use the prefix iso. Please help.

[@AlineBooneMusic]

You are literally saving my life! I'll have an exam soon and I did well on inorganic chem but don't understand anything when it comes to organic I thought that it was hopeless but now that i found your videos I feel there's hope! Thank you a thousand times!!

[@Leah4sci]

You are welcome a thousand times!

[@AlineBooneMusic]

You're awesome :D! I watched your nomenclature, stereochemistry and acid and bases series and now I'm learning from your substitution and elimination videos :)! Really great videos and if I know someone who is struggling too, I will recommend your channel ;)!

[@Sarahsjourney22]

Omg thank you so much!! I’ve been stuck on this for couple of days and I mastered it with you in less than 15 minutes!

[@Leah4sci]

Woohoo!!! Glad it helped!

[@OrgoMadeEasy]

That was a great vid *****! A lot of student's don't know this but I actually never learned nomenclature in college Orgo @BU, they completely skipped over it, so I've been trying to learn it on my own these past few years lol. Also I really loved the explanation @ 1:11- 2:05 for some reason. lol

[@Leah4sci]

So glad to hear this helped you and that you loved the explanation!

[@ashleyszenay]

Leah, Thank you so much for making this easy to understand! I've spent hours studying my book! I wish I had found your videos sooner.

[@Leah4sci]

So glad I was able to make it easy for you to understand!

[@vringa]

No words to tell how much you helped me with these.

[@Leah4sci]

So glad to hear I helped!

[@chherryflavored]

i LOVE your videos. they're the only ones that make everything so much easier for me! keep up the amazing work! thank you so much!

[@Leah4sci]

Glad you like them!

[@thenyaosifamily8732]

Hey, Leah we are still watching your videos in 2020. Amazing video, wonderful explainations

[@Leah4sci]

Thanks so much! Glad to hear it's helping!

[@shanebergeron1544]

very understanding videos ... also thought I was passed the IUPAC naming sections ... but yours is the only naming for bicyclic compounds ! Thanks !

[@Leah4sci]

You're very welcome

[@dianaacosta7263]

seriously you are awesome. I wish all teachers made orgo this straight forward

[@DMMBX3]

***** lol good point.

[@sucdimohamed4519]

You are the best mwah!

[@Leah4sci]

Wow, thanks so much for your kind words; I'm happy I can help!

[@nadhrahzulkifli8238]

Leah , u are such an excellent online teacher, a massive massive massive thank you for all the videos,They helped me so much in my foundation learning of organic chemistry subject .Greeting all the way from Malaysia :) :D

[@Leah4sci]

You're so very welcome, happy to help!

[@ryandiaz2096]

Thank you for all the great material!! Not a big deal but at around 3:51 I believe it should be methylcyclobutane. Thanks again for all the great videos!!

[@Leah4sci]

OMG wow good catch. You're right, I missed a few letters there. Methylcyclobutane is correct

[@curtpiazza1688]

Wow! I m learning a lot in your brief videos!

[@Leah4sci]

So happy to help!

[@pragnyaambekar7503]

By listing your lecture I get my concept clear

[@Leah4sci]

Happy to clear things up for you!

[@Boom-ei1jz]

You are a very good online tutor.

[@Leah4sci]

Thanks!

[@madogiwa__.]

I've never seen such a wonderful explanation！ It's very helpful for my study in organic chemistry. Thank you so much：）

[@Leah4sci]

So glad to hear that! You're welcome.

[@xxladybug94]

Thank you sooo much!! the color coding really helps me since i'm a visual learner :D

[@Leah4sci]

Same, I love to use colors to teach and to learn!

[@nayonisenarathna9294]

what i learned from this video is REALLY new!!!.................thank u so much.

[@Leah4sci]

You're so very welcome!

[@aslpharmacy]

Wow! I never knew how to name 2 rings when they are fused together. I always found ways to avoid answering them in class, and they never were on the exams. Now I have at least one less thing to worry about. :P Thanks so much!

[@aslpharmacy]

I don't recall ever going over them in class which could easily mean I just fell asleep when they did.

[@Leah4sci]

you're so welcome, happy to help fill in your nap blanks lol

[@thabahanttnnii]

Leah you re just amazing at explaining organic chemistry 😭🤌❤️❤️ thank you soooooo much ❤️❤️

[@Leah4sci]

Aww, you're so welcome! I'm thrilled to hear that my videos are helping you to understand!

[@wispy3180]

THANKS FOR THOSE VIDEOS! Subscribed for sure! A helpful organic youtube channel. Studying for my test on Monday :(

[@wispy3180]

So hard. We had one hour and it was so long. I couldn't finish it. :(

[@Leah4sci]

You're so welcome, happy to help!

[@ydkak]

the way you explained you jst nailed it maam you jst nailed ittt jst awesome

[@Leah4sci]

Thank you :)

[@mmmaheesa5946]

Thank you so much for your clear explanation, I am very happy with your explanation❤️❤️

[@Leah4sci]

You're welcome 😊

[@sandrealpounds9783]

You make Organic seem so easy! Thank you so much!

[@Leah4sci]

You're very welcome, glad I can help!

[@yogeshthakur6477]

Thank u very much U r the best tr on youtube.

[@Leah4sci]

you're welcome

[@meghparajaydeep3179]

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[@Leah4sci]

Glad I could help!

[@souravchowdhury8902]

Thank you so much 😊😊😊.this video help me to understand the topic easliy.

[@Leah4sci]

Happy to help! You're welcome.

[@manpreetbedi303]

GREAT VIDEO. MAKES SO MUCH SENSE THAN MY PROFESSOR'S LECTURE

[@Leah4sci]

So glad I could help!

[@kathlea61]

YOU ARE AWESOME AF THANK YOU SO MUCH MAY YOU CONTINUE TO GUIDE US IN CHEMISTRY

[@Leah4sci]

You're very welcome!

[@priyankakhelkar3938]

you are just awesome...i always refer to your videos...your teaching techniques are excellen!!!...thankyou

[@Leah4sci]

You're very welcome!

[@siddhigupta913]

A very nice and clear explanation thanks a lot

[@Leah4sci]

Glad the video helped! You're welcome!

[@Dop3ritrean]

OMG!! You made this way more simple than my Orgo professor. He goes at warp speed and so its hard to follow!!! Thanks!! Do you have a video on conformation?

[@Leah4sci]

You're very welcome, happy to clear it up for you!

[@lemondropslipstaon7818]

Thanks for helping me! 🥰🥰🥰

[@Leah4sci]

Happy to help!

[@JOSAMUELJO]

really good and easy to follow

[@Leah4sci]

Glad you liked it!

[@pradyumna2103]

highly useful and ultra simple. thanks for making such videos. please add videos on spiro compounds too.

[@Leah4sci]

Glad you enjoyed it

[@JoePlaysChess]

that would definetly be my recomendation to my friends

[@Leah4sci]

Thanks for the recommendation, that's the highest praise I can get!

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thank you so much. I owe you for my exam. Have a nice day~

[@Leah4sci]

You're welcome, so happy to help!

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there need to be a SUPER LIKE

[@kusalseven3563]

XD

[@Leah4sci]

Aww thanks!

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[@Leah4sci]

So happy to help!

[@raginiprabakar8007]

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[@Leah4sci]

You're so very welcome!

[@taifalyassiri]

Thank you so much, this video has been useful in my studies.

[@Leah4sci]

You're so very welcome, happy I could help!

[@taifalyassiri]

You reply after 10 years!!! this comment when i was a first class student at dentistry school, now i’m dentist.. this is hilarious 😂😂

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[@Leah4sci]

You're very welcome, and thanks for sharing

[@dharmiksoni6203]

all concept is clr from this video,thank you a lot

[@Leah4sci]

You're very welcome!

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[@Leah4sci]

Awww, you're very welcome

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Thank you for the explanation I am watching you from Iraq 🇮🇶♥️.

[@Leah4sci]

You're so welcome!

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[@Leah4sci]

You're very welcome!

[@rajanyadav851]

hi...i am 12th student...i love your method....

[@Leah4sci]

thank you!

[@patmi2946]

tomorrow is our exam in org chem gahhh thanks for your helpful video 😊

[@Leah4sci]

You're very welcome, happy to help!

[@ninanino5209]

You are amazing i'm understood to you .thank you so so much 🌸🌿👍

[@Leah4sci]

Glad I could help!

[@blsanywful]

Thank You! It really helped!

[@Leah4sci]

Glad I could help!

[@seemaagarwal7873]

Excellent video. Just wanted to ask in 5:19 how do I decide which gets higher priority i.e. why not start 1 from the lonely methyl group ? Is there a priority order or are we to apply ethyl being aplhabetically earlier than methyl gets 1 ?

[@corybenz5667]

If you start at the lone methyl group and number it 1, than number the ethyl and methyl group above as both 3, the name will be: 3-ethyl-1,3-dimethylcyclohexane. In comparison, by starting with both the ethyl and methyl as 1 (as leah did) and the lone methyl as 3, the name is: 1-ethyl-1,3-dimethylcyclohexane Comparing the two names: 3-ethyl-1,3-dimethylcyclohexane 1-ethyl-1,3-dimethylcyclohexane (Leah) Notice how leah's name gives a lower number (1) than the other number (3) for the ethyl group. REMEMBER: YOU WANT TO HAVE THE LOWEST NUMBER POSSIBLE FOR EACH GROUP WHEN NAMING, hence 1 is lower than 3. Also, the reason why ethyl is written before methyl is because e comes before m in the alphabet. You DON'T include: di, tri, tetra, etc. in the name when comparing which is first in the alphabet. B(utyl) before E(thyl) before M(ethyl) before P(ropyl) (carbons 1-4) Hope this helped

[@Leah4sci]

As @corybenz5667 explained, the goal is to get the total lowest set of numbers for your substituents

[@rittenbrake1613]

very very good , thank you

[@Leah4sci]

Thanks and you're welcome :)

[@ازهرعبدالستارعبدالعباسعبدالخضر]

thanx leah

[@Leah4sci]

you're welcome!

[@peky852]

Thank you!

[@Leah4sci]

You are welcome

[@DogeDELUX]

@3:51 you wrote methyclobutane, I think you meant to write methylcyclobutane lol

[@Leah4sci]

oops, you're right! thank you for pointing that out.

[@Fgfgt7]

Thank you very much ❤ Can you help us with structures that have a plane of symmetry ?

[@Leah4sci]

With regards to naming? Or something else?

[@Fgfgt7]

@Leah4sci how many planes of symmetry they have

[@ritorito4076]

manythanks 😍😍😍😍😍👏👏👏👏👏👏

[@Leah4sci]

You're welcome.

[@jawadawan5497]

you are awesome....TYSM

[@Leah4sci]

You're so very welcome!

[@hildacampos9057]

THANK YOU.

[@Leah4sci]

You're very welcome!

[@automateus3825]

Thank you for uploading this video. :-)

[@Leah4sci]

You're very welcome!

[@maxnguyen3503]

In 4:13, I don't think that it is a ring because it is not the longest change because you can get 8 carbons instead of 6. Am I wrong? Pls tell me. Help would be appreciated as I don't want to repeat this mistake again in my upcoming exam.

[@Leah4sci]

You've asked a good question. This is a ring at 4:13, and it is treated as a parent chain of 6 carbons. When numbering our parent chain, we do not transition from alkyl groups into the ring itself. Either the ring is the parent chain, or if you have an alkyl group with a greater number of carbons than the ring itself, that alkyl group can be used as the primary parent chain. In this case, the longest alkyl group is 2 carbons, so we treat it as a substituent.

[@maxnguyen3503]

@@Leah4sci OK thanks! :D

[@Sabagat]

AAaahhhhh My head is gonna explode, but with happiness, got a little Lizzie McGuire dancing in my head. The tips to draw the byciclo helped me a lot. you would pee your pants with the one that I tried to draw myself before this tutorial. Thank you sooo much.!!!

[@Leah4sci]

lol, so happy to help! And I love how descriptive your writing is :)

[@zainabbohra2915]

approachable teaching thank u for that but How can I download 10 secrets...... of chemistry plzz help me ..... thank u

[@Leah4sci]

Thank you for your kind words! You can download it here: orgosecrets.com

[@mahesv75974]

5:23 can I just write 1-ethylmethyl-3-methyl-cyclyohexane or would that be wrong?

[@Leah4sci]

That would be incorrect. The IUPAC rules dictate that we name similar substituents together, along with a prefix to denote how many of those substituents are present on the molecule. In this case, the two methyl groups get named as “dimethyl” with the locants of those two methyl groups listed in front. Hope this helps!

[@diller468]

thanks for this

[@Leah4sci]

You are very welcome!

[@walidnettour3172]

u are the best.thnx

[@Leah4sci]

You're very welcome!

[@nikkaobenario436]

I am confused on how you numbered the carbon atoms @4:25. Can I go the other way around by starting from the bottom (with an attached C atom as 1-methyl) as my carbon 1? Please help me. Thanks a lot. :D

[@corybenz5667]

If you start at the lone methyl group and number it 1, than number the ethyl and methyl group above as both 3, the name will be: 3-ethyl-1,3-dimethylcyclohexane. In comparison, by starting with both the ethyl and methyl as 1 (as leah did) and the lone methyl as 3, the name is: 1-ethyl-1,3-dimethylcyclohexane Comparing the two names: 3-ethyl-1,3-dimethylcyclohexane (Your suggestion) 1-ethyl-1,3-dimethylcyclohexane (Leah) Notice how leah's name gives a lower number (1) than the other number (3) for the ethyl group. REMEMBER: YOU WANT TO HAVE THE LOWEST NUMBER POSSIBLE FOR EACH GROUP WHEN NAMING THE CARBON CHAIN. That is why leah started numbering at the ethyl and methyl group rather than the lone methyl group.

[@nikkaobenario436]

Thank you so much! I really appreciate your effort.

[@Leah4sci]

Your goal is to have the total lowest set of numbers, if you start at the bottom you'll get 1, 3 and 3. But the way I counted you get 1, 1, 3 for a total lower set

[@vijayasgulalakayi2623]

@9:58 , u wrote isopropyl first and then methyl U have considered on the basis of alphabet or numbers??????

[@Leah4sci]

Alphabet. i comes before m

[@nishamolbaby1450]

Thank you

[@Leah4sci]

You're welcome!

[@sobechukwumadueke6348]

This video make "excess senses" ,thanks a lot

[@Leah4sci]

Too funny! You're welcome

[@XpertPilotFSX]

9:47 - how do you know if it's a 3-isopropyl or 3-(ethyl Methyl?)

[@whiteninjaooo]

iso means that 1 of the 3 carbons which make propyl have 2 methyls on it. this is something u will just have to memorize, as it doesnt follow the IUPAC rules.

[@Leah4sci]

If you meant 3-(methylethyl) then the answer is both. isopropyl is a common name for the methylethyl substituent

[@tguan466]

3:51 shouldnt it be methycyclobutane?

[@aqeelsonu]

Is it only "isopropyl" which is an exception? or is any other substituent with 'iso' is an exception?

[@aqeelsonu]

at 9:47

[@diemdinh73]

+shaik aqeel you can have isopropyl and isobutyl

[@GravisTKD]

The other "common name" butyl substituents will be treated in the same way -- so "secbutyl" and "tertbutyl" will be treated as if they begin with "S" and "T", respectively, for the purposes of alphabetizing. I realize you wrote this question a long time ago, so you may have learned this a long time ago. But I wanted to make sure to answer, just in case :)

[@MizzSmilezz]

hi! great videos, really helping me understand organic chem! i have a question though... when writing the # of carbons on each side of the ring for a bicycloalkane, in BRACKETS [2, 2, 1] for example. Whats the order in the brackets? is it right, left, bridge, or left, right, bridge? or left, bridge, right? thanks!

[@boluwatifeakande2509]

I know this won’t mean anything rn cause it’s been like 9 years since this comment but She stated that when numbering you start from the ring that has the highest number of exclusive carbons

[@Leah4sci]

thank you!

[@TheLule93]

Thanks!

[@Leah4sci]

You're welcome!

[@anteater2536]

thanks miss.

[@Leah4sci]

You're welcome!

[@pilotosko8424]

Hello and Thank you for those great videos ☺ u help me a lot. I have a question...why should I count clockwise at the last bicyclo compound? why can't I start at the higher substitueted C atom and count Anti CLockwise ...to get 1- Isopropyl-5-Methylbicyclo (4.4.0)decan?

[@Leah4sci]

You are very welcome! I'm sorry, but I don't offer tutoring through KZbin comments. For more help with naming and other orgo 1 & 2 topics, I recommend joining the orgo study hall. Full details: leah4sci.com/join

[@israachemistry]

thank 4 you sooooooooooooo much

[@Leah4sci]

You're very welcome!

[@tribui6122]

could you explain for me? why write number 1 to 10 from right to left ?

[@vijayasgulalakayi2623]

tri bui Because , the priority is given to heavy functional grp , which is on rgt cyclic compound

[@Leah4sci]

Functional group priority determines the direction for numbering

[@Allenstabzz1455]

Thank you very muchh .... =)

[@Leah4sci]

You're very welcome!

[@rockdaddysgirlsharmin6839]

Thank you so much ...I have Organic Final this Upcoming Monday .......:'(

[@Leah4sci]

You're welcome! I hope it went well!

[@amerkhaled4321]

thx u very very much

[@Leah4sci]

You're so welcome!

[@syedumair3172]

Can we name 1-ethyl-1,3-dimethylcyclohexane as 1-sec-butyl 3-methyl cyclohexane?

[@syedumair3172]

At 4:55

[@diemdinh73]

+Syed Umair the two equations you wrote is not interchangeable

[@zibzabzoo100]

i thought that as well?? i am 95% sure that is correct unless there is a weird rule

[@pyaripreeti7715]

dont we number the chains in the way that the smaller alkyl or radical group gets lowest nbr? you gave ethyl lower nbr and the methyl got higher nbr

[@Leah4sci]

at which part of the video are we referring to?

[@jayjayklain8516]

your good

[@Leah4sci]

thanks

[@MizzSmilezz]

alright, thankyou! :D

[@Leah4sci]

You're welcome!

[@mintandmind6424]

Awesome

[@Leah4sci]

thanks

[@subhodiproy536]

Best

[@Leah4sci]

Thanks

[@asmapathan865]

I am confused in last example, how come 3-isopropyl there?????

[@Leah4sci]

At which part of the video please?

[@hitenvaghela6162]

how to draw trycyclo structure form its IUPAC name ??

[@Leah4sci]

I'm sorry, but I don't offer tutoring over KZbin comments. For more help with this, I recommend joining the orgo study hall. Full details: leah4sci.com/join

[@DurayStuffCrafts]

Where is spiro nomenclature???

[@Leah4sci]

Do you mean my video? Haven't created one on it yet

[@painkush]

Haha it aint free..so cdnt join..nyways grt tutorial..plz post as many as free vdos..so.that we can learn ...:)

[@Leah4sci]

Will do!

[@daisyshibooye2735]

Wooow ☺️

[@Leah4sci]

:)

[@bosonsbotany9934]

WOW......:D

[@Leah4sci]

Glad you enjoyed it!

[@maryamnadeem7312]

109k views but only 1.1k likes why people are that much disgusting

[@Leah4sci]

Perhaps they're too busy practicing to hit the like button?

[@josephnderitu129]

You are too fast

[@Leah4sci]

If the video goes too quickly for you, you can always change the playback speed under settings. :)

[@Boom-ei1jz]

You are a very good online tutor.

[@Leah4sci]

Thank you!