Grignard Reagent Reaction Mechanism

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thaank you so so much you are brilliant and your teaching style is amazing

[@ritankarmondal0411]

Can't thank you enough man! I was facing doubts in grignard reagent and this cleared everything! And a quick question. For the compound in 9:45 won't a ring expansion be more favourable before the addition of the -R group?

[@ashaydwivedi420]

this is an SNAE mechanism! rearrangement is only possible when a carbocation is formed. this reaction involves carbanion nucleophile and no carbocations are formed, so no rearrangements

[@a0927020973]

4:28 Why magnesium will insert the carbon atom?

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Thank you for making me understand the addition of 2 R-groups.

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wdym

[@negar21100]

@7:03 Why didn't O get protonated at this moment? Why did it kick the OCH3 out instead?

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A big „thank you“ from Germany 😇👌🏽

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Awesome vid, can't say it enough.I smacked that sub button

[@ujjwalkumarsingh5216]

Thanku sir ..I had confusion in this part

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thanks for your teaching!!

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Am so proud of you

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Thankyou , your deep explanation is attached to show more than one video and you are show everything in rxn ,what I to do. India (Hindi)

[@amirfilabs7716]

At 12:18 I believe this is an epoxide ring opening under basic conditions so the OH lands on the more substituted atom, please correct me if I’m wrong

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Great video!

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[@laurensadowski-o5n]

9:28 are there supposed to be that many carbons attached to the grignard reagent?

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At 7:14 why didn't the O¯ get protonated and turned into an alcohol instead?

[@Household-rn1pc]

Thank you so much for solving my problem ❤

[@uditvarshney3653]

4:14 how can you make it Grignard reagent without dry ether

[@toxicevolution5940]

Doesnt it matter that you change the position of the CH3 Group in the first example?

[@fantasiaford1283]

So, the Ch3Ch2, we use it twice because we need the oxygen to be negative in order for it to do the proton transfer of hydronium? So it can be an alcohol?

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[@fredt8167]

At 3:35, if we had to name this structure would be it be (A) 1-ethyl cyclohexanol or (B) 1-ethyl cyclopentanol? If its (B), why? when counting the longest chain starting with the ethyl group

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A very useful video, thanks!

[@CR1257]

How do you know what side to put your reagent on? I keep thinking that you could choose either or because you’ll still end up with the same answer..? 08:26 I’ve seen others put their reagents on the aldehyde side and they’ve gotten it the answer right.

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[@phenomenalphysics3548]

6:53 how do I know something is a good leaving group?

[@zhangzhengyifan6117]

the less basicity one group is ,the better it acts as a leaving group

[@ritikshukla1788]

The more stable the leaving group is as an individual the better the leaving group

[@ritikshukla1788]

(in the case of CH3O- the negative charge is on oxygen which is highly electronegative and hence the molecule is stable)

[@jeewanpreetkaur5872]

Which is individually stable that is gud leaving group

[@urvitiwari6754]

is attack by GR always SN2? is there a possibility of rearrangement or ring expansion?

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could you please make a discussion about Reaction of Grignard Reagents with Epoxides thank you

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Had to go to this video after seeing a legendary meme about the reagent. Who would've guessed a well edited clip of black'n'white daffy duck would be so funny?

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Why is at times the h30+ is written under the arrow and other times it isnt even though its still used

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[@bbannannassu]

if there is not indication that there are 2 equivalents of grignard reagent then will the product be ketone?

[@Bdots44]

would be aldehyde with only 1 equivalent of grignard

[@Bdots44]

no nvm, 1 eq of grignard means the reactant is aldehyde or ketone, but the products will always be alcohols for the girgnard reagent. 2 eq of grignard means reactant is ester or acid chloride and the product will be an alcohol with 2 R groups. For 1 eq of grignard that reacts with either aldehyde or ketone, product will also be alcohol but with only 1 R group

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[@drakemastronardi4924]

At 4:49 was in the carbon partial -?

[@juststudy9989]

No

[@pantelisafroudakis7117]

One question...if we add to the ester one mole of grignard reagent...will the reaction stop to the ketone? For example...if we have the solution of the ester and we add slowly and dropwise one mole of the grignard reagent in ether/THF solution ...will it stop to the ketone?

[@anonymus2280]

Yes if you are using only one equivalent

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Thanks

[@RotationMan13]

How do you know of the Carbon is partially positive or negative?

[@ujjwalkumarsingh5216]

When carbon is attached to a more electronegative atom like O of N ..the more electronegative atom attracts the shared pair of electrons from the electron cloud towards itself ..so it develops partial negative charge.

[@siobhanquinn4635]

I’m struggling to understand how you could only have three carbons and end up with four in the end ?

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Im learning from these this one just seemed like you were going kind of fast.

[@shammah5976]

example 4 at 7:34 why are there 2 ch2ch3 to react with??

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Any one know the program he using in explication ?