Stereospecific and Stereoselective Reactions and Asymmetric Synthesis (Elementary Idea)

[@Rahul-ie9yr]

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[@amitbasak4819]

Wishing you all the best ..enjoy learning chemistry

[@reemashreemahanta4511]

Yes sir please do more videos on organic chemistry reagents name reaction etc.. it'll be very helpful

[@saakshipandey3637]

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[@amitbasak4819]

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[@udeeptabhadra1578]

Thanks for the wonderful intellectual hard work put into this lecture. Best Wishes.

[@amithags5799]

Very very high standard lecture....thank you sir for the wonderful session

[@harbansh6396]

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[@AdiChemAdi]

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[@Dr-SanjayYadav]

Excellent Explanations 🙏

[@krishnapriyak6290]

Great lecture..Thank you sir🙏🙏

[@chemistryvoice981]

Professor... awesome lecture. Thank you.

[@kumarirashmi8293]

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[@amitbasak4819]

Thank you. What I would like to see " let our students like you shine like diamond in their future career"..Amit Basak

[@ajaikumarpal]

Marvellous ❤️❤️

[@ranikulal1667]

Excellent lecture

[@arunnanta5506]

Sir can you suggest some book for Advance stereo selective synthesis..?

[@sapanadubey8307]

Sir what is the relation between diastereoselective and setreoselective reactions

[@amitbasak4819]

Stereoselective Reactions are divided into two: enantioselective reaction and diastereoselective reaction. In enantioselective reaction, one enantiomer is formed in preference to the other. The degree of selectivity is measured by the enantiomeric excess. In a diastereoselective reaction, one diastereomer is formed in preference to another. In this case, either two or more stereo enters are formed in a single step such that one relative stereochemistry (e.g. syn or anti) is favoured or a pre-existing stereo enter influences the stereochemical outcome during the creation of another. The degree of relative selectivity is measured by the diastereomeric excess. Example: addition of ethyl magnesium bromide to 2R-2-phenylpropanal to give one major diastereomer (outcome predicted by Cram’s model) or formation of meso-2,3-dibromobutane from Br2 addition to E-2-butene or formation of dl-2,3-dibromobutane from Br2 addition to Z-2-butene etc.

[@UsamaKhan-zy5pp]

Love from Pakistan 😘♥️

[@ignosius911]

Legend!!!

[@CLPA111]

Sir,is Sn1 reaction nonstereoselective and nonstereospecific? Kindly reply.

[@amitbasak4819]

Yes, SN1 reactions are non stereospecific as well as non stereoselective, because the nucleophile approach is not governed by the structure of the reactant (non-stereospecific). As the product is usually a racemic mixture (considering the reaction is happening at an existing sp3-stereogenic center (chiral center)). Only in case of tight ion pair mechanism, as the nucleophile mostly approaches from the backside, the reaction is stereoselective as well as stereospecific.

[@CLPA111]

@@amitbasak4819 Sir, I am feeling grateful after getting reply from you. Thank you so much sir for giving such an informative knowledge on stereochemistry. 🙏🏼

[@ajayjat1914]

Actually SN1 is characterized by partial racemization where inversion is more than retention thus it would be Stereoselective reaction not specific as one net stereoisomer is formed!

[@ombugad9828]

Plz arrange the vedio sequence type so understanding is better

[@AdiChemAdi]

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[@pramodshahji1794]

Great

[@pranavkombe2201]

THANKS!!

[@shyamalkumarmondal6616]

Thanks sir🙏

[@ekalavyaacademy599]

Revised