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Sourav posted an Question

August 26, 2020 • 03:23 am

30 points

IIT JAM
Chemistry (CY)

What will be the major product in it and please answer the question

2 Answer(s)

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Priyanshu kumar Best Answer

Is it msq sourav??
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yes
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possible products are A,C and D
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B is not formed here
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why
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In B the double bond is in conjugation with Oxygen..so it doesn't react...so cyclopropane here is not formed
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and sir what is the major product
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here sp2 carbon in major product only we have to check
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yes sir.. i guess option A structure will be major?
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yes sourav
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got it na sourav??
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Dinesh khalmaniya 1

option A is correct
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multiple choice qs
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wait..
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option A and B correct. but C and D never be correct
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in option C and D number of sp2 carbons getting different
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B may be possible but will be minor because simmons smith carbene attack on those double bonds which are electron rich
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answer is A C D
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we need to find sp2 carbon of major product only sir.
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yes
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but option D 5 sp2 carbons are present
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so option D is incorrect
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no sir.. it is saying in qs find the sp2 carbon of major product. we dont have to find sp2 carbon of the products in options
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ohh sorry
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then A,C,D is correct
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and A is major have 3 sp2
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because here carbene attack on more substituted double bond
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B is not possible
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because in B cyclopropanation also takes place at double bonds having EWG
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EWG makes the double bond less nucleophilic hence reactivity will be least
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got it?
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Sourav

full qs
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