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Shristy posted an Question

September 05, 2020 • 17:10 pm

30 points

IIT JAM
Chemistry (CY)

Nu additi00 tnc a.

Nu additi00 tnc A. ...........................................

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A
Amol ashok pawar

yes 5 membered ring do have angle strain which is greater than 6 membered ring. 6 membered ring have least amount of angle strain
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Priyanshu kumar

Rate of solvolysis is SN1 reaction...and You know for SN1 reaction Rate of reaction directly proportional to stability of carbocation
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check for carbocation stability in all these compounds
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so what will be the order sir
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shristy with increase in ring size carbocation stability increases
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as ring size directly proportional to +,I effect and inversely proportional to -I effect
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and +I effect increases the stbaility of carbocation
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Now for tert butyl carbocation there is 10 hypercojugative structure...(9 alpha hydrogen) and in case of cyclohexyl carbocation(last one) there is 7 alpha hydrogen...
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so stability order is 1>5>4>3>2
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but sir order given is 4>1>3>5>2.......and the reason given it as 5 member ring does not have any angle strain
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but i think my explanation is right...but again let me confrm shristy
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A
Amol ashok pawar Best Answer

Nucleophilic addition will be more likely at the angle strained species so the order will be 3 membered followed by 4 5 and 6
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but 5 member ring does not have any angle strain so it will greater than 6 member ring ???
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