1i think tertiary is more stable as it has a whopping 9 hyperconjugants and 3 +I groups... while benzyl has 0 hyperconjugants + resonance (as far as i know phenyl group withdraws by negligible -I effect also)...
Till today i thought that benzyl cation was more stable than tertiary...
But today I saw in a Engineering book that actually they both have almost equal stability but given a chioce tertiary is favoured...
can anybody confirm it.....
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6 Answers
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1ya its all about HYPERCONJUGATION over here.................nothing else i think
1Yeah tertiary's more stable.... but in RK GUPTA it is givenbenzyl is more stable
1reason tert has 9 hyperconjugation and +I
benzyl has resonace 5 and -I
-I plays villain