carboxylic acids

what is the product A??
http://img266.imageshack.us/i/43982323.png/

1 Answers

39
Pritish Chakraborty ·

Similar to beta-keto acids; alpha,beta-unsaturated acids also decompose by a cyclic transition state and the loss of CO2. Here the ring/state is 5-membered. Bond breaking and making happens instantaneously, as you'd expect from a transition state.

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