Question

Mechanism #1. Suggest a mechanism for the following reaction and propose a practical method to the equilibrium to the right. actical method for driving C ome onsenson - OCH3 + CH (CH), OH H Choose O(CH2),CH, + CH,OH

Answer 1

11) This is the final product place. Further he ester. (1) This is the reaction of ester with alcohol in which formation of ester as a final product will take place. In first step, protonation of ketone takes place. Further reaction with alcohol takes place and final product will be ester. This reaction or equilibrium can shift into the right direction by increasing the concentration of alcohol in the reactant, concentration of H+ and temperature. Due to this the activation energy of the reaction decreases and it will shift to the right direction.

Dots represent the lone pair of electrons on the oxygen atoms. So, the complete reaction with the arrow pushing mechanism is given as below:-

ои > H Löchs + CH3 (CH2) 3 0h у | och3/4 си, сне), би Дch) ch, @pcha) з сиз се + си30 со сл.) Сиз + cИЗОИ +Н By product) (maion product)