50 mg of benzil

10mg of NABH4

0.5 ml of ethanol

water 0.5 ml

experiment is synthesis of hydrobenzoin using reduction

please give rhe theoretical yield of hydrobenzoin in the reaction. thx

pls show how to determine the theoretical yield

Most catalysts need Mechanism *2 possibilities 1st mechanism: CH,CH, H OH OH HB-OCH.CH 3-6-3 BOCH,CH3)4 H H-BAH H 2nd mechanism: O-BHs OH II H C -(I). - BOH) decompose H-B-H H/4 Borate ester H H We are using the two-step reaction mechanism (with the borate ester) as the mechanism for this reaction, *Ist mechanism: Alcohol is proton source to protonate oxygen 2nd mechanism: Water is proton source to hydrolyze borate ester (mechanism we are using) Hydrolysis in book is incomplete. Cash 20