Abstract
3-CMoro-α,β-dibromoethylbenzene was prepared via I2 catalyzed bromination of 3-chloro-α-bromoethylbenzene. It was dehydrobrominated with aqueous NaOH in the presence of n-Bu4N+HSO4 − to give 3-chloro-α-bromostyrene in 92% overall yield.
Samarium metal reacts with diselenides in the presence of a catalytic amount of potassium iodide to generate samarium(III) selenolates. Samarium (III) selenolates thus formed in situ, react with acid chlorides to give selenoesters in moderate yields.