反应详情

4-Cyanostilbene (41 g) prepared by a known method was agitated in 300 ml of ether at room temperature, to which 33.5 g of bromine was dropwise added. After stirred for additional one hour, the reaction mixture was filtered to obtain 55.5 g of 4-cyanostilbene dibromide.

1. additionwas dropwise added
2. filtrationthe reaction mixture was filtered