Ethyl Bromide → HCID 19080480, compound

Participants

Reaction Conditions

Reaction Steps

While stirring under nitrogen, 21.5 g (83 mmol) of ethyl bis(2-methylphenyl)phosphinite are slowly added dropwise to a solution of 18.4 g (42 mmol) of 2,2'-bis(bromo-methyl)-1,1'-binaphthyl in 100 ml of o-xylene, which solution has been heated to 120° C., with ethyl bromide distilling off. After the end of the addition, the mixture is heated under reflux for a further two hours and is then cooled to 0° C. The solid is filtered off, washed with cold o-xylene and dried in vacuo. This gives 25.1 g (81%) of colorless crystals having a melting point of 231°-234° C.

Provenance & Evidence