Abstract Dichloromethaneboronic acid is obtained in impure form from the reaction of dichloromethyllithium with trimethylborate. Reaction with the appropriate alcohols furnishes the 1, 3 propandiol ester and the diisopropyl ester. Diisopropyldichloromethaneboronate reacts with organolithium or organomagnesium reagents to give substitution products which can be oxidized to aldehydes.
