Hydrogenolysis of enamines. Part II. Hydroboration–protonolysis
Abstract
The organoboranes derived from enamines are converted into olefins in hign yield by ‘protonolysis’ with propionic acid in diglyme. The hydroboration reaction gives only β-amino-organoboranes except with the enamines of disubstituted acetaldehydes when a considerable proportion of the α-amino-borane is formed.