M. Alami et al., STEREOSELECTIVE MANGANESE-CATALYZED COUPLING REACTION OF CONJUGATED CHLOROENYNES AND CHLORODIENES WITH GRIGNARD-REAGENTS, Synlett, (3), 1998, pp. 325-327
In the presence of the soluble complex MnCl2 . 2LiCl (3%), conjugated
chloroenynes and chlorodienes readily react with alkyl Grignard reagen
ts in THF-DMPU to afford stereoselectively enynes and dienes in good t
o excellent isolated yields.