Im. Akhmedov et al., ASYMMETRIC ENE REACTIONS OF 2-METHYLPROPENE WITH CHLOROALDEHYDES IN THE PRESENCE OF BORONTRIFLUORIDE-L-MENTHYLETHYL ETHERATE, Synthetic communications, 24(2), 1994, pp. 137-143
The asymmetric ene reactions of prochiral chloroaldehydes, chloral and
2,3-dichlorobutanal with 2-methylpropanal in the presence of BF3 l-me
nthylethyl etherate gave optically active homoallylic alcohols in 16-2
2% ee. The dechlorination of the chloro alcohols lead to the unsaturat
ed derivatives of alcohols.