PROCESS FOR PRODUCING OPTICALLY ACTIVE 4-CHLORO-3-HYDROXYBUTANAL COMPOUND

摘要

The present invention provides a new method capable of producing an optically active 4-chloro-3-hydroxybutanal compound. The present invention relates to a method of producing optically active 4-chloro-3-hydroxybutanal compound (2), which comprises a step of reacting chloroacetaldehyde with aldehyde compound (1) in the presence of optically active pyrrolidine compound (5).
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒR 1 -CH 2 CHO€ƒ€ƒ€ƒ€ƒ€ƒ(1)
wherein each symbol is as defined in the specification.