08-07-2009 дата публикации
Номер: CN0101475603A
Принадлежит:
The invention belongs to the field of chiral compound synthesis, in particular to a novel method for selectively synthesizing single or double chiral ferrocenylamines. The method comprises: adding sodium borohydride into an alcobolic solution of a ferrocenylimine compound at a temperature of no more than 5 DEG C, stirring the mixture for reaction for 7 to 10 hours, and obtaining a ferrocenyl sec-amine compound by separating and purifying products obtained after the reaction; and preparing an alcobolic solution of the ferrocenyl sec-amine, adding ammonium formate and a palladium-carbon catalyst into the alcobolic solution, heating the solution for refluxing for 1 to 3 hours, and obtaining the single or double chiral ferrocenylamines after post treatment. The method uses cheap sodium borohydride as a reducing agent, simplifies reaction steps, reduces reaction cost, requires mild reaction conditions, is easy to synthesize industrially and achieves 99 percent of diastereomers.
Подробнее