A highly efficient aza-MoritaâBaylisâHillman reaction (aza-MBH reaction) of N-tosyl salicylaldehyde imines with α,β-unsaturated ketones has been achieved by using β-isocupreidine (β-ICPD) as the catalyst (10 mol%) to give the corresponding adducts in good to high yields (90%âquant.) and excellent eeâs (up to 99% ee), with adducts showing the opposite absolute configuration to that of those obtained in the similar aza-MBH reaction of N-tosyl aldimines with α,β-unsaturated ketones.
以δ²-异紫苏烷(δ²-ICPD)为催化剂(10 mol%),实现了N-对
甲苯磺酰基
水杨醛亚胺与δ,δ-不饱和酮的高效杂-MoritaâBaylisâHillman反应(杂-MBH反应),得到了相应的加合物,产率高(90%),ee值优异(ee值高达99%),加合物的绝对构型与N-对
甲苯磺酰基醛
亚胺与δ,δ-不饱和酮的类似杂-MBH反应相反。加合物的绝对构型与 N-对甲基苯磺
酰亚胺与δ,δ-不饱和酮的类似偶氮-MBH 反应中得到的加合物的绝对构型相反。