Novel ligands based on bromosubstituted hydroxycarbonyl [2.2]paracyclophane derivatives: synthesis and application in asymmetric catalysis
作者:Natalia V. Vorontsova、Galina S. Bystrova、Dmitrii Yu. Antonov、Anna V. Vologzhanina、Ivan A. Godovikov、Michail M. Il’in
DOI:10.1016/j.tetasy.2010.03.038
日期:2010.4
planar-chiral hydroxycarbonyl [2.2]paracyclophane derivatives, 4-acetyl-13-bromo-5-hydroxy[2.2]paracyclophane (Br-АНРС, 63%) and 4-benzoyl-13-bromo-5-hydroxy[2.2]paracyclophane (Br-BHPC, 53%), were synthesized and reacted with the enantiomers of α-phenylethylamine to form corresponding Schiff bases, 12-bromo-4-hydroxy-5[1-(1-phenyl-ethylimino)-ethyl]-[2.2]paracyclophane and 12-bromo-4-hydroxy-5[1-(1
新的平面手性羟羰基[2.2]对环环烷衍生物,4-乙酰基-13-溴-5-羟基[2.2]对环环烷(Br-АНРС,63%)和4-苯甲酰基-13-溴-5-羟基[2.2]对环烷(Br-BHPC,53%)被合成并与α-苯基乙胺的对映异构体反应以形成相应的席夫碱,即12-溴-4-羟基-5 [1-(1-苯基-乙基亚氨基)-乙基]-[ 2.2]对环环烷和12-溴-4-羟基-5 [1-(1-苯基-乙基亚氨基)-(苯基)亚甲基-[2.2]对环环烷。解析了亚胺的非对映异构体,并通过X射线衍射确定了其绝对构型,进而确定了Br-АНРС对映体的相应构型。