Synthesis and resolution of 1-(α-pyrrolidinylbenzyl)-2-naphthol and its application in the resolution of 2,2′-dihydroxy-1,1′-binaphthyl
作者:Mariappan Periasamy、Meda Narsi Reddy、Shaik Anwar
DOI:10.1016/j.tetasy.2004.04.030
日期:2004.6
samples that can be readily purified to enantiomeric purity through preparation of hydrogen bonded aggregates. The homochiral 1-(α-pyrrolidinylbenzyl)-2-naphthol 2 is useful in the resolution of racemic 2,2′-dihydroxy-1,1′-binaphthyl (BINOL) 3 via preparation of the corresponding diastereomeric borate complexes using B(OH)3.
使用苯甲醛,2-萘酚和吡咯烷在乙醇中的温度为78°C,可以轻松地以95%的产率制备1-(α-吡咯烷基苄基)-2-萘酚2。使用廉价的1-(+)-酒石酸将其拆分,即可获得非外消旋体样品,这些样品可通过制备氢键结合的聚集体轻松纯化至对映体纯度。的纯手性的1-(α-pyrrolidinylbenzyl)-2-萘酚2是外消旋2,2的分辨率有用' -二羟基- 1,1 '联萘(BINOL)3经由制备采用B相应的非对映体配合物的硼酸盐的(OH )3。