An improved synthesis of chiral 1-[α-(1-azacycloalkyl)benzyl]-2-naphthols
作者:Xuenong Xu、Jun Lu、Yanmei Dong、Rui Li、Zongming Ge、Yuefei Hu
DOI:10.1016/j.tetasy.2003.12.025
日期:2004.2
An improved synthesis of homochiral 1-[alpha-(1-azacycloalkyl)benzyl]-2-naphthols and 1-[alpha-(2-arylpiperidyl)benzyl]-2-naphthols has been achieved by employing diastereomerically pure alpha-benzotriazolyl 1-azacycloalka[2,1-b][1,3]oxazines as homochiral precursors, which were obtained by condensation between nonracemic Betti base and dialdehydes in the presence of benzotriazole. (C) 2003 Elsevier Ltd. All rights reserved.