作者:José Luis García Ruano、José Alemán、M. Belén Cid
DOI:10.1055/s-2006-926306
日期:——
Optically pure 2-(l-hydroxybenzyl)piperidine and pyrrolidine were prepared by reaction of oxygenated 2-(p-tolylsulfinyl)benzyl carbanions with the appropriate chlorinated N-sulfinylimines followed by subsequent elimination of the sulfinyl groups. The main reaction is a tandem process involving nucleophilic addition of the sulfinylbenzyl carbanion to the C=N bond followed by intramolecular elimination
光学纯的 2-(1-羟基苄基)哌啶和吡咯烷通过氧化的 2-(对甲苯基亚磺酰基)苄基碳负离子与适当的氯化 N-亚磺酰基亚胺反应,随后消除亚磺酰基来制备。主要反应是一个串联过程,包括将亚磺酰基苄基碳负离子亲核加成到 C=N 键上,然后通过生成的酰胺在分子内消除氯。配对的试剂(在它们各自的亚磺酰基部分表现出相同的构型)随着对两个新产生的手性碳的立体选择性的完全控制而演变。