N-Phosphinyl Phosphoramide-A Chiral Brønsted Acid Motif for the Direct Asymmetric N,O-Acetalization of Aldehydes
作者:Sreekumar Vellalath、Ilija Čorić、Benjamin List
DOI:10.1002/anie.201005347
日期:2010.12.10
Fine‐tuning the sites: The readily accessible N‐phosphinyl phosphoramide 1 proved to be highly efficient and enantioselective in catalyzing the title reaction. The synthetic utility of this methodology was demonstrated with the first catalytic asymmetric synthesis of the analgesic pharmaceutical (R)‐chlorothenoxazine (see scheme).