The enantioselective synthesis of 3-hydroxypyrrolidin-2-ones and 3-hydroxy piperidin-2-ones has been carried out in high enantiomeric excess employing immobilized lipase from Pseudomonas cepacia. (C) 2003 Elsevier Ltd. All rights reserved.
A Study of Some 2,3-Dioxopyrrolidines and Derived Bipyrrolidines<sup>1</sup>
作者:PHILIP L. SOUTHWICK、EDWARD P. PREVIC、JOSEPH CASANOVA、E. HERBERT CARLSON
DOI:10.1021/jo01116a009
日期:1956.10
Reductive Alkylation of Tertiary Lactams via Addition of Organocopper (RCu) Reagents to Thioiminium Ions
作者:Pierre Mateo、Joséphine E. Cinqualbre、Melinda Meyer Mojzes、Kurt Schenk、Philippe Renaud
DOI:10.1021/acs.joc.7b02150
日期:2017.12.1
A simple procedure for the conversion of tertiary lactams to 2-monoalkylated cyclic amines is described. The reaction sequence involves conversion of a lactam to a thioiminium ion followed by reaction with an organocopper (RCu) reagent and final reduction with triacetoxyborohydride. The reaction is high yielding and shows an excellent functional group tolerance. Its utility is demonstrated by a rapid