Synthesis of 4‐Substituted‐ and 1,4‐Disubstituted‐4‐Hydroxypyrrolidin‐2‐ones
摘要:
This report describes the synthesis of 4-substituted- and 1,4-disubstituted4-hydroxypyrrolidin-2-ones by cyclization of intermediate gamma-aminoesters prepared from alkylbenzylamines, gamma-bromoketones, and lithio ethyl acetate.
Synthesis of 4‐Substituted‐ and 1,4‐Disubstituted‐4‐Hydroxypyrrolidin‐2‐ones
摘要:
This report describes the synthesis of 4-substituted- and 1,4-disubstituted4-hydroxypyrrolidin-2-ones by cyclization of intermediate gamma-aminoesters prepared from alkylbenzylamines, gamma-bromoketones, and lithio ethyl acetate.
[reaction: see text] Highly enantioselective Reformatsky reaction of ketones was accomplished using cinchona alkaloids as chiral ligands. Chelation with the sp(2)-nitrogen adjacent to the reactive carbonyl center contributed the enantioface discrimination for the high enantioselectivities.
β-NAPHTHYL DERIVATIVES OF ETHANOLAMINE AND N-SUBSTITUTED ETHANOLAMINES
作者:TONY IMMEDIATA、ALLAN R. DAY
DOI:10.1021/jo01211a005
日期:1940.9
Synthesis of 4‐Substituted‐ and 1,4‐Disubstituted‐4‐Hydroxypyrrolidin‐2‐ones
作者:Christopher R. Kinsinger、Chad D. Tatko、Christopher M. Whelan、Timothy J. Wilkinson
DOI:10.1080/00397910701319023
日期:2007.6.1
This report describes the synthesis of 4-substituted- and 1,4-disubstituted4-hydroxypyrrolidin-2-ones by cyclization of intermediate gamma-aminoesters prepared from alkylbenzylamines, gamma-bromoketones, and lithio ethyl acetate.