Small rings. 29. Synthesis and ring expansion of vinylazetidines. A synthesis of hydroazocines
作者:Alfred Hassner、Norbert Wiegand
DOI:10.1021/jo00369a018
日期:1986.9
ROBERTO, DOMINIQUE;ALPER, HOWARD, J. AMER. CHEM. SOC., 111,(1989) N9, C. 7539-7543
作者:ROBERTO, DOMINIQUE、ALPER, HOWARD
DOI:——
日期:——
HASSNER A.; WIEGEND N., J. OGR. CHEM., 51,(1986) N 19, 3652-3656
作者:HASSNER A.、 WIEGEND N.
DOI:——
日期:——
Novel synthesis of pyrrolidinones by cobalt carbonyl catalyzed carbonylation of azetidines. A new ring-expansion-carbonylation reaction of 2-vinylazetidines to tetrahydroazepinones
作者:Dominique Roberto、Howard Alper
DOI:10.1021/ja00201a040
日期:1989.9
Pyrrolidinones can be synthesized in high yields and regioselectivity by the cobalt carbonyl catalyzed carbonylation of azetidines. For 2-substituted azetidines (alkyl, aryl, CH 2 OH, CH 2 OR, CH 2 OCOR, and COOR), carbonyl insertion occurs in the more or less substituted ring carbon-nitrogen bond depending on the kind of substituent group and on the reaction temperature. In the case of 2-vinylazetidines