Palladium-catalyzed carbonylation. A new synthesis of .alpha.-methylene .gamma.-, .delta.-, .epsilon.-lactams and lactones including bicyclic lactams of pyrrolizidine and indolizidine skeletons
Palladium-catalyzed carbonylation. A new synthesis of .alpha.-methylene .gamma.-, .delta.-, .epsilon.-lactams and lactones including bicyclic lactams of pyrrolizidine and indolizidine skeletons
Addition of carbon nucleophiles to cyclic N-acyliminium ions in SDS/water
作者:Nilton Soares Camilo、Ronaldo Aloise Pilli
DOI:10.1016/j.tetlet.2004.02.009
日期:2004.3
The acid-catalyzed addition of 1,3-dicarbonyl compounds and activated olefins (silyl enol ethers and ethyl vinylether) to N-Boc-2-methoxypyrrolidine (1a) and N-Boc-2-methoxypiperidine (1b) in SDS/water medium is described. Good yields of the corresponding 2-substituted N-Boc pyrrolidines were generally observed from 1a while moderate yields prevailed from 1b.
Addition of carbon nucleophiles to cyclic N-acyliminium and oxocarbenium ions under solvent-free conditions
作者:Luiz Antonio F. de Godoy、Nilton Soares Camilo、Ronaldo Aloise Pilli
DOI:10.1016/j.tetlet.2006.09.023
日期:2006.11
The InCl3-catalyzed addition of carbon nucleophiles to cyclic N-acyliminium and oxocarbenium ions under solvent-free conditions at room temperature is described. The corresponding-substituted heterocycles were obtained in moderate to excellent yields. (c) 2006 Elsevier Ltd. All rights reserved.
MORI, MIWAKO;WASHIOKA, YUMIKO;URAYAMA, TAKAO;YOSHIURA, KAGARI;CHIBA, KATS+, J. ORG. CHEM., 1983, 48, N 22, 4058-4067
Palladium-catalyzed carbonylation. A new synthesis of .alpha.-methylene .gamma.-, .delta.-, .epsilon.-lactams and lactones including bicyclic lactams of pyrrolizidine and indolizidine skeletons
作者:Miwako Mori、Yumiko Washioka、Takao Urayama、Kagari Yoshiura、Katsumi Chiba、Yoshio Ban