:The reaction of N-silylated iminoethers with 2-substituted acetyl chlorides yields activated 2-azadienes. These were shown to react with electron-deficient acetylenic dienophiles to yield pyridones. They also react with quinones to give the corresponding aromatized cycloadducts in good yields. The reaction of a-azadienes with activated nitriles provided a very practical route towards polysubstituted pyrimidones. A multicomponent protocol is reported which combines a N-t-butyldimethylsilyl iminoether, an acetyl chloride derivative and a dienophile in the presence of triethylamine without isolation of any intermediate. This provides an extremely practical and versatile route to various mono- and polycyclic azaaromatics with a predictable substitution pattern. Yields ranged from 43 % to 94 % for the complete sequence. (C) 1999 Elsevier Science Ltd. All rights reserved.
A Diels-Alder route to pyridone and piperidone derivatives
作者:Francy Sainte、Beatrice Serckx-Poncin、Anne Marie Hesbain-Frisque、Leon Ghosez
DOI:10.1021/ja00369a049
日期:1982.3
BOUAMMALI, B.;PAUTET, F.;FILLION, H.;CARNEIRO, S.;BOITARD, M.;BERIEL, H., LYON PHARM., 42,(1991) N, C. 256
作者:BOUAMMALI, B.、PAUTET, F.、FILLION, H.、CARNEIRO, S.、BOITARD, M.、BERIEL, H.
DOI:——
日期:——
SAINTE, F.;SERCKS-PONCIN, B.;HESBAIN-FRISQUE, A. -M.;GHOSEZ, L., J. AMER. CHEM. SOC., 1982, 104, N 5, 1428-1430
作者:SAINTE, F.、SERCKS-PONCIN, B.、HESBAIN-FRISQUE, A. -M.、GHOSEZ, L.