Condensation of Conjugated Enones With Diethyl Aminomalonate: A New and Convenient Access to 2,2-Bis(ethoxycarbonyl)-3,4-dihydro-2<i>H</i>-pyrroles
作者:Gaston Bedel Itoua、Jean-Yves Laronze
DOI:10.1055/s-1987-27941
日期:——
2,2-Bis-(ethoxycarbonyl)-3,4-dihydro-2H-pyrroles are prepared from conjugated enones and diethyl aminomalonate by a one-step cyclocondensation reaction. Reduction of the products with sodium cyanoborohydride affords the corresponding pyrrolidines.
Sanno, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1958, vol. 78, p. 1119,1122
作者:Sanno
DOI:——
日期:——
ITOUA G. B.; LARONZE J. -Y., SYNTHESIS,(1987) N 4, 353-357
作者:ITOUA G. B.、 LARONZE J. -Y.
DOI:——
日期:——
Rapid synthesis of substituted pyrrolines and pyrrolidines by nucleophilic ring closure at activated oximes
作者:Nandkishor Chandan、Amber L. Thompson、Mark G. Moloney
DOI:10.1039/c2ob26423d
日期:——
Substituted pyrrolines are available by ringclosure initiated by direct nucleophilic attack of stabilized enolates at the nitrogen of oximes activated with a leaving group, in a process which effectively out-competes the more usual Beckmann rearrangement. Subsequent reduction provides diastereoselective access to the corresponding pyrrolidines. This provides a rapid route to saturated heterocyclic