The Mukaiyama-Michael Reaction of N-Acyl-2,3-dihydro-4-pyridones: Regio- and Stereoselective Synthesis of cis-2,6-Disubstituted 1,2,5,6-Tetrahydropyridines
摘要:
[GRAPHICS]A convenient regio- and stereoselective preparation of 1,2,5,6-tetrahydropyridines of the type 1 has been developed, starting from readily available N-acyl-2,2-dihydro-4-pyridones 2.
Thermodynamic equilibration of dihydropyridone enolates: application to the total synthesis of (+/−)-epiuleine
作者:Edward S. Tasber、Robert M. Garbaccio
DOI:10.1016/j.tetlet.2003.10.030
日期:2003.12
as its vinyltriflate (3). This enolate interconversion is dependent on the dihydropyridone C-2 substituent and can be interpreted in terms of conformational analysis. This novel scaffold (3) opens another avenue for the strategic deployment of dihydropyridones into both natural product synthesis and drug discovery. To this end, this method is highlighted by its use as a key step in a total synthesis
Catalytic Enantioselective Addition of Dialkylzinc Reagents to<i>N</i>-Acylpyridinium Salts
作者:M.â Ãngeles Fernández-Ibáñez、Beatriz Maciá、Mariaâ Gabriella Pizzuti、Adriaanâ J. Minnaard、Benâ L. Feringa
DOI:10.1002/anie.200904981
日期:2009.11.23
A pinch of salt: The first catalyticaddition of dialkylzincreagents to N‐acylpyridinium salts with good yields and excellent enantioselectivities uses a copper–(S)‐L complex as the catalyst. The versatility of the method is illustrated in the formal synthesis of the alkaloid (R)‐coniine. Bn=benzyl, Tf=trifluoromethanesulfonyl.
The Mukaiyama-Michael Reaction of <i>N</i>-Acyl-2,3-dihydro-4-pyridones: Regio- and Stereoselective Synthesis of <i>cis</i>-2,6-Disubstituted 1,2,5,6-Tetrahydropyridines
作者:Jeffrey T. Kuethe、Daniel L. Comins
DOI:10.1021/ol9908124
日期:1999.10.1
[GRAPHICS]A convenient regio- and stereoselective preparation of 1,2,5,6-tetrahydropyridines of the type 1 has been developed, starting from readily available N-acyl-2,2-dihydro-4-pyridones 2.