Conjugated imines and iminium salts as versatile acceptors of nucleophiles
作者:Makoto Shimizu、Iwao Hachiya、Isao Mizota
DOI:10.1039/b814930e
日期:——
development of synthetic methodologies where nucleophilicaddition reactions to imino carbons are utilized in crucial steps. This article summarizes double nucleophilicaddition reactions with alpha,beta-unsaturated aldimines, addition reactions using alkynyl imines, "umpoled" reactions of alpha-imino esters, and the use of iminium salts as reactive electrophiles.
An expedient approach to synthesize fluorescent 3-substituted 4H-quinolizin-4-ones via (η<sup>4</sup>-vinylketene)-Fe(CO)<sub>3</sub> complexes
作者:Alfredo Rosas-Sánchez、Rubén A. Toscano、José G. López-Cortés、M. Carmen Ortega-Alfaro
DOI:10.1039/c4dt03021d
日期:——
From simple starting materials, an efficient methodology for the synthesis of 3-substituted 4H-quinolizin-4-ones using (η4-vinylketene)-Fe(CO)3 complexes as key intermediates was developed. Fluorescent properties and quantum yields were determined.
Synthesis of Bicyclic Compounds Containing a 2-Pyridone Structure by Addition Reactions of Malonic Esters to Alkynylpyridines, Pyrimidine, and Thiazoles
作者:Makoto Shimizu、Iwao Hachiya、Masaki Atarashi
DOI:10.3987/com-05-s(t)54
日期:——
4H-Quinolizin-4-ones, 6H-pyrido[1,2-a]pyrimidin-6-ones, and 5H-thiazolo[3,2-a]pyridin-5-ones were prepared by addition reactions of malonicesters to 2-alkynylpyridines, pyrimidine, and thiazoles.