A reexamination of the reaction between pyruvic acid and aniline
作者:Inés Tapia、Victoria Alcazar、Manuel Grande、Joaquín R. Moran
DOI:10.1016/s0040-4020(01)86016-6
日期:1988.1
The structure of the main product of the reaction when aniline is added to pyruvic acid is the tetrahydroquinoline lactone (2). When the reaction is carried out by adding the acid to aniline, a crystalline substance is obtained whose methyl ester has probably the structure (8). This methyl ester on acid treatment cyclized to 2,4-dimethoxycarbonyl-2-methyldihydroquinoline (10).
Synthesis of<i>meta</i>-substituted anilines<i>via</i>a three-component reaction of acetone, amines, and 1,3-diketones
作者:Andrew R. Galeev、Maksim V. Dmitriev、Ivan G. Mokrushin、Irina V. Mashevskaya、Andrey N. Maslivets、Michael Rubin
DOI:10.1039/c9ob02120e
日期:——
facile method for the synthesis of meta-substituted arylamines from acyclic precursors was developed. This method is based on three-component cyclo-condensation/aromatization of in situ generated imines of acetone with 1,3-diketones either under conventional heating or under microwave irradiation. The utility of this methodology is illustrated by the possibility of a gram scale synthesis of various anilines