Synthesis of 2-(Diphenylphosphoryl)pyrrolidine-1-carboxamides Based on the Reaction of 1-(4,4-Diethoxybutyl)ureas with Diphenyl Chlorophosphine
作者:A. V. Smolobochkin、R. A. Turmanov、A. S. Gazizov、N. O. Appazov、A. R. Burilov、M. A. Pudovik
DOI:10.1134/s1070363219100244
日期:2019.10
The reactions of 1-(4,4-diethoxybutyl)ureas with diphenyl chlorophosphine in the presence of acetic acid afforded new 2-(diphenylphosphoryl)pyrrolidine-1-carboxamides.
Cyclization of 1-(4,4-diethoxybutyl)-3-arylureas: a case study
作者:Andrey V. Smolobochkin、Almir S. Gazizov、Julia K. Voronina、Alexander R. Burilov、Michail A. Pudovik
DOI:10.1007/s00706-017-2080-z
日期:2018.3
a valuable method of synthesis of various heterocycles. Herein we report the study on the reaction of (4,4-diethoxybutyl)ureas with nucleophilic aromatics. We have found that the structure of the products mainly depends on the strength of the acid used as catalyst as well as aromatic nucleophile nature and its concentration. Either 2-arylpyrrolidines, diarylbutanes, bispyrrole derivatives, or pyrro