Mild and Efficient Tf2O-Mediated Synthesis of 3-Amino-1-benzofurans
摘要:
A mild and efficient procedure has been developed for the synthesis of 3-amino-1-benzofurans by intramolecular cyclization of the corresponding N,N-disubstituted phenoxyacetamides under the action of trifluoromethanesulfonic anhydride in the presence of 2-fluoropyridine in methylene chloride at room temperature. The proposed novel and efficient protocol has been successfully utilized to obtain a wide series of 3-amino-1-benzofurans with various substituents in the benzene ring and amino group.
Mild and Efficient Tf2O-Mediated Synthesis of 3-Amino-1-benzofurans
作者:P. Anil、A. Chatterjee、S. Vijaya Laxmi
DOI:10.1134/s1070428019090173
日期:2019.9
A mild and efficient procedure has been developed for the synthesis of 3-amino-1-benzofurans by intramolecular cyclization of the corresponding N,N-disubstituted phenoxyacetamides under the action of trifluoromethanesulfonic anhydride in the presence of 2-fluoropyridine in methylene chloride at room temperature. The proposed novel and efficient protocol has been successfully utilized to obtain a wide series of 3-amino-1-benzofurans with various substituents in the benzene ring and amino group.
Synthesis of Nitrogen-Containing Phenoxyacetic Acid Derivatives
作者:E. T. Yamansarova、O. S. Kukovinets、R. A. Zainullin、F. Z. Galin、M. I. Abdullin
DOI:10.1007/s11178-005-0201-3
日期:2005.4
Nitrogen-containing phenoxyacetic acid derivatives were synthesized by reactions of substituted phenoxyacetic acids with amines, urea, and ethyl carbamate.