Synthesis 2021; 53(24): 4654-4661
DOI: 10.1055/a-1558-7457
paper

A Domino Approach for the Synthesis of 4-Carboxamide Oxazolines from Azirines

Ali Nikbakht
a   Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
,
Fariba Mohammadi
a   Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
,
Mohammad Sadeq Mousavi
a   Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
,
Kamran Amiri
a   Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
,
a   Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
b   Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
,
Frank Rominger
c   Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
,
Hamid Reza Bijanzadeh
d   Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran
› Author Affiliations
We thank the Iran National Science Foundation (INSF, Grant No. 97005171) for financial support.


Abstract

A regio- and diastereoselective ring-expansion reaction of N-acylaziridines is described for the synthesis of 4-carboxamide oxazolines using InCl3. A domino Ugi–Joullié/ring-expansion reaction of arylphenylazirines, isocyanides, and carboxylic acids leads to the target products through the N-acylaziridine intermediates in the presence of the indium catalyst. The oxazolines were synthesized in moderate to excellent yields with high atom economy and high bond-forming efficiency under mild reaction conditions.

Supporting Information



Publication History

Received: 17 December 2020

Accepted after revision: 26 July 2021

Accepted Manuscript online:
26 July 2021

Article published online:
17 August 2021

© 2021. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany