Synthesis 2016; 48(10): 1550-1560
DOI: 10.1055/s-0035-1561405
paper
© Georg Thieme Verlag Stuttgart · New York

Hofmann Rearrangement of Carboxamides Mediated by N-Bromo­acetamide

Ivana I. Jevtić
a   Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia   Email: misai@chem.bg.ac.rs
,
Ljiljana Došen-Mićović
a   Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia   Email: misai@chem.bg.ac.rs
,
Evica R. Ivanović
b   Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade-Zemun, Serbia
,
Milovan D. Ivanović*
a   Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia   Email: misai@chem.bg.ac.rs
› Author Affiliations
Further Information

Publication History

Received: 25 December 2015

Accepted after revision: 09 February 2016

Publication Date:
11 March 2016 (online)


Abstract

An efficient, one-pot procedure for the Hofmann rearrangement of aromatic and aliphatic amides has been developed. Methyl and benzyl carbamates are produced with N-bromoacetamide in the presence of lithium hydroxide or lithium methoxide, in high yields. β-Phenylamino amides gave five-membered cyclic ureas stereospecifically. Side products of aryl or benzyl bromination were minimized. This procedure offers an easy access to various protected amines or diamines, which represent important synthetic precursors.

Supporting Information