Issue 31, 2017

A copper-catalyzed Ritter-type cascade via iminoketene for the synthesis of quinazolin-4(3H)-ones and diazocines

Abstract

We have developed a copper-catalyzed Ritter-type reaction/cyclization cascade of anthranilic acids and nitriles, affording the quinazolin-4(3H)-ones. The cascade proceeds through a Ritter-type reaction capturing the iminoketene intermediates by nitriles. Furthermore, we found a novel Ritter-type reaction/condensation/intramolecular anti-Markovnikov hydroamination cascade, providing access to functionalized diazocines in one-pot.

Graphical abstract: A copper-catalyzed Ritter-type cascade via iminoketene for the synthesis of quinazolin-4(3H)-ones and diazocines

Supplementary files

Article information

Article type
Communication
Submitted
22 Feb 2017
Accepted
28 Mar 2017
First published
04 Apr 2017

Chem. Commun., 2017,53, 4362-4365

A copper-catalyzed Ritter-type cascade via iminoketene for the synthesis of quinazolin-4(3H)-ones and diazocines

T. Abe, K. Kida and K. Yamada, Chem. Commun., 2017, 53, 4362 DOI: 10.1039/C7CC01406F

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