Copper-Catalyzed Cascade Syntheses of 2H-benzo[b][1,4]thiazin-3(4H)-ones and Quinoxalin-2(1H)-ones through Capturing S and N Atom Respectively from AcSH and TsNH2
- 28 July 2010
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Organic Chemistry
- Vol. 75 (16), 5768-5771
- https://doi.org/10.1021/jo101253a
Abstract
A copper-catalyzed cascade method has been developed to synthesize the 2H-benzo[b][1,4]thiazin-3(4H)-ones from 2-halo-N-(2-halophenyl)-acetamides 1 and AcSH via the S(N)2/deacetylation/coupling process, and to synthesize the quinoxalin-2(1H)-ones from 1 and TsNH(2) via the S(N)2/coupling/desulfonation process. The target products were obtained with diversity at three positions on their scaffolds.Keywords
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