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Paper | Regular issue | Vol 63, No. 10, 2004, pp.2309-2318
Published online, 23rd August, 2004
DOI: 10.3987/COM-04-10169
An Efficient Synthesis of Benzene Fused Six-, Seven- and Eight-membered Rings Containing Nitrogen and Sulfur by Benzyne Ring Closure Reaction

Chandrani Mukherjee and Ed Biehl*

*Department of Chemistry, Southern Methodist University, Dallas, TX 75275, U.S.A.

Abstract

3,4-Dihydro-2-H-benzo[1,4]thiazines (3a—c), 2,3,4,5-tetrahydro[b]-[1,4]thiazapines (3d—f) and 2,3,4,5-tetrahydro-2H-benzo[b][1,4]thiazocines (3g—i) were prepared by the cyclization of the respective 2-bromophenylsulfanyl derivatives of ethylamine (1a—c), propylamine (2d—f) and butylamine (2g—i).