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Issue 14, 2013
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Synthesis of 3,4-dihydro-2H-1,4-benzo[b]thiazine derivatives via DABCO-catalyzed one-pot three-component condensation reactions

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Abstract

A series of 3,4-dihydro-2H-1,4-benzo[b]thiazines (34 examples) were efficiently synthesized in good to excellent yields through a 1,4-diazabibicyclo[2.2.2]octane (DABCO) catalyzed one-pot, three-component reaction of 2-aminobenzenethiol, aromatic aldehydes and α-halogenated ketones in the presence of K2CO3. The mechanism for this process was briefly discussed with a tentative catalytic cycle proposed.

Graphical abstract: Synthesis of 3,4-dihydro-2H-1,4-benzo[b]thiazine derivatives via DABCO-catalyzed one-pot three-component condensation reactions

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Article information


Submitted
09 Jan 2013
Accepted
25 Jan 2013
First published
28 Jan 2013

RSC Adv., 2013,3, 4643-4651
Article type
Paper

Synthesis of 3,4-dihydro-2H-1,4-benzo[b]thiazine derivatives via DABCO-catalyzed one-pot three-component condensation reactions

J. Wu, Y. Shang, C. Wang, X. He, Z. Yan, M. Hu and F. Zhou, RSC Adv., 2013, 3, 4643
DOI: 10.1039/C3RA00123G

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