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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 37, 2007 - Issue 19
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Original Articles

Solvent‐Free Synthesis of Benzothiazolines in the Presence of Alumina

Mitsuo Kodomari Department of Applied Chemistry, Shibaura Institute of Technology, Koto‐ku, Tokyo, JapanCorrespondence[email protected]
,
Akihito Satoh Department of Applied Chemistry, Shibaura Institute of Technology, Koto‐ku, Tokyo, Japan
,
Ryo Nakano Department of Applied Chemistry, Shibaura Institute of Technology, Koto‐ku, Tokyo, Japan
&
Tadashi Aoyama Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, Chiyoda‐ku, Tokyo, Japan
Pages 3329-3335 | Received 01 Jan 2007, Published online: 05 Oct 2007
 
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Abstract

o‐Aminothiophenol reacted with ketones and β‐keto esters in the presence of alumina under mild and solvent‐free conditions to afford the corresponding benzothiazolines in high yields. Alumina can be reused for subsequent reactions without any loss of the activity.

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