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Title: Novel clay-catalysed expeditious cyclization to bis-benzothiazepine
Authors: Singh, Pravin K
Srivastava, Vishal
Singh, J
Siddiqui, I R
Keywords: Benzothiazepine;clay-catalyzed;Claisen-Schmidt condensation;microwave irradiation;fungicide
Issue Date: Oct-2005
Publisher: CSIR
IPC Code:  Int.Cl.7 C 07 D // A 61 P 31/10
Abstract: A microwave-expediated, high yielding synthesis of 4,4'-bis(2''-aryl-2'',3''-dihydro-1'',5''-benzothiazepin-4"-yl)bibenzyls 3a-j involving Claisen-Schmidt condensation of 4,4'-diacetylbibenzyl with aromatic aldehyde at room temperature followed by cyclocondensation with  2-aminothiophenol on montmorillonite K 10 clay in solvent-free condition under microwave is reported.All compounds show promising antifungal activity against Fusarium oxysporum and Penicillium citrinum. Structure-activity relationships for the screened compounds are discussed.
Page(s): 2178-2182
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.44B(10) [October 2005]

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