FACILE ONE-POT SYNTHESIS OF 4-ARYL-3-METHYL-1-PHENYLPYRAZOLO[3,4-b]-[1,5]BENZOTHIAZEPINE DERIVATIVES VIA A REGIOSELECTIVE NUCLEOPHILIC ADDITION
作者:Fawi M. Abd El Latif、Eman A. El Rady
DOI:10.1080/10426500490274646
日期:2004.2.1
4-Arylidene-3-methyl-1-phenylpyrazole-5-one reacts with 2-amino-benzenethiol in ethanol-acetic acid solution to produce a mixture of 4-aryl-3-methyl-1-phenylpyrazolo[3,4-b][1,5]benzothiazepines, 2-arylbenzothiazoles and 3-methyl-1-phenylpyrazole-5-one.
A dry media procedure has been developed for the synthesis of a series of new class of pyrazolo [4,3-c][1,5]benzothiazepines 6 under microwave irradiation using montmorilloniteK10 as solidsupport. The catalyst can be recovered and reused. Thus, the procedure provides a simple and green synthetic methodology under environmentally friendly conditions. Antifungal screening of synthesized compounds has