NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemistry -Section B (IJC-B) >
IJC-B Vol.50B [2011] >
IJC-B Vol.50B(05) [May 2011] >

Title: Synthesis of some novel isoxazolyl pyrimido[4,5-d][1,3]-thiazol-7-ones, isoxazolyl-2-(4-oxo-4H-1,3-benzothiazin-2-yl)acetamides and isoxazolyl thiazolidinones from isoxazolyl cyanoacetamide synthon
Authors: Rajanarendar, E
Murthy, K Rama
Reddy, M Nagi
Reddy, K Govardhan
Keywords: Isoxazolyl cyanoacetamide
Issue Date: May-2011
Publisher: NISCAIR-CSIR, India
Abstract: The synthesis of title compounds has been achieved from isoxazolyl cyanoacetamide 2 synthon. Isoxazolyl cyanoacetamide 2 has been obtained by reaction of 4-amino-3-methyl-5-styrylisoxazole 1 with ethyl cyanoacetate. The cyclocondensation of 2 with aryl isothiocyanates in presence of sulphur followed by subsequent reaction with acetic anhydride afforded isoxazolylpyrimido[4,5-d][1,3]-thiazol-7-ones 4a-i. Compounds 2 have been converted to isoxazolyl 2-(4-oxo-4H-1,3-benzothiazin-2-yl)acetamides 5a-f by treatment with 2-sulfonyl benzoic acid in boiling acetic acid. Cyclocondensation of 2 with thioglycolic acid in boiling acetic acid furnishes isoxazolyl thiazolidinones 6a-f in excellent yields. The newly synthesized compounds 2-6 have been characterized by IR, 1H NMR and mass spectral studies.
Page(s): 721-728
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0983(Online); 0376-4699(Print)
Source:IJC-B Vol.50B(05) [May 2011]

Files in This Item:

File Description SizeFormat
IJCB 50B(5) 721-728.pdf103.13 kBAdobe PDFView/Open
 Current Page Visits: 827 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 135840 since 01-Sep-2015  Last updated on 27-May-2016Webmaster: