NISCAIR Online Periodicals Repository Collection: IJC-B Vol.48B(05) [May 2009]

Microwave assisted rapid and efficient synthesis of new 3-ethoxy-4,6-diaryl-4,5-dihydro-2,1-benzisoxazoles

Tue, 28 Apr 2009 22:58:59 GMT

Title: Microwave assisted rapid and efficient synthesis of new 3-ethoxy-4,6-diaryl-4,5-dihydro-2,1-benzisoxazoles

Authors: Rajanarendar, E; Rao, E Kalyan; Raju, S

Abstract: A simple, extremely fast and efficient synthesis of new 3-ethoxy-4,6-diaryl-4,5-dihydro2,1-benzisoxazoles has been achieved under microwave irradiation.

Page(s): 749-753

An environmentally benign indium (III) chloride catalysed one-pot synthesis of quinolines

Tue, 28 Apr 2009 22:58:59 GMT

Title: An environmentally benign indium (III) chloride catalysed one-pot synthesis of quinolines

Authors: Kidwai, Mazaahir; Bansal, Vikas; Mishra, Neeraj Kumar; Bhatnagar, Divya

Abstract: A convenient eco-friendly procedure for the quantitative synthesis of novel quinoline derivatives has been developed by a simple one-pot reaction of substituted anilines with β-ketoesters at 60°C in ethanol using recyclable indium chloride as catalyst. The reaction proceeds smoothly under solvent free conditions with quantitative yields.

Page(s): 746-748

Synthesis of impurity A in Carvedilol: a β-adrenergic receptor

Tue, 28 Apr 2009 22:58:59 GMT

Title: Synthesis of impurity A in Carvedilol: a β-adrenergic receptor

Authors: Madhusudhan, G; Naidu, K Chinnam; Kumar, B Anand; Satyanarayana, R; Balraju, V

Abstract: Carvedilol is prepared by different synthetic approaches. Almost in all the approaches the major impurities that are known in the literature A, B, C, D and E are listed in European pharmacopoeia. The control of pharmaceutical impurities is currently a critical issue to the pharmaceutical industry. In this publication, a description of these impurities and their origins in Carvedilol process are presented along with the preparation of impurity A.

Page(s): 741-745

Synthesis, X-ray diffraction and optical spectral study of benzo-18-crown-6 containing monoazo dyes

Tue, 28 Apr 2009 22:58:59 GMT

Title: Synthesis, X-ray diffraction and optical spectral study of benzo-18-crown-6 containing monoazo dyes

Authors: Deshmukh, M B; Alasundkar, K N; Salunkhe, S M; Salunkhe, D K; Sankpal, S A; Patil, D R; Anbhule, P V

Abstract: The 4'-nitrobenzo-18-crown-6, 2 have been reduced by the Fe/HCl to give 4'-aminobenzo-18-crown-6, 3. This is diazotized and coupled with different phenols to give the corresponding azo-dyes. X-ray diffraction as well as UV-Vis study of 4' (β naphthol azo benzo)18-crown-6, 4a dye have been reported.

Page(s): 737-740