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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Studies on Benzo[b]thiophen derivatives. Synthesis and reactions of 2-p-substituted Benzoylbenzo[b]thiophen-3(2H)ones

SB Awad and NF Abdul-Malik

Australian Journal of Chemistry 28(3) 601 - 605
Published: 1975

Abstract

2-p-Substituted benzoylbenzo[b]thiophen-3(2H)-ones were synthesized by cyclization of the corresponding p-substituted 2-(phenacylthio)benzoic acids with different reagents. The behaviour of these diketones toward the action of phenylhydrazine, arylmagnesium bromide and sodium borohydride was investigated. They gave the corresponding monophenylhydrazone derivatives which cyclized to give 1-phenyl-3-aryl- 1H-[1]benzothieno[3,2-c]pyrazoles; 2-bisarylmethylenebenzo[b]-thiophen- 3(2H)-ones; and 2-arylmethylenebenzo[b]thiophen-3(2H)-ones respectively. The structure of the above reaction products was confirmed by synthesis through other routes.

https://doi.org/10.1071/CH9750601

© CSIRO 1975

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