- Synthesis and conformation of some 2- and 4-heterocyclyltetrahydroindazoles
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Condensation of 2-hydrazinobenzothiazoles with 2-hydroxymethylenecyclohexanone (1) results in the formation of two isomeric products, namely, 2-(4', 5', 6', 7'-tetrahydro-1H-indazol-1-yl)benzothiazoles and 2-(4', 5', 6', 7'-tetrahydro-2H-indazol-2-yl)benzothiazoles. 2-Hydrazinothiazoles and 2-hydrazinoquinolines react in a similar fashion. 4-Hydrazinoquinolines, however, afford on reaction with 1, a single isomer, 4-(4', 5', 6', 7'-tetrahydro-1-H-indazol-1-yl)quinoline in each case.The structural assignment and conformation of these molecules are based on NMR (both 1H and 13C) studies.
- Singh, S P,Kumar, Devinder,Diwakar, P,Moriarty, Robert M
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p. 306 - 312
(2007/10/02)
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