MICROWAVE ASSISTED SYNTHESIS AND SPECTRAL STUDIES OF 2- THIOPHEN-2-YLMETHYLENE-2,3,4,9-TETRAHYDRO-CARBAZOL-1-ONE, 3-THIOPHEN-2-YL-4,5-DIHYDRO-10H-2-OXA-1,10-DIAZA- CYCLOPENTA[a]CARBAZOLE AND 3-THIOPHEN-2-YL-2,4,5,10-TETRAHYDRO- 1,2,10-TRIAZA-CYCLOPENTA[a]CARBAZOLE DERIVATIVES
نویسندگان
چکیده
Microwave assisted new aldol condensation reaction of 1-oxo-1,2,3,4tetrahydrocarbazoles 1 with thiophene-2-carbaldehyde 2 in the presence of alcoholic KOH affords a single product 2-Thiophen-2-ylmethylene-2,3,4,9-tetrahydro-carbazol-1-one 3. 3 on irradiation with hydroxylamine hydrochloride yielded 3-Thiophen-2-yl-4,5-dihydro-10H-2-oxa-1,10-diazacyclopenta[a]carbazole 4 and 3 on irradiation with hydrazine hydrate in ethanol medium to yielded 3-Thiophen-2-yl-2,4,5,10-tetrahydro-1,2,10-triaza-cyclopenta[a]carbazole 5. The structures of the synthesized compounds were confirmed on the basis of physical and spectral analysis (FT-IR, H, C-NMR) and Mass spectral data.
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