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2‐Arylethenyl‐2′‐arylethynyl sulfones: A potential source for some spiroheterocycles |
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| Authors: | Dandu Bhaskar Reddy Nalla Reddy Chandrasekhar Babu Venkatapuram Padmavathi |
| Abstract: | The double Michael addition of dimethyl malonate to 2‐arylethenyl‐2′‐arylethynyl sulfones (3) resulted in 3,5‐diaryl‐5,6‐dihydro‐4,4‐dimethoxycarbonyl‐1‐thiin‐1,1‐dioxides (4) . The latter on cyclocondensation with urea / thiourea / hydrazine hydrate / hydroxylamine hydrochloride gave spiroheterocycles. |
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