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Expedient and Green Synthesis of Some Novel 4-Thiazolidinones and New 2,4-Disubstituted Thiazoles with Tetrahydro Carbazole Pendant

机译:新型4-噻唑烷酮和新型2,4-二取代噻唑与四氢咔唑侧链的合成方法

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摘要

A green and efficient synthesis of novel 4-thiazolidinones 4 from cyclocondensation reaction of 2-(2,3-dihydro-1H-carbazol-4(9H)-ylidene)hydrazinecarbothioamide 3 and a-haloacids catalyzed by N-methylpyridinium tosylate in quantitative yield is reported. Also, synthesis of new 2,4-disubstituted thiazoles 5 under grinding conditions is reported.
机译:N-甲基吡啶甲酸甲苯酯催化2-(2,3-二氢-1H-咔唑-4(9H)-亚烷基)肼基甲硫代酰胺3与α-卤代酸的环缩合反应,绿色高效合成新型4-噻唑烷酮4被报道。另外,据报道在研磨条件下合成了新的2,4-二取代的噻唑5。

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