作者:Łukasz Groś、Aneta Wesołowska、Sławomir Westerlich、Tadeusz Jagodziński
DOI:10.1002/jhet.5570440126
日期:2007.1
The reaction of isothiocyanates with in situ generated carbanions of α,β-unsaturated ketones yielded α,β-unsaturated keto thioamides which in the reaction with acids or bases cyclized to give 2,6-disubstituted thiopyran-4-ones and in the reaction with α-bromoesters gave thiazolidin-4-one derivatives. The thiopyran-4-ones reacted with α,β-unsaturated aldehydes to yield tetrahydrothiopyran[2,3-b]pyridin-4-ones
异硫氰酸酯与原位生成的α,β-不饱和酮的碳负离子反应生成α,β-不饱和的酮硫代酰胺,在与酸或碱反应时会环化生成2,6-二取代的thiopyran-4-ones,并与α-溴酸酯产生噻唑烷丁-4-酮衍生物。硫吡喃-4-酮与α,β-不饱和醛反应生成四氢硫吡喃[2,3 - b ]吡啶-4-酮,而硫代苯胺与异硫氰酸苯酯反应生成。