作者:S. Scheibye、A.A. El-Barbary、S.-O. Lawesson、H. Fritz、G. Rihs
DOI:10.1016/0040-4020(82)80088-4
日期:1982.1
this is deoxygenated to the sulfide by LR at room tmeperature. 1-Phthalazinone-4-thione, 1,4-phthalazine-dithione and ethyl aminothioxoacetate have also been prepared from the corresponding carbonyl compounds. Alkylation or acylation of 2a–d yielded 3H-pyrazole-3-thione derivatives 8 and 9. Alkylation of 1 with MeI in the presence of Et3N at room temp. yielded the C-alkylated products 10 exclusively. X-RAy
4-取代-1,2-二苯基-3,5-吡唑烷二酮(与苯基丁a类似)1a–d与2,4-双-(4-甲氧基苯基)-1,3,2,4-二硫代二膦环烷2,4-二氢呋喃酮反应(Lawesson试剂(LR)形成相应的3,3'-二硫代双(1,2-二氢-3 H-吡唑-5-硫酮)2a-d。当4-取代基包含亚砜基时,这是在室温下通过LR脱氧成硫化物。1-Phthalazinone-4-thione,1,4-phthalazine-dithione和ethylaminothioxoacetate也由相应的羰基化合物制备,2a-d的烷基化或酰化生成3H-吡唑3-硫酮衍生物8和9。在Et存在下1与MeI烷基化3在室温下ñ。仅产生C-烷基化产物10。提出了2b和9a的X-RAy晶体学研究。