作者:Luu Van Boi、I. Korzha、N. Barba
DOI:10.1007/bf02496259
日期:1999.4
The reaction of 3-amino-4-methylbenzoic acid with tetramethylthiuram disulfide in DMF afforded 3-N,N-dimethylthioureido-4-methylbenzoic acid. Thermolysis or treatment of the latter with acidic reagents resulted in elimination of dimethylamine to form 3-isothiocyanato-4-methylbenzoic acid whose reaction with hydrazine yielded substituted thiosemicarbazide. The reactions of the latter with aldehydes
3-氨基-4-甲基苯甲酸与二硫化四甲基秋兰姆在DMF中反应得到3-N,N-二甲基硫脲基-4-甲基苯甲酸。后者用酸性试剂热解或处理导致消除二甲胺以形成 3-异硫氰酸根合-4-甲基苯甲酸,其与肼反应产生取代的氨基硫脲。后者与醛类和酮类反应生成硫缩草酮,其与四甲基秋兰姆二硫化物反应生成 3-(2-巯基-1,3,4-噻二唑-5-基氨基)-4-甲基苯甲酸。