(Perhalogenmethylthio)heterocyclen XXV [1] : Synthese von N-substituierten 2,3,4,5-Tetrakis(trifluormethylthio)pyrrolen
作者:Alois Haas、Christiane Klare
DOI:10.1016/s0022-1139(00)82755-4
日期:1989.2
1-Chloro-2,3,4,5-tetrakis(trifluoromethylthio)pyrrole (1b) is a good starting material for the preparation of other N-substituted derivatives of this type. Treatment with NaNH2 or hydrazine provides facile routes to the corresponding amino- (1c) and hydrazino- (2a) compounds. The latter forms with CF3SO2NCO the expected urea derivative (2c). Hydrolysis of 1c leads to 1-hydroxytetrakis(trifluoromethylthio)pyrrole
1-氯-2,3,4,5-四(三氟甲硫基)吡咯(1b)是制备此类其他N-取代衍生物的良好起始原料。用NaNH 2或肼处理提供了通往相应氨基(1c)和肼基(2a)化合物的简便途径。后者与CF 3 SO 2 NCO形成预期的尿素衍生物(2c)。1c水解会生成1-羟基四(三氟甲硫基)吡咯(2d)。将HC(O)H插入四(三氟甲硫基)吡咯(1a)的NH键中,制得与CF 3 SO 2 NCO,C 6 H 5 NCO,2-Cl-C 6 H形成的类似取代的甲醇(2b)4 SO2 NCO和C 6 H 5 CONCS期望的导数2c-h。用(CH 3)3 SiCl和2b形成甲硅烷基醚2i。