Synthesis and Reactivity of<i>N</i>-Trifluoromethyl-<i>N</i>-nitrosotrifluoromethanesulfonamide as a New Type of Trifluoromethylating Agent
作者:Teruo Umemoto、Akira Ando
DOI:10.1246/bcsj.59.447
日期:1986.2
reaction of trifluoronitrosomethane with hydroxylamine followed by the treatment with trifluoromethanesulfonyl fluoride in the presence of a base. TNS-Tf was demonstrated to be an effective trifluoromethylating agent photochemically or thermally for aromatics, thiols, disulfides, and uridine derivatives. The insertion reaction by two trifluoromethyl groups of TNS-Tf to the sulfur-sulfur bonds was observed
N-三氟甲基-N-亚硝基三氟甲磺酰胺 (TNS-Tf) 通过三氟亚硝基甲烷与羟胺反应,然后在碱存在下用三氟甲磺酰氟处理合成,产率为 58%。TNS-Tf 被证明是一种有效的三氟甲基化剂,可用于芳烃、硫醇、二硫化物和尿苷衍生物的光化学或热学。在与具有吸电子基团的二硫化物反应中观察到TNS-Tf的两个三氟甲基与硫-硫键的插入反应,得到2mol的三氟甲硫基化合物。此外,TNS-Tf 还是一种良好的试剂,可以温和方便地原位生成三氟甲基铜络合物,该络合物以良好的收率将碘代芳烃转化为三氟甲基取代的芳烃。相似地,N-三氟甲基-N-nitrosononafluoro-1-butanesulfonamide (TNS-Nf) 的合成产率为 36%。反应性检查表明,这种类型的 N-亚硝基硫...