Herein we describe the pioneering Rh-catalyzed coupling reactions of a fluoroalkyl carbene with azides to access α-trifluoroethylated imines, where fluoroalkyl N-sulfonylhydrazones are used as fluoroalkyl diazo surrogates. Remarkably, using TMSN₃ as the N source, two C–N bond formation products were obtained. Furthermore, the α-trifluoroethylated imine products could be easily reduced to the corresponding N-trifluoroethylated anilines. Experimental results and theoretical calculations justify a stepwise reaction pathway involving the formation of rhodium carbene, the addition of HN₃, and C═N bond formation.

中文翻译：

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氟烷基 N-磺酰腙与叠氮化物生成 α-三氟乙基化亚胺的 Rh 催化偶联反应

在此，我们描述了氟代烷基卡宾与叠氮化物的开创性 Rh 催化偶联反应以获得 α-三氟乙基化亚胺，其中氟代烷基N-磺酰腙用作氟代烷基重氮替代物。值得注意的是，使用 TMSN ₃作为 N 源，获得了两种 C-N 键形成产物。此外，α-三氟乙基化亚胺产物可以很容易地还原成相应的N-三氟乙基化苯胺。实验结果和理论计算证明了涉及铑卡宾形成、HN ₃加成和C=N键形成的逐步反应途径。