A new mixed-valent Rh2II,III dimer, [Rh2(espn)2Cl] (espn2â = α,α,αâ²,αâ²-tetramethyl-1,3-benzenedipropanamidate), is reported. This compound readily dissociates Clâ at low concentrations in solution to form the active [Rh2(espn)2]+ catalyst, which performs intramolecular CâH amination with TONs > 1400. This work expands the scope of Rh2II,III dimers to nitrenoid chemistry.
报道了一种新的混价Rh2II,III二聚体[Rh2(espn)2Cl](espn2- = α,α,α′,α′-四
甲基-1,3-
苯二
丙酸酰胺)。该化合物在溶液中以低浓度易于解离Cl-,形成活性[Rh2(espn)2]+
催化剂,该
催化剂进行的分子内C–H
氨基化反应的TON超过1400。这项工作将Rh2II,III二聚体的研究范围扩展到亚硝基
化学。