Reaction of Ruthenium Complexes Having both a Phosphite and a Group 14 Element Ligand with a Lewis Acid

摘要: Reactions of having an alkyl group (ER3 = Me (1a), CH2SiMe3 (2a)), a silyl SiMe3 (3a), SiMe2SiMe3 (4a)), germyl GeMe3 (5a)), or stannyl SnMe3 (6a), SnnBu3 (7a), SnPh3 (8a)) with Lewis acid (BF3·OEt2 Me3SiOSO2CF3 (TMSOTf)) have been examined. In the reactions BF3·OEt2, in any case except for 8a, OMe abstraction as anion uniformly takes place at first stage to give corresponding cationic phosphenium complex (1b−7b). The successive reaction depends on type ER3 group. Alkyl complexes (1b and 2b) immediately undergo migratory insertion ligand into Ru−C bond, subsequent PPh3 gives (1c), (2c)). Silyl (3b−5b) are stable Ru−Si Ru−Ge bonds intact. contrast, (6b 7b) migration one R groups Sn stannylene (R (6e), nBu (7e)). another acid...