Intramolecular B-H Bond Activation from a Dihydridobis(dimethylpyrazolyl)borate Ligand: Formation of a Rhodium(III) Carbene Hydride and a Rare Example of Reverse 详细信息    查看全文

• 作者：Jake S. Yeston and Robert G. Bergman
• 刊名：Organometallics
• 出版年：2000
• 出版时间：August 7, 2000
• 年：2000
• 卷：19
• 期：16
• 页码：2947 - 2949
• 全文大小：73K
• 年卷期：v.19,no.16(August 7, 2000)
• ISSN：1520-6041

文摘

The new complex Bp^Me₂Rh(CO)(pyridine) (1)has been prepared and reacts with CH₃I to yield thenovel Rh carbene hydride complex HB(Me₂pz)₂Rh(H)(I)(C₅H₅N)(C(O)Me) (3), resulting from formal additionof CH₃I across the Rh-C bond concomitant with hydridetransfer from B to Rh. Thermolysis of 3 induces migration of the Rh hydride to the -carbon to give HB(Me₂pz)₂Rh(I)(C₅H₅N)(CH(O)Me) (6), and a crossover studysupports intramolecular mechanisms for both hydridetransfer steps.