Synthesis and Catalytic Property of Iron Pincer Complexes Generated by Csp3–H Activation
摘要:
When the diphosphinito PCP ligand (Ph2P-(C6H4))(2)CH2 (1) was treated with Fe(PMe3)(4) and Fe-Me-2(PMe3)(4), the C-sp(3)-H activation products [(Ph2P-(C6H4))(2)CH)Fe(H)(PMe3)(2) (2) and [(Ph2P(C6H4))(PhP-(C6H4)(2))CH]Fe(PMe3)(2) (3) were obtained at room temperature. The generation of product 3 underwent one C-sp(3)-H and one C-sp(2)-H bond activation process. The new iron hydride complex 2 showed good activity in the catalytic hydrosilylation of aldehydes and ketones by using (EtO)(3)SiH as the hydrogen source under mild conditions. Complexes 2 and 3 were characterized by spectroscopic methods and X-ray diffraction analysis.
Synthesis and Catalytic Property of Iron Pincer Complexes Generated by Csp3–H Activation
摘要:
When the diphosphinito PCP ligand (Ph2P-(C6H4))(2)CH2 (1) was treated with Fe(PMe3)(4) and Fe-Me-2(PMe3)(4), the C-sp(3)-H activation products [(Ph2P-(C6H4))(2)CH)Fe(H)(PMe3)(2) (2) and [(Ph2P(C6H4))(PhP-(C6H4)(2))CH]Fe(PMe3)(2) (3) were obtained at room temperature. The generation of product 3 underwent one C-sp(3)-H and one C-sp(2)-H bond activation process. The new iron hydride complex 2 showed good activity in the catalytic hydrosilylation of aldehydes and ketones by using (EtO)(3)SiH as the hydrogen source under mild conditions. Complexes 2 and 3 were characterized by spectroscopic methods and X-ray diffraction analysis.