Hydrodesulfurization of Thiophene and Benzothiophene to Butane and Ethylbenzene by a Homogeneous Iridium Complex
摘要:
Reaction of the dimer [Cp*IrHCl](2) (Cp* = eta(5)-C5Me5) in benzene solution with either thiophene or benzothiophene at 90 degrees C in the presence of H-2 gives the hydrogenolysis products [Cp*IrCl](2)(mu-H)(mu-SC4H9) (1) and [Cp*IrCl](2)(mu-H)[mu-S(C-6-H-4)CH2CH3] (2), respectively, in high yields. Upon further thermolysis under H-2, the completely desulfurized products, butane and ethylbenzene, can be made. Complexes 1 and 2 were characterized by single-crystal X-ray diffraction. In the absence of H-2, reaction of [Cp*Ir HCl](2) with thiophene gives an additional trinuclear product [Cp*IrCl](3)(H)(SC4H6) (3), which was also structurally characterized.
Hydrodesulfurization of Thiophene and Benzothiophene to Butane and Ethylbenzene by a Homogeneous Iridium Complex
摘要:
Reaction of the dimer [Cp*IrHCl](2) (Cp* = eta(5)-C5Me5) in benzene solution with either thiophene or benzothiophene at 90 degrees C in the presence of H-2 gives the hydrogenolysis products [Cp*IrCl](2)(mu-H)(mu-SC4H9) (1) and [Cp*IrCl](2)(mu-H)[mu-S(C-6-H-4)CH2CH3] (2), respectively, in high yields. Upon further thermolysis under H-2, the completely desulfurized products, butane and ethylbenzene, can be made. Complexes 1 and 2 were characterized by single-crystal X-ray diffraction. In the absence of H-2, reaction of [Cp*Ir HCl](2) with thiophene gives an additional trinuclear product [Cp*IrCl](3)(H)(SC4H6) (3), which was also structurally characterized.