【摘要】 以咪唑型离子液体1-乙基-3-甲基咪唑四氟硼酸盐（[EMIM]BF₄）、1-丁基-3-甲基咪唑四氟硼酸盐（[BMIM]BF₄）、1-丁基-3-甲基咪唑双三氟甲磺酰亚胺盐（[BMIM]Tf₂N）与甲苯为溶剂,将膦配体Ⅰ～Ⅴ应用于手性泛内酯的不对称加氢过程中,配体Ⅲ在[EMIM]BF₄/苯两相体系下获得了相对较高催化活性和对映选择性。该手性催化剂循环5次仍能保持较高的催化活性和对映选择性。更多还原

【Abstract】 With imidazolium ionic liquid 1-ethyl-3-methyimidazolium tetrafluoroborate（[EMIM]BF₄）,1-butyl-3-methylimidazolium tetrafluoroborate（[BMIM]BF₄）,1-butyl-3-methylimidazolium bis[（trifluoromethyl）sulfonyl]imide（[BMIM]Tf₂N） and toluene as solvents,ligand I～V was applied to asymmetric hydrogenation of chiral pantolactone.Ligand Ⅲ was proved to achieve relatively high catalytic activity and enantioselectivity in the [EMIM] BF₄/benzene two-phase system.The high catalytic activity and enantioselectivity of the chiral catalyst could be maintained after 5 cycles.更多还原