Transition metal complexes with the C1-symmetric diphosphines (R)-(R)-3-benzyl-2,4-bis(diphenylphosphino)pentane and (R)-(R)-3-benzyl(p-sulphonate)-2,4-bis(diphenylphosphino)pentane sodium salt. Applications to enantioselective catalysis in different phase systems
作者:Claudio Bianchini、Pierluigi Barbaro、Giancarlo Scapacci
DOI:10.1016/s0022-328x(00)00859-7
日期:2001.3
3-diphenyl-1-propene with dimethyl malonate. The aqueous-biphase hydrogenation of dimethyl itaconate has been accomplished with Rh(I) and Ir(I) complexes containing the monosulphonated derivative (R)-(R)-3-benzyl(p-sulphonate)-2,4-bis(diphenylphosphino)pentane [(R)-(R)-BDPBzPSO3−]. Irrespective of the phase variation system, the catalyst precursors generally feature good activity and good to modest enantioselectivity
所述Ç 1 -对称双膦([R )- (- [R)-3-苄基-2,4-双(二苯基膦基)戊烷[([R )- (- [R)-BDPBzP]已经采用,结合的Ru(II), Rh(I),Ir(I)和Pd(II)离子,在衣康酸二甲酯,2-乙酰氨基doc酸甲酯,2-甲基喹喔啉,丙酮酸甲酯和二氢-4,4-二甲基的氢化反应中发生的各种均相不对称反应中-2,3-呋喃二酮,苯乙烯的硼氢化,(rac)-(E的烯丙基烷基化)-3-乙酰氧基-1,3-二苯基-1-丙烯与丙二酸二甲酯。衣康酸二甲酯的水相双相加氢反应已通过Rh(I)和Ir(I)配合物完成,其中含有单磺酸化的衍生物(R)-(R)-3-苄基(对磺酸盐)-2,4-双(二苯基膦基) )戊烷[([R )- (- [R)-BDPBzPSO 3 - ]。不管相变系统如何,催化剂前体通常具有良好的活性和良好至中等的对映选择性。