摘要:
亚氨基正膦R3P = NCH2Aryl(R = Ph,Aryl = Ph(1a),C6H(4)-2-Br(1b),C6H4-Me-2(1e),C6H3-(Me)(2) )-2,5(1f); R =对甲苯基,芳基= Ph(1c); R =间甲苯基,芳基= Ph(1d); R3P = MePh2P,和Aryl = Ph(1g)) 。1a与Pd(OAc)2(OAc =乙酸酯)反应生成内-[Pd(micro-Cl){C,N-C6H4(PPh2 = NCH2Ph)-2}] 2(3a),而exo- [Pd(micro -Br){C,N-C6H4(CH2N = PPh3)-2}] 2(3b)只能通过将1b氧化添加到Pd2(dba)3中来获得。金属化配体的内在形式在动力学和热力学上都是有利的,如exo- [Pd(micro-OAc){C,N-C6H4(CH2N = PPh3)-2}] 2(2b)转化为内-