摘要:
Ni(cod)(PMe3)2 and the o-, m-, and p-bromobenzyl bromides react, under appropriate conditions, to afford the binuclear complexes Ni2(mu(2)-eta(3),eta(1)-CH2C6H4)Br2(PMe3)3 (1a-c) or Ni2(mu(2)-eta(1),eta(1)-CH2C6H4)Br2(PMe3)4 (2b,c). The reaction of the ortho eta(3)-benzylic derivative 1a with isocyanides, CNR, has been investigated, and three different isomeric species have been identified for R = Bu(t). The CNC6H3-2,6-Me2 insertion product, 4, reacts with CO to form a Ni(II)-vinyl complex 7 derived from the N-aryl-1-isoquinolone 8, which can be freed by hydrolytic cleavage of the Ni-vinyl bond.