摘要:
Alkynylgold(I) complexes incorporating a chiral binaphthyl group have been prepared. Bis(alkyne) reagents [rac-1,1'-C20H12-2,2'-(OCH2C CH)(2)] (1) and [rac-1,1'-C20H12-2,2'-(OC(O)CH2C CH)(2)](2), react with [AuCl(SMe2)] and base to give insoluble oligomeric alkynylgold(I) complexes [rac-1,1'-C20OH12-2,2'-(OCH2C CAu)(2)](n) (3) and [rac-1,1'-C20H12-2,2'-(OC(O)CH2C CAu)(2)](n) (4), which react with phosphine or diphosphine ligands to give soluble complexes [rac-1,1'-C20H12-2,2'-(OCH2C CAuPR3)(2)] (5), R = Ph or Cy, [rac-1,1'-C20H12-2,2'-(OCH2C CAu)(2)(Ph2P(CH2)(n)PPh2) (6), or [rac-1,1'-C20H12-2,2-(OC(O)CH2C-CAu)(2)(Ph2P(CH2)(n)PPh2)] (7), with n = 3-5. Several of the complexes 6 and 7 are shown to exist as mixtures of isomeric forms in solution. (c) 2005 Elsevier B.V. All rights reserved.