作者:Oliver Briel、Armin Fehn、Wolfgang Beck
DOI:10.1016/s0022-328x(98)01129-2
日期:1999.4
Condensation of carotinoid polyene dialdehydes, 1,1'-ferrocene dialdehydes and of 9-ferrocenyl-2,7-dimethylnonatetraenal with the Fischer carbene complexes (OC)(5)W=C(NMe2)CH2SiMe3 or (OC)(5)M=C(Me)(OMe) (M=Cr, W) in the presence of n-BuLi or SiMe3Cl/NEt3 yields the bis(carbene) complexes 1-4 and the donor acceptor substituted complexes 5, 6. The star-shaped trinuclear molecules 7 and 8 were obtained under Wittig conditions from 1,3,5-tris[(triphenylphosphonio)methyl]benzene tribromide and ferrocene aldehyde or 9-ferrocenyl-2,7-dimethyl-nonatetraenal. (C) 1999 Elsevier Science S.A. All rights reserved.