CSi bond cleavage of trihalomethyltrimethylsilane by alkoxo- and aryloxogold or -copper complexes
摘要:
The C-Si bond cleavage of trihalomethyltrimethylsilane Me3SiCX3 (X= F, Cl) proceeds smoothly by alkoxo- and aryloxogold(I or III) or -copper(I) complexes Au(OR)L (OR = OCH(CF3)(2), OPh), L = PCy3, PPh3, PMe2Ph, PMe3), cis-AuMe2(OPh)L (L = PMePh2, PEt3, PMe2Ph, PMe3), Cu(OR)(PPh3)(3) (OR = OCH(CF3)(2), OPh) to give trihalomethylgold or -copper complexes Au(CX3)L, cis-AuMe2(CF3)L, or Cu(CF3)L-3 with liberation of the corresponding silyl ether Me3SiOR. (C) 2000 Elsevier Science B.V. All rights reserved.
Reactions of trifluoromethyl iodide with methylgold(I) complexes. Preparation of trifluoromethyl-gold(I) and -gold(III) complexes
作者:Antony Johnson、Richard J. Puddephatt
DOI:10.1039/dt9760001360
日期:——
Trifluoromethyliodide reacts with [AuMeL] to give [AuMe2(CF3)L] and [AuIL](L = PMe3 or PMe2Ph), or [Au(CF3)L] and Mel (L = PPh3), or a mixture of these products (L = PMePh2). In some cases reaction of [AuMe(PMe3)] with CF3I gives [AuMe(CF3)I(PMe3)]. Evidence is presented that the reactions proceed, at least in part, by a free-radical chain mechanism.