A 2-iridathiophene from reaction between IrCl(CS)(PPh3)2 and Hg(CHCHPh)2
作者:Guo-Liang Lu、Warren R. Roper、L. James Wright、George R. Clark
DOI:10.1016/j.jorganchem.2004.10.050
日期:2005.2
thiocarbonyl analogue of Vaska’s compound is produced in high yield by first treating IrCl(CO)(PPh3)2 with CS2 and methyl triflate to give [Ir(κ2-C[S]SMe)Cl(CO)(PPh3)2]CF3SO3 (1), secondly, reacting 1 with NaBH4 to give IrHCl(C[S]SMe)(CO)(PPh3)2 (2), and finally heating 2 to induce elimination of both MeSH and CO to produce IrCl(CS)(PPh3)2 (3). When IrCl(CS)(PPh3)2 is treated with Hg(CHCHPh)2 the novel
A 2-iridafuran from reaction between a 1-iridaindene and methyl propiolate
作者:Anja Bierstedt、George R. Clark、Warren R. Roper、L. James Wright
DOI:10.1016/j.jorganchem.2006.05.035
日期:2006.9
corresponding iodide, Ir[C8H5(Ph-3)]I(PPh3)2 (1) by reaction with NaI. When Ir[C8H5(Ph-3)]I(PPh3)2 (1) is treated with methylpropiolate a reactive five-coordinate complex with both a diphenylvinyl ligand from ring-opening of the 1-iridaindene, and a 3-methoxy-3-oxoprop-1-ynyl ligand from deprotonation of methylpropiolate, is first produced. Reaction of this complex with aqueous HCl generates the 2-iridafuran
配位不饱和的1-iridaindene Ir [C 8 H 5(Ph-3)] Cl(PPh 3)2具有不稳定的氯化物配体,易于转化为相应的碘化物Ir [C 8 H 5(Ph-3)通过与NaI反应生成] I(PPh 3)2(1)。当Ir [C 8 H 5(Ph-3)] I(PPh 3)2(1)先用丙炔酸甲酯处理一种反应性五配位配合物,该化合物既具有来自1-iridaindene开环的二苯基乙烯基配体,又具有来自丙炔酸甲酯去质子化的3-甲氧基-3-氧代丙-1-炔基配体。 。该络合物与HCl水溶液反应生成2-iridafuran,Ir [OC 3 H(CHCPh 2 -3)(OMe-5)] ClI(PPh 3)2(2),可能是由于在该化合物的β-碳原子上的初始质子化所致。 3-甲氧基-3-氧代丙-1-炔基配体形成亚乙烯基配体,随后二苯基乙烯基配体迁移到该配体的α-碳上,同时氧配位到铱。1的相似处
α-Alkenylation of β-dicarbonyl compounds with ‘alk-1-enyl-lead triaetates’
作者:Mark G. Moloney、John T. Pinhey
DOI:10.1039/c39840000965
日期:——
chloroform solution fo a dialk-1-enylmercury or an alk-1-enyltributylstannane results in rapid formation of a relatively unstable species, believed to be an alk-1-enyl-lead triacetat, which can be used for the α-alkenylation of β-dicarbonylcompounds.