کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1340228 | 979725 | 2007 | 7 صفحه PDF | دانلود رایگان |
A one pot reaction of [M(CO)4L2] (M = Mo, L2 = 2,2′-bipyridine, 1,10-phenanthroline; M = W, L2 = 2,9-dimethyl-1,10-phenanthroline) with 1,4-dichloro-2-butyne and Ph4PCl was examined in chlorinated solvents over the range 40–129 °C. Production of either [MCl(CO)2(η3-CH2C(COCl)CCH2)L2] (4) or [MCl2(CO)(η2-ClCH2CCCH2Cl)L2] was found to be dependent upon the solvent temperature, and these reactions were found to be insensitive to the presence of water. Under controlled conditions, one pot reactions carried out in the presence of alcohols, amines or thiols gave related ester, amide or thioester substituted η3-butadienyl complexes in good yield. The structure of the propargyl amide complex was confirmed by X-ray analysis.
Complexes of the type [MCl(CO)2(η3-CH2C(COX)CCH2)L2] (M = Mo, W; L2 = 2,2′-bipy, 1,10-phen, 2,9-dimethyl-1,10-phen; X = Cl, NHR, NR2, OR, SR) were obtained from one pot reactions of [M(CO)4L2], 1,4-dichloro-2-butyne and Ph4PCl in chlorinated solvents below 60 °C (Mo) or above 81 °C (W). Destabilization of X = Cl occurred at elevated temperatures to give the alternative product [MCl2(CO)(η2-ClCH2CCCH2Cl)L2].Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 26, Issue 6, 11 April 2007, Pages 1285–1291