Catalysed and uncatalysed substitution reactions of [W(CO)5(NCR)] (R = Me, Et)
作者:Cheryl-Ann Dickson、Anne W. McFarlane、Neil J. Coville
DOI:10.1016/s0020-1693(00)80834-8
日期:1989.4
Abstract The reaction between [W(CO)5(NCR)] (R = Me, Et) and tBuNC in the presence of PdO yielded both [W(CO)4(CNBut)2] and [W(CO)4(NCR)(CNBut)] and revealed that both RCN and CO are catalytically replaced by tBuNC. Reaction of a 2:1 mixture of [W(CO)5(NCMe)] and PPh2(CH2)nPPh2 (P-P; n = 2, 5) in toluene at 55 °C gave a product mixture consisting of the bridged complex [W(CO)5(P-P)W(CO)5] (dominant product)
摘要[W(CO)5(NCR)](R = Me,Et)与tBuNC在PdO存在下的反应产生了[W(CO)4(CNBut)2]和[W(CO)4(NCR) )(CNBut)],并发现RCN和CO均被tBuNC催化取代。[W(CO)5(NCMe)]与PPh2(CH2)nPPh2(PP; n = 2,5)的2:1混合物在甲苯中于55°C反应,得到由桥联配合物[W]组成的产物混合物(CO)5(PP)W(CO)5](主要产物)和螯合物[W(CO)4(PP)]。出乎意料的是,当与PPh2( )nPPh2(n = 4,5)的反应在CHCl3中进行时,螯合物[W(CO)4(PP)]是主要产物。
Rapid synthesis of Group VI carbonyl complexes by coupling borohydride catalysis and microwave heating
作者:Kurt R. Birdwhistell、Brian E. Schulz、Paula M. Dizon
DOI:10.1016/j.inoche.2012.09.030
日期:2012.12
tetracarbonyl phosphine and tertiary amine complexes [M(CO)4 L2, M = Cr, Mo, W, L2 = 2PPh3, dppm, dppe, dppp, dppb, bpy, phen, dppf] were synthesized in minutes in the microwave at moderate temperature, atmospheric pressure, and utilizing NaBH4 as a catalyst. The reactions were optimized by careful solvent selection. The octahedral complexes were isolated in percent yields ranging from 17 to 95. The
摘要 在几分钟内合成了几种 VI 族四羰基膦和叔胺配合物 [M(CO)4 L2, M = Cr, Mo, W, L2 = 2PPh3, dppm, dppe, dppp, dppb, bpy, phen, dppf]在中等温度、大气压下进行微波,并利用 NaBH4 作为催化剂。通过仔细选择溶剂来优化反应。八面体配合物以 17 到 95% 的产率被分离出来。与传统的热合成相比,更低的温度、更短的反应时间、温和的溶剂和更低的压力为这些常见的 VI 族配合物提供了一种快速、环保的合成途径.
Lindner, Ekkehard; Fawzi, Riad; Mayer, Hermann August, Organometallics, 1992, vol. 11, # 3, p. 1033 - 1043
作者:Lindner, Ekkehard、Fawzi, Riad、Mayer, Hermann August、Eichele, Klaus、Hiller, Wolfgang