The Insertion of Terminal Phosphinidene Complexes into the BH Bond of Amine and Phosphine Boranes
作者:Rongqiang Tian、François Mathey
DOI:10.1002/chem.201202277
日期:2012.9.3
Push–pull complexation: Transient terminal phosphinidene complexes [RPW(CO)5] insert at 110 °C into the BH bonds of LBH3 (L = Et3N, Ph3P; see scheme). The reaction is probably driven by an interaction between the nucleophilic boron and the electrophilic phosphorus.
Reaction of Terminal Phosphinidene Complexes with Dihydrogen
作者:Matthew P. Duffy、Liow Yu Ting、Leo Nicholls、Yongxin Li、Rakesh Ganguly、François Mathey
DOI:10.1021/om2009974
日期:2012.4.9
The reaction of H2 with [RP-W(CO)5] (R = Ph, Me) above 120 °C leads, first, to the secondary diphosphine complex (RPH-PHR)(W(CO)5)2 and then to the primary phosphine complex (RPH2)(W(CO)5). On the basis of DFT calculations, the mechanism most likely involves the addition of H2 to the P–W bond, followed by the formation of the radical [RPH-W(CO)5]• by homolysis of the W–H bond. In the case of [PhNHP-W(CO)5]
Insertion of phosphinidene complexes into the P–H bond of secondary phosphine oxides: a new version of the phospha-Wittig synthesis of PC double bonds
Terminalphosphinidenecomplexes [RP-W(CO)5], as generated at 60 °C in the presence of copper chloride from the appropriate 7-phosphanorbornadiene complexes, react with secondary phosphine oxides Ar2P(O)H to give the insertion products into the P–H bonds. After metalation with NaH, these products react with aldehydes to give the corresponding phosphaalkenes which are trapped by dimethylbutadiene.
Circumambulatory Rearrangement with Characteristics of a 2:1 Covalent Molecular Bevel Gear
作者:Rosa E. Bulo、Florian Allaart、Andreas W. Ehlers、Franciscus J. J. de Kanter、Marius Schakel、Martin Lutz、Anthony L. Spek、Koop Lammertsma
DOI:10.1021/ja0627895
日期:2006.9.1
anti-W(CO)(5)-complexed 9-methyl-9-phosphabicyclo[6.1.0]nonatriene represents a covalently interlocked molecular bevel gear. Correlated movement of the phosphorus atom and the eight-membered ring by way of a "walk" rearrangement makes gear slippage impossible. The gearing motion is transferred to the four-toothed W(CO)(5) propeller connected to the rotating phosphorus atom, enabling a gearing ratio
Direct Access to <i>cis</i>-1,2-Dihydro-1,2-diphosphetes from Butadiynes and Terminal Phosphinidene Complexes
作者:Ngoc Hoa Tran Huy、Louis Ricard、François Mathey
DOI:10.1021/om970487t
日期:1997.9.1
Transient terminal phosphinidenecomplexes [RP→W(CO)5] (R = Ph, Me, Bz, allyl), as generated from the corresponding 7-phosphanorbornadiene complexes, react with substituted butadiynes to afford the corresponding 3-alkynyl-1,2-dihydro-1,2-diphosphete complexes by insertion of a second phosphinidene unit into the alkynyl-substituted P-C ring bond of the initially formed phosphirene complexes. According