Die Koordinationschemie CS-funktioneller Verbindungen
作者:Wolfdieter A. Schenk、Dagmar Kuemmerle、Christian Burschka
DOI:10.1016/0022-328x(88)80448-0
日期:1988.7
Compounds of the type [W(CO)3(diphosphine)(CS2)] add activated alkynes (MeO2CCCCO2Me, CF3CCCF3, HCCCO2Me) to give complexes of 1,3-di-thiole-2-ylidenes. The unstable intermediate [W(CO)3(PMe3)2(CS2)] can be trapped by a similar reaction. The cyclic dithiocarbenecomplexes thus formed undergo ring opening with Co2(CO)8 to give tetrahedral methylidyne dusters, one of which has been characterized by
Acceptorless and Base-free Dehydrogenation of Cyanohydrin with (η<sup>6</sup>
-Arene)halide(Bidentate Phosphine)ruthenium(II) Complex
作者:Kicheol Kim、Adhitya Mangala Putra Moeljadi、Hajime Hirao、Soon Hyeok Hong
DOI:10.1002/adsc.201700786
日期:2017.10.4
Ruthenium‐catalyzed dehydrogenation of cyanohydrins under acceptorless and base‐free conditions was demonstrated for the first time in the synthesis of acyl cyanide. As opposed to the thermodynamically preferred elimination of hydrogen cyanide, the dehydrogenation of cyanohydrins could be kinetically controlled with ruthenium (II) bidentate phosphine complexes. The effects of the arene, phosphine ligands
The preparation and properties of some diphosphines R2PCH2CH2PR2(R = alkyl or aryl) and of their rhenium(I) dinitrogen derivatives
作者:Joseph Chatt、Wasif Hussain、G. Jeffery Leigh、Hapipah Mohd. Ali、Christopher J. Picket、Douglas A. Rankin
DOI:10.1039/dt9850001131
日期:——
The synthesis of a range of diphosphines R2PCH2CH2PR2 from Cl2PCH2CH2PCl2 is described. The properties of a series of complexes [ReCl(N2)(R2PCH2CH2PR2)2] derived from them are discussed. The relationship between the values of E½ox and ν(N2) for the complexes suggests that electron-withdrawing substituents on the diphosphine upset the usual balance of σ and π effects in rhenium–dinitrogen bonding.
Synthesis of molybdenum-rhodium and molybdenum-iridium compounds linked by a heterodifunctional ligand and formation of molybdenum-iridium dihydrides by reaction with molecular hydrogen
作者:Charles P. Casey、R. Morris Bullock、Francois Nief
DOI:10.1021/ja00364a019
日期:1983.12
The preparation of a series of Rh(i)-Mo and Ir(I)-Mo compounds is reported. In addition, the formation of dihydrides from the oxidative addition of H/sub 2/ to the Ir(I) centers is discussed.
Provided is a method for the production of 1-menthol, which comprises hydrogenation of piperitenone with a transition metal complex of a specified optically active phosphine to produce pulegone, hydrogenation of the obtained pulegone with a ruthenium-phosphine-amine complex in the presence of base to obtain pulegol, and further hydrogenation of the pulegol with a transition metal catalyst.