62199-59-1Relevant academic research and scientific papers
Chromium catalysts for ethylene trimerization/tetramerization functionalized with ortho-fluorinated arylphosphine ligand
Lee, Hoseong,Joe, Yongnam,Park, Hyoseung
, p. 15 - 18 (2019/01/04)
A series of novel asymmetric bidentate phosphines with ortho?fluorine substituents was developed and characterized. In combination with chromium, the compound gave high activity to 1-hexene and 1-octene (approaching 3200 kg/g Cr/h) and high combined selec
Copper-catalyzed anti-hydrophosphination reaction of 1-alkynylphosphines with diphenylphosphine providing (Z)-1,2-diphosphino-1-alkenes
Kondoh, Azusa,Yorimitsu, Hideki,Oshima, Koichiro
, p. 4099 - 4104 (2007/10/03)
Hydrophosphination of 1-alkynylphosphines with diphenylphosphine proceeds in an anti fashion under copper catalysis, providing an easy and efficient access to a variety of (Z)-1,2-diphosphino-1-alkenes and their sulfides. The reaction is highly chemoselec
Phosphine-substituted and phosphido-bridged metal clusters in homogeneous catalysis I. Synthesis and reactivity of (η5-C5H5)NiM3(μ-H)3(CO)(9-n)Ln (M = Ru, Os, n = 1,2: L = PPh3, PPh2H, PCy3, PEt3) and M3(CO)(12-n)Ln (M = Ru, N = 1-3: L = PPh3,
Castiglioni, Mario,Giordano, Roberto,Sappa, Enrico
, p. 97 - 110 (2007/10/02)
The complexes (η5-C5H5)NiM3(μ-H)3(CO)(9-n)Ln (M = Ru, Os, n = 1.2: L = PPh3, PPh2H, PCy3, PEt3) and M3(CO)(12-n)Ln (M = Ru, n = 1-3: L = PPh3, PPh2H, PCy3, PEt3; M = Os, n = 1,2: L = PPh3) have been synthesized by new or known procedures.Reacti
Syntheses and Structures of Simple Mono- and Bis(phosphino)allenes
Schmidbaur, Hubert,Pollok, Thomas,Reber, Gabriele,Mueller, Gerhard
, p. 2015 - 2022 (2007/10/02)
Metalation of 1,1-dimethylallene with alkyllithium compounds and treatment of the resulting lithiated products with chlorodiphenylphosphane affords 3,3-dimethyl-1-(diphenylphosphino)allene and -1,1-bis(diphenylphosphino)allene (3 and 8, respectively).The success of the syntheses depends strongly on the reaction conditions.With a change in stoichiometry, temperature, or reaction times, isomeric alkynes (CH3)2CH-C*C-P(C6H5)2 and (C6H5)2P(CH3)2C-C*CH (6 and 7, respectively) are also obtained, and even substitution of phenyl for alkyl groups at the phosphorus atom may occur.Thus the reaction of the intermediate 6 with tert-butyllithium followed by treatment with (C6H5)2PCl leads to the allene (CH3)2C=C=C (12).Through the new preparative methods, mono- and (geminally) bis(phosphino)-substituted allenes have now become easily available in good yields.The prototypes 8 and 12 have been structurally characterized by X-ray diffraction analyses.The molecular conformations are very similar to those of analogous geminal di(phosphino)alkenes.
