Phosphine, tricyclohexyl

C18H18, Benzene, l,3-butadiene-l,4-diyl-bis-cobalt complex, 26 195 C,8H33P, Phosphine, tricyclohexyl iron complex, 26 61 nickel complexes, 26 205, 206 C H 7OP, Benzenemethanol, 2-(diphenyl-phosphino)-... 

Phosphine, seleno-metal complexes, 664 bidentate, 664 Phosphine, tributyl-, 992 Phosphine, trichloro-, 990 Phosphine, tricyclohexyl-, 992 Phosphine, triethyl-, 992 Phosphine, trifluoro-jt acidity, 1034 Phosphine, triisopropyl-, 992 Phosphine, trimethyl-, 990, 992 oxides... 

PC Hjj, Phosphine, tricyclohexyl-, iron complex, 26 261 molybdenum complex, 27 3, 13... 

PCijHjj, Phosphine, tricyclohexyl-, iron complexes, 26 61, 28 171, 176, 29 154 molybdenum complex, 27 3, 13 nickel complexes, 26 205, 206 palladium and platinum complexes, 28 114,116... 

Since Pd-phosphine complexes normally demonstrate an optimum phosphine Pd ratio, an attempt was made to determine the optimal tricyclohexyl phosphine Pd ratio at this stage. (See Table 2.) However, under these conditions, any rate optimum is barely detectable although there appeared to be selectivity optimum. Large amounts of phosphine were deleterious to both selectivity and rate. There was little change in the levels of reduction to pinacolone as the ratio was altered. 

Table 2. Optimization of Tricyclohexyl Phosphine Level in Screening Reactions...

Conditions 33.0 mL (0.251 mol) mL (0.766 mol) MeOH, 120°C, pressure as indicated, includes tricyclohexyl phosphine contained in the (cy-hex3P)2PdCl2 catalyst. 

ONNiPC22H4U, Nickel(II), [2-methylpro-panamidato(2 - )-C, /Y](tricyclohexyl-phosphine)-, 26 205... 

Figure 1.6 Metathesis Catalysts (22) Phenylmethylene-bis-(tricyclohexyl-phosphine) ruthenium dichloride (I), (IMesH2)(PCy3)(Cl)2Ru=CHPh (III)...

With regard to catalytic activity, a catalytic system comprising palladium(II) acetylacetonate or palladium(II) acetate, dimeth-ylanilinium tetrakis(pentafluorophenylborate), and tricyclohexyl-phosphine is more effective than a catalyst system comprising (allylPdCl)2, borate, and phosphine. It is believed that the acetylacetonate group is easily released from palladium to form a large space around the palladium, so a large norbornene monomer can access the site easily (9). 

PFeOC24H21, Ferrocene, [(diphenylphosphino) acetyl]-, [125798-01-8], 31 141 PGaClgH36, Gallium, trihydro(tricyclohexyl-phosphine)-, (T-4)-, [141727-22-2], 31 79 PI07ReC7H, Rhenium, tetracarbonyliodo (trimethyl phosphite-P)-, (OC-6-33)-, [134770-89-1], 31 249 PN02C24H42, Acetamide, Al,/V-bis(2-methyl-propyl>-2-(octylphenylphosphinyl)-, [83242-95-9], 31 145... 

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