3- -6- 2 -Diphenylphosphino

Halpern J, Riley D P, Chan A S C and Pluth J J 1977 Novel coordination chemistry and catalytic properties of cationic 1,2-bis(diphenylphosphino)ethanerhodium(l) complexes J. Am. Chem. Soo. 99 8055-7... [Pg.2713]

Fn some cases, r-allylpalladium complex formation by retention syn attack) has been observed. The reaction of the cyclic allyiic chloride 33 with Pd(0) affords the 7r-allylpalladium chlorides 34 and 35 by retention or inversion depending on the solvents and Pd species. For example, retention is observed in benzene, THF, or dichloromethane with Pd2(dba)3. However, the complex formation proceeds by inversion in these solvents with Pd(Ph3P)4, whereas in MeCN and DMSO it is always inversion[33]. The syn attack in this case may be due to coordination of Pd to chlorine in 33, because Pd is halophilic. The definite syn attack in complex formation has been observed using stereoche-mically biased substrates. The reaction of the cxoallylic diphenylphosphino-acetate 36 with phenylzinc proceeds smoothly to give 37. The reaction can be explained by complex formation by a syn mechanism[31]. However, these syn attacks are exceptional, and normally anti attack dominates. [Pg.297]

PPFA jV,A -dimethyl-l,2-(diphenylphosphino)ferrocenyle hylamine py pyridine... [Pg.562]

Other molybdenum(II) compounds of interest include the nitric oxide complexes Mo(NO)Cl3 and Mo(NO)(dtc)3, /n j -MoH2(dppe)2 where dppe = l,2-bis(diphenylphosphino)ethane and K4 Mo2(SO J -2H20. [Pg.474]

Alkyl- and aryl-pyridazines can be prepared by cross-coupling reactions between chloropyridazines and Grignard reagents in the presence of nickel-phosphine complexes as catalysts. Dichloro[l,2-bis(diphenylphosphino)propane]nickel is used for alkylation and dichloro[l,2-bis(diphenylphosphino)ethane]nickel for arylation (78CPB2550). 3-Alkynyl-pyridazines and their A-oxides are prepared from 3-chloropyridazines and their A-oxides and alkynes using a Pd(PPh3)Cl2-Cu complex and triethylamine (78H(9)1397). [Pg.28]

Butane, 2,3-0-isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)-catalyst in homogeneous asymmetric hydrogenation, 6, 781 Butane-1,4-dioic acid, 2,2-di(indolyl)-synthesis, 4, 226 Butanenitrile, 4-hydroxy-dihydropyran synthesis from, 3, 769 Butanoic acid, -y-aryl-y-amino-synthesis, 1, 433 1-Butanol... [Pg.572]

Diphenylphosphino)ethyl ester (Dppe ester) (C6H5). CH2CH202CR... [Pg.245]

Trichloroethyl, 397 2-Haloethyl, 397 ft)-Chloroalkyl, 398 2-(Trimethylsilyl)ethyl, 399 2-Methylthioethyl, 400 1,3-Dithianyl-2-methyl, 400 2-(p-Nitrophenylsulfenyl)ethyl, 400 2-(p-Toluenesulfonyl)ethyl, 401 2-(2 -Pyridyl)ethyl, 401 2-(p-Methoxyphenyl)ethyl, 402 2-(Diphenylphosphino)ethyl, 402... [Pg.370]

Diphenylphosphino)ethyl (Dppe) Ester (C6H5)2PCH2CH202CR... [Pg.402]

S-(Dimethylphosphino)thioyl Group (Mpt-SR) (CH3)2P(S)SR 5-(Diphenylphosphino)thioyl Group (Ppt-SR) Pli2P(S)SR... [Pg.493]

The related 5-(diphenylphosphino)thioyl group (Ppt group) has also been cleaved using these conditions. The Mpt derivative of cysteine is not stable to DBU it forms dehydroalanine. The Mpt group is stable to TFA and to 1 M HCI, but not to HBr/AcOH or 6 M HCl. ... [Pg.493]

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