Process for producing an alcohol or a silyl ether thereof
申请人:Shibasaki Masakatsu
公开号:US20060199973A1
公开(公告)日:2006-09-07
A process for producing an alcohol or a silyl ether thereof of formula (4):
wherein R
1
represents a hydrocarbon, a heterocyclic, or an alkoxycarbonyl group; R
2
represents hydrogen or CO
2
R; X represents an aryl or an alkenyl group of formula (3):
and R
8
represents hydrogen or a silyl residue, by reacting a compound R
1
(C═O)R
2
with a silane (R
3
)
2
R
4
Si—X, wherein R
3
and R
4
each represents an alkyl, an alkoxy, or an aryl group; in the presence of (i) a catalyst component containing copper fluoride or a catalyst component containing a copper compound and a fluoride and (ii) a bidentate phosphine compound or in the presence of a complex obtained from the foregoing components.
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.
Antitumor activity of bis(diphenylphosphino)alkanes, their gold(I) coordination complexes, and related compounds
作者:Christopher K. Mirabelli、David T. Hill、Leo F. Faucette、Francis L. McCabe、Gerald R. Girard、Deborah B. Bryan、Blaine M. Sutton、Joan O. Leary Barus、Stanley T. Crooke、Randall K. Johnson
DOI:10.1021/jm00395a004
日期:1987.12
inactive. Among dppe analogues, replacement of phenyl groups with ethyl or benzyl groups resulted in inactivity for both ligands and the corresponding gold complexes whereas substitution with cyclohexyl or heterocyclic ring systems yielded ligands and/or gold complexes with antitumor activity. Among substituted-phenyl dppe and dppe(AuCl)2 analogues, 3-fluoro, 4-fluoro, perdeuterio, 4-methylthio, and 2-methylthio
Trap-Free Halogen Photoelimination from Mononuclear Ni(III) Complexes
作者:Seung Jun Hwang、David C. Powers、Andrew G. Maher、Bryce L. Anderson、Ryan G. Hadt、Shao-Liang Zheng、Yu-Sheng Chen、Daniel G. Nocera
DOI:10.1021/jacs.5b03192
日期:2015.5.27
Halogen photoelimination reactions constitute the oxidative half-reaction of closed HX-splitting energy storage cycles. Here, we report high-yielding, endothermic Cl2 photoelimination chemistry from mononuclear Ni(III) complexes. On the basis of time-resolved spectroscopy and steady-state photocrystallography experiments, a mechanism involving ligand-assisted halogen elimination is proposed. Employing
卤素光消除反应构成闭合的 HX 分裂能量存储循环的氧化半反应。在这里,我们报告了单核 Ni(III) 配合物的高产、吸热 Cl2 光消除化学。在时间分辨光谱和稳态光晶体学实验的基础上,提出了一种涉及配体辅助卤素消除的机制。采用辅助配体促进消除提供了一种策略,可以规避 3d 金属配合物固有的短寿命激发态,以激活具有热力学挑战性的键。
Rhodium(i) complexes of unsymmetrical diphosphines: efficient and stable methanol carbonylation catalysts
作者:Charles-Antoine Carraz、A. Guy Orpen、Dianne D. Ellis、Paul G. Pringle、Evert J. Ditzel、Glenn J. Sunley
DOI:10.1039/b002802i
日期:——
Rhodium complexes of unsymmetrical diphosphines of the type Ph2PCH2CH2PAr2 are catalysts for the carbonylation of methanol; several features of the catalysis are reminiscent of iridium carbonylationcatalysts.