trans-1,4-Diphosphacyclohexanes were successfully synthesized by the stereospecific intramolecular coupling reaction of the optically active bisphosphine. This is a new route for the construction of the trans-1,4-diphosphacyclohexane skeleton. A cis isomer was also prepared along with the trans isomer from a mixture of rac- and meso-bisphosphines. The coordinated boranes were easily removed to afford
Direct syntheses of 1-phenylphosphetane and 1-phenylphosphirane. Crystal and molecular structures of cyclotrimerisation precursor complexes fac-[Mo(CO)3(PhPCH2CH2CH2)3] and fac-[Mo(CO)3(PhPCH2CH2)3]
作者:Yew Beng Kang、Michael Pabel、Anthony C. Willis、S. Bruce Wild
DOI:10.1039/c39940000475
日期:——
2-dichloroethane to give 1-phenylphosphetane or 1-phenylphosphirane, respectively; the free phosphines have been used to prepare the cyclotrimerisation precursor complexes fac-[Mo(CO)3(Ph[graphic omitted]H2)3] and fac-[Mo(CO)3([graphic omitted]H2)3].
苯基磷酸二锂与1,3-二氯丙烷或1,2-二氯乙烷反应分别生成1-苯基膦烷或1-苯基膦烷; 游离膦已用于制备环三聚体前体复合物fac- [Mo(CO)3(Ph [图中省略] H 2)3 ]和fac- [Mo(CO)3(Graph [图中省略] H 2)3 ] 。
Process for the dimerization of olefins
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0170311A2
公开(公告)日:1986-02-05
A process for the dimerization in the liquid phase of an aliphatic mono-olefin having 2 to 12 carbon atoms with a catalytic system formed by combining, in the presence of water, an alcohol or a carboxylic acid:-
a) a palladium compound,
b) a chelate ligand having as coordinating atoms at least two Group 5a atoms which are connected through a chain comprising 2 to 6 carbon atoms, and
c) a compound containing an anion of an acid, except hydrohalogenic acids.
Process for the carbonylation of allenically unsaturated compounds
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0190473A1
公开(公告)日:1986-08-13
The process for the carbonylation of an allenically unsaturated compound with CO in the presence of water, an alcohol and/or a carboxylic acid is carried out in the presence of a catalyst formed by combining:-
a) a Pd(II) compound,
b) ≧ 15 mol of an organic phosphine per gram atom of Pd(II), and
c) protonic acid having a pKa > 1.5 and/or a carboxylic acid having a pK a ≦ 1.5, both measured at 18 °C in aqueous solutions.
在有水、醇和/或羧酸存在的情况下,用 CO 对异烯不饱和化合物进行羰基化的工艺是在一种催化剂存在的情况下进行的,这种催化剂是由以下两种物质结合而成的
a) 钯(II)化合物、
b) 每克钯(II)原子≧ 15 摩尔的有机膦,以及
c) pKa > 1.5 的质子酸和/或 pK a ≦ 1.5 的羧酸(均在 18 °C 的水溶液中测量)。
Process for the dimerization of ethylenically unsaturated compounds
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0206367A2
公开(公告)日:1986-12-30
The dimerization of acrylate esters and of ethene and the codimerization of acrylate esters with C2-4-alkenes or 1,3-butadiene and of 1,3-butadiene with ethene in the presence of:
(a) a Pd and/or Ru compound,
(b) a compound containing one trivalent N or P atom, and
(c) an Ag and/or Cu salt, yields at an increased reaction rate dimers of high linearity, when a quinone is also present.
丙烯酸酯和乙烯的二聚化,以及丙烯酸酯与 C2-4- 烷烃或 1,3-丁二烯和 1,3-丁二烯与乙烯在下列物质存在下的共聚化:
(a) Pd 和/或 Ru 化合物、
(b) 含一个三价 N 原子或 P 原子的化合物,以及
(c) Ag 和/或 Cu 盐,在同时存在醌的情况下,以更高的反应速率生成线性度更高的二聚 物。