The Methoxycarbonylation of Vinyl Acetate Catalyzed by Palladium Complexes of [1,2-Phenylenebis(methylene)]bis[di(tert-butyl)phosphine]
作者:Adam J. Rucklidge、George E. Morris、Alexandra M. Z. Slawin、David J. Cole-Hamilton
DOI:10.1002/hlca.200690174
日期:2006.8
Palladium complexes of [1,2-phenylenebis(methylene)]bis[di(tert-butyl)phosphine] (1) catalyze the methoxycarbonylation of vinyl acetate (= ethenyl acetate) in the presence of methanesulfonic acid (Scheme 1). High selectivities to ester products can be obtained if free phosphine ligand is in excess over the amount of added acid (Table 1). Selectivities to methyl 2-acetoxypropanoate, a precursor to lactate
[EN] ALKOXYCARBONYLATION OF VYNIL ESTERS<br/>[FR] ALCOXYCARBONYLATION D'ESTERS VINYLIQUES
申请人:LUCITE INT UK LTD
公开号:WO2005118519A1
公开(公告)日:2005-12-15
A process for the alkoxycarbonylation of a vinyl ester comprising reacting a vinyl ester with carbon monoxide in the presence of an alkanol and a catalyst system. The catalyst system used in the said process is obtainable by combining: a) a metal of Group VIII B or a compound thereof, and b) a bidentate ligand of general formula (I) wherein, R is a covalent bridging group; R1 together with Q2 to which it is attached form an optionally substituted 2-Q2-tricyclo[3.3.1.1 3,7}]decyl group or derivative thereof(2-PA); R2 and R3 independently represent univalent radicals upto 20 atoms or jointly form a bivalent radical of up to 20 atoms; and Q1 and Q2 each independently represent phosphorous, arsenic or antimony. The process is carried out for the production of a 3-hydroxy propanoate ester or acid of formula (II) CH2 (OH)CH2 C(O) OR28. The process may also be carried out for the production of a lactate ester or acid of formula (III).
一种用于烯丙酸酯的烷氧羰基化的方法,包括在存在一种烷醇和一个催化剂体系的情况下,将烯丙酸酯与一氧化碳反应。所述方法中使用的催化剂体系可通过组合以下物质获得:a) VIII B族金属或其化合物,以及b) 一种一般式(I)的双齿配体,其中,R是一个共价桥接基团;R1与其连接的Q2共同形成一个可选择地取代的2-Q2-三环[3.3.1.1 3,7}]癸基团或其衍生物(2-PA);R2和R3独立地代表最多20个原子的一价基团,或共同形成最多20个原子的二价基团;Q1和Q2各自独立地代表磷、砷或锑。该方法用于生产式(II) CH2 (OH)CH2 C(O) OR28的3-羟基丙酸酯或酸。该方法也可用于生产式(III)的乳酸酯或酸。
Methoxycarbonylation of vinyl acetate catalysed by palladium complexes of bis(ditertiarybutylphosphinomethyl)benzene and related ligands
作者:Adam J. Rucklidge、George E. Morris、David J. Cole-Hamilton
DOI:10.1039/b414460k
日期:——
High selectivities to methyl acetoxypropanoate esters (b : l up to 3.6 : 1) are obtained from the methoxycarbonylation of vinyl acetate catalysed by palladium complexes of bis(ditertiarybutylphosphinomethyl)benzene in the presence of acid, provided that the acid concentration does not exceed that of the free phosphine.
在酸存在下,使用双(二叔丁基膦甲基)苯的钯配合物催化乙酸乙烯酯的甲氧羰基化反应,若酸浓度不超过自由膦的浓度,则可获得对乙酰氧基丙酸甲酯选择性高的产物(b : l 高达 3.6 : 1)。
エチレン性不飽和化合物のカルボニル化
申请人:——
公开号:JP2015110608A
公开(公告)日:2015-06-18
PROBLEM TO BE SOLVED: To provide a process for the carbonylation of ethylenically unsaturated compounds including vinyl esters and a process for the production of 3-hydroxypropanoate esters or 3-hydroxypropanoic acids.SOLUTION: The process comprises reacting the compound with carbon monoxide in the presence of a source of hydroxyl groups and of a catalyst system. The catalyst system is obtainable by combining: (a) a metal of Group 8, 9 or 10 or a compound thereof: and (b) a bidentate ligand of general formula (I): X(X)-Q-A-R-B-Q-X(X).
A compound represented by formula (I):
wherein R
1
represents a hydrogen atom or a methyl group;
R
2
represents a C1-C12 hydrocarbon group;
X
a
and X
b
each independently represent an oxygen atom or a sulfur atom;
X
11
represents a C1-C12 divalent saturated hydrocarbon group where a hydrogen atom can be replaced by a fluorine atom; and
A
1
represents a C1-C12 divalent saturated hydrocarbon group or *-A
2
-X
1
-(A
3
-X
2
)
a
-A
4
-, where * represents a binding site to an oxygen atom, A
2
, A
3
and A
4
each independently represent a C1-C12 divalent hydrocarbon group, X
1
and X
2
each independently represent —O—, —CO—O—, —O—CO— or —O—CO—O—, and “a” represents 0 or 1.