Direct esterification of olefins: The challenge of mechanism determination in heterogeneous catalysis
作者:Jeffrey C. Gee、Shane Fisher
DOI:10.1016/j.jcat.2015.08.010
日期:2015.11
The reversible, direct esterification of 1-hexene and 1-octene with heptanoic acid on Amberlyst® 15 (dry) was studied at 75 °C to determine kinetics and mechanism. The forward surface reaction occurred by an Eley–Rideal mechanism, in which adsorbed olefin reacted with bulk phase heptanoic acid; the reverse reaction, ester decomposition, required just one surface site. While detailed studies pointed
One-pot esters synthesis from secondary alcohols and CO catalyzed byPd-phosphine systems
作者:Nadezhda T. Sevostyanova、Sergey A. Batashev、Anastasiya S. Rodionova、Dar'ya K. Kozlenko
DOI:10.1016/j.tet.2023.133653
日期:2023.10
The aim of the work is to develop the esters syntheses by combining in one reactor the acid–catalytic intramolecular alcohols dehydration and the resulting alkenes alkoxycarbonylation. Esters were synthesized from cycloalkanols or secondary alkanols C5–C9 and CO under mild conditions. For the first time, a wide range of catalytic systems including palladium precursor, organophosphine, strong protonic
这项工作的目的是通过在一个反应器中结合酸催化分子内醇脱水和由此产生的烯烃烷氧基羰基化来开发酯合成。在温和条件下,由环烷醇或仲烷醇C 5 –C 9与CO合成酯。首次在基于环己醇和 CO 的模型一锅法工艺中测试了多种催化体系,包括钯前体、有机膦、强质子酸和结合水添加剂。直链仲醇 C 6、C 7和 C 9与 XANTPHOS 促进剂一起在 Pd 系统催化的异构化烷氧基羰基化反应器中组合。这些过程导致异构酯的形成,其中 60-73% 是直链羧酸酯,是末端 CO 加成到烯烃上的产物。
Schlenk,W., Justus Liebigs Annalen der Chemie, 1973, p. 1179 - 1194
作者:Schlenk,W.
DOI:——
日期:——
Secondary Esters, Methods of Making, and Uses Thereof
申请人:Chevron Phillips Chemical Company LP
公开号:US20160319178A1
公开(公告)日:2016-11-03
A composition comprising at least 75 mol % C
6
to C
9
monocarboxylic acid secondary C
6
to C
12
esters, wherein the C
6
to C
9
monocarboxylic acid secondary C
6
to C
12
esters comprise at least 20 mol % of a C
6
to C
9
monocarboxylic acid 2-hexyl ester, a C
6
to C
9
monocarboxylic acid 2-heptyl ester, a C
6
to C
9
monocarboxylic acid 2-octyl ester, a C
6
to C
9
monocarboxylic acid 2-nonyl ester, a C
6
to C
9
monocarboxylic acid 2-decyl ester, a C
6
to C
9
monocarboxylic acid 2-undecyl ester, a C
6
to C
9
monocarboxylic acid 2-dodecyl ester, or combinations thereof.