Sterically hindered (pyridyl)benzamidine palladium(II) complexes: Syntheses, structural studies, and applications as catalysts in the methoxycarbonylation of olefins
作者:Saphan O. Akiri、Stephen O. Ojwach
DOI:10.1002/aoc.6439
日期:2021.12
afford square planar compounds. Activation of the palladium(II) complexes with para-tolyl sulfonic acid (PTSA) afforded activecatalysts in the methoxycarbonylation of a number of alkene. The resultant catalytic activities were controlled by the both the complex structure and alkene substrate. While aliphaticsubstrates favored the formation of linear esters (>70%), styrene substrate resulted in the formation
Selective Mono- and Bis(alkoxycarbonylation)s of Olefins Catalyzed by Palladium in the Presence of Cu(I) or Cu(II) Chloride under Remarkably Mild Conditions. Application to the Synthesis of γ-Butyrolactone Derivatives
Palladium-catalyzed mono- and bis(alkoxycarbonylation)s of olefins were controlled by the use of copper(II) and copper(1) chloride, respectively, in alcohol under normal pressure of carbon monoxide and oxygen at room temperature without any other additives. 3-Buten-1-ols gave the corresponding γ-butyrolactones and 2-oxotetrahydrofuran-3-acetic acid esters, respectively, in high yields.
Tandem isomerisation–carbonylation catalysis: highly active palladium(ii) catalysts for the selective methoxycarbonylation of internal alkenes to linear esters
作者:Robert I. Pugh、Paul G. Pringle、Eite Drent
DOI:10.1039/b103754b
日期:——
Fast, selective conversion of internal olefins to linear esters is catalysed by Pd(II) complexes of chelating bis(phospha-adamantyl)diphosphines and the catalysis is acutely sensitive to the ligand backbone and even to the diastereomer used; the results are compared with those for the PBut2 analogue.
The analysis of the volatiles released by the novel bacterial isolate ChitinophagaFx7914 revealed the presence of ca. 200 compounds including different methylesters. These esters comprise monomethyl- and dimethyl-branched, saturated, and unsaturated fatty acid methylesters that have not been described as bacterial volatiles before. More than 30 esters of medium C-chain length were identified, which
LATENT HEAT STORAGE USING RENEWABLE PHASE CHANGE MATERIALS
申请人:TRENT UNIVERSITY
公开号:US20160214921A1
公开(公告)日:2016-07-28
A method of producing a diol diester, which includes reacting a fatty acid alkyl ester having 6 to 30 carbon atoms, an α,ω-alkanediol having n carbon atoms, wherein n is an integer from 2 to 22; and a basic transesterification catalyst, is provided. Use of the diol diesters as phase change materials is also provided.