A facile conversion of olefins into carboxylic acids could be achieved by using aqueous hydrogen peroxide (35%-H2O2) in the presence of catalytic amounts of tungstic acid (5 wt%). The oxidation was markedly influenced by the acidity of the reaction medium, and it was found to proceed favorably under a weak acidic condition (pH 4–5).
Development of an Enzymatic Process for the Production of (<i>R</i>)-2-Butyl-2-ethyloxirane
作者:Gheorghe-Doru Roiban、Peter W. Sutton、Rebecca Splain、Christopher Morgan、Andrew Fosberry、Katherine Honicker、Paul Homes、Cyril Boudet、Alison Dann、Jiasheng Guo、Kristin K. Brown、Leigh Anne F. Ihnken、Douglas Fuerst
DOI:10.1021/acs.oprd.7b00179
日期:2017.9.15
epoxide resolution process was rapidly developed that allowed access to multigram scale quantities of (R)-2-butyl-2-ethyloxirane 2 at greater than 300 g/L reaction concentration using an easy-to-handle and store lyophilized powder of epoxide hydrolase from Agromyces mediolanus. The enzyme was successfully fermented on a 35 L scale and stability increased by downstream processing. Halohydrin dehalogenases
METHOD FOR PRODUCING DIVINYL ETHER COMPOUND HAVING ALKYLENE SKELETON
申请人:MARUZEN PETROCHEMICAL CO., LTD.
公开号:US20220033334A1
公开(公告)日:2022-02-03
A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1)
wherein R
1
is an alkylene group having 4 to 20 carbon atoms, with acetylene by using an alkali metal catalyst; and purifying the divinyl ether compound of formula (2)
which is obtained in the reacting, without an extraction.
Palladium on Charcoal Catalyzed 3,4-Hydroperoxidation of α-Substituted Enals with Triethylsilane and Water
作者:Petri Pihko、Sakari Tuokko
DOI:10.1055/s-0035-1561633
日期:——
α-substituted acroleins with triethylsilane and water under Pd/C catalysis and aerobic conditions. The reaction is composed of a Pd/C-catalyzed conjugate reduction step and a hydroperoxidation step. The hydroperoxidation takes place via autoxidation of sufficiently stable enols formed in situ by transfer hydrogenation. Upon reduction, 2,2-disubstituted 1,2-diols are obtained directly from aldehydes.
Renewable plasticizer alcohols from olefin oligomers and methods for making the same
申请人:The United States of America, as Represented by the Secretary of the Navy
公开号:US09938214B1
公开(公告)日:2018-04-10
An efficient, low-temperature process to convert well-defined olefin oligomers, particularly butene oligomers to branched chain alcohols suitable for use as precursors to plasticizers commonly used in industry, and more specifically, the olefin feedstocks can be conveniently and renewably produced from short chain alcohols.