6243-10-3Relevant academic research and scientific papers
METHOD FOR PRODUCING DICARBOXYLIC ACID
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Paragraph 0128, (2021/05/21)
A method for producing dicarboxylic acid. The method includes: subjecting a raw material system including a cyclic olefin and a lower monocarboxylic acid to an addition reaction in the presence of an addition reaction catalyst to generate an intermediate product system including cyclic carboxylic acid ester; and subjecting the intermediate product system including cyclic carboxylic acid ester to a ring-opening and oxidation reaction in the presence of an oxidant and an oxidation catalyst to generate a corresponding dicarboxylic acid product. The addition reaction in the dicarboxylic acid synthesis route achieves a high single-pass conversion rate, and the selectivity of the corresponding cyclic carboxylic acid ester is high. The addition-oxidation synthesis route achieves faster reaction rates for both the addition reaction and oxidation reaction, and high yield of corresponding dicarboxylic acid product. The addition-oxidation based synthesis route is suitable for continuous, stable and large-scale production of corresponding dicarboxylic acid product.
Scandium triflate catalyzed ester synthesis using primary amides
Atkinson, Benjamin N.,Williams, Jonathan M.J.
supporting information, p. 6935 - 6938 (2015/01/16)
A scandium triflate (ScOTf)3 catalyzed methodology has been developed to synthesize esters from primary amides. Various primary and secondary aliphatic alcohols have been shown to react in n-heptane with a range of primary amides for 24 h.
Recyclable hypervalent iodine(III) reagent iodosodilactone as an efficient coupling reagent for direct esterification, amidation, and peptide coupling
Tian, Jun,Gao, Wen-Chao,Zhou, Dong-Mei,Zhang, Chi
supporting information; experimental part, p. 3020 - 3023 (2012/08/07)
A hypervalent iodine(III) reagent plays a novel role as an efficient coupling reagent to promote the direct condensation between carboxylic acids and alcohols or amines to provide esters, macrocyclic lactones, amides, as well as peptides without racemization. The regeneration of iodosodilactone (1) can also be readily achieved. The intermediate acyloxyphosphonium ion C from the activation of a carboxylic acid is thought to be involved in the present esterification reaction.
Ruthenium pincer-catalyzed cross-dehydrogenative coupling of primary alcohols with secondary alcohols under neutral conditions
Srimani, Dipankar,Balaraman, Ekambaram,Gnanaprakasam, Boopathy,Ben-David, Yehoshoa,Milstein, David
supporting information, p. 2403 - 2406 (2012/11/07)
Cross-dehydrogenative coupling of primary alcohols with secondary alcohols to obtain mixed esters with the liberation of molecular hydrogen is achieved in high yield and good selectivity under neutral conditions, using a bipyridyl-based PNN ruthenium(II) pincer catalyst. Copyright
Ruthenium pincer-catalyzed acylation of alcohols using esters with liberation of hydrogen under neutral conditions
Gnanaprakasam, Boopathy,Ben-David, Yehoshoa,Milstein, David
supporting information; experimental part, p. 3169 - 3173 (2011/02/23)
Acylation of secondary alcohols using non-activated esters, in particular symmetrical esters (such as ethyl acetate), is achieved under neutral conditions with the liberation of molecular hydrogen. This unprecedented, environmentally benign reaction is homogenously catalyzed by a dearomatized ruthenium pincer PNN complex. Copyright
Assessment of formation channels of cyclohexyl mono- and dicarboxylates in oxidation of cyclohexane
Kotel'Nikova,Revkov,Voronina,Perkel
experimental part, p. 287 - 294 (2009/06/05)
Temperature dependences of the rate constants of the esterification reactions of the main carboxylic acids contained in oxidized cyclohexane (adipic, caproic, and formic) by cyclohexanol in a nonpolar medium were determined by solving the inverse kinetic problem.
A simple and convenient one-pot synthesis of fatty acid esters from hindered alcohols using N,N-dimethylchloro-sulfitemethaniminium chloride as dehydrating agent
Kaul, Savita,Kumar, Ajay,Sain, Bir,Gupta
, p. 2885 - 2891 (2007/10/03)
N,N-Dimethylchlorosulfitemethaniminium chloride (SOCl2-DMF) has been found to be an efficient reagent for one-pot synthesis of esters from equimolar amounts of fatty acids and hindered alcohols under mild conditions.
Synthesis and Bioevaluation of Alicyclic and Heterocyclic Alkanoates as Cockroach Attractants
Pandey, Karuna Shanker,Mendki, Murlidhar Jaywantrao,Rao, Karumuru Mallikarjuna,Vaidyanathaswamy, Ramamoorthy
, p. 725 - 727 (2007/10/02)
A series of homo and heterocyclic alkanoates were prepared and evaluated as insect attractants toward Blattella germanica (L.) and Supella longipalpa (F.).Among these compounds, the tetrahydrofurfuryl alkanoates and 4-tetrahydropyranyl hexanoate showed relatively better activity.It was also observed that, in general, the five-membered compounds were better performers than their six-membered counterparts.The introdiction of an oxygen atom in the ring enhanced the activity, irrespective of the ring size.
NONCHAIN CONVERSION OF alpha -DIKETONES AND TRANSACYLATION OF CARBOXYLIC-ACID ANHYDRIDES UNDER AUTOXIDATION CONDITIONS.
Perkel',Freidin,Neginskaya,Stolyankova,Ivanova
, p. 1444 - 1449 (2007/10/02)
The present investigation produced the following conclusion. The oxidation of 8,9-hexadecanedione by peroxylauric acid in benzene solution conforms to the kinetic equation for a second-order reaction. The oxidation is accompanied by transacylation of the caprylic anhydride formed with lauric acid. The anhydrides formed by transcylation take part in the formation of ester products of autoxidation. Lauric acid actively catalyzes the reaction of 8,9-hexadecanedione with peroxylauric acid.
PHOTOCHEMICAL REACTION OF ALCOHOLS - II. IRRADIATION OF AROMATIC ALCOHOLS
Balsells, R. Erra,Frasca, A. R.
, p. 2525 - 2538 (2007/10/02)
The UV irradiation of aromatic alcohols leads to the formation of several products: carbonyl compounds, ethers, α-glycols and tetra-aryl-1,4-dioxanes.The photoformation of α-glycols is qualitatively and quantitatively compared to the photoreduction of the carbonyl compounds.It is noteworthy that the glycols are formed with a stereochemistry very different depending upon whether the substrate is an alcohol or a carbonyl compound.The structure, configuration and conformation of the 1,4-dioxanes obtained are studied as well as their origin.Other aspects of the photochemistry of the alcohols are analyzed using hydroperoxides as model substrates.
