Synthesis of Trimethylolpropane Esters by Base‐Catalyzed Transesterification
Sign Up to like & getrecommendations! Published in 2020 at "European Journal of Lipid Science and Technology"
DOI: 10.1002/ejlt.201900207
Abstract: Trimethylolpropane (TMP) esters are synthesized from fatty acid methyl esters (FAMEs) and TMP to produce a fluid with properties suitable for use as a lubricant base oil, exhibiting good stability, and low‐temperature performances. In this… read more here.
Keywords: trimethylolpropane esters; base catalyzed; synthesis trimethylolpropane; tmp ... See more keywords
Kinetic modeling of the continuous hydrothermal base catalyzed depolymerization of pine wood based kraft lignin in pilot scale
Sign Up to like & getrecommendations! Published in 2021 at "Industrial Crops and Products"
DOI: 10.1016/j.indcrop.2020.113119
Abstract: Abstract In this work, the continuous hydrothermal base catalyzed depolymerization of kraft lignin to phenolic oligomers was investigated. Using response surface methodology, a model equation for the oligomer yield in dependence of the four parameters… read more here.
Keywords: depolymerization; kraft lignin; hydrothermal base; base catalyzed ... See more keywords
Microwave assisted base-catalyzed 1,3-isomerization of 7-substituted cycloheptatriene bearing electron withdrawing groups
Sign Up to like & getrecommendations! Published in 2020 at "Journal of King Saud University - Science"
DOI: 10.1016/j.jksus.2018.05.013
Abstract: Abstract A series of 7-substituted cycloheptatrienes bearing EDG such as (3, X = –PPh3+, –P(O)Ph2, –SO2C6H4CH3, –OCOC6H4CH3 and –CN) were synthesized and their isomerization into the corresponding 2-isomers (4–8) has been achieved, under controlled microwave heating in… read more here.
Keywords: assisted base; isomerization substituted; microwave assisted; isomerization ... See more keywords
Base-catalyzed synthesis of superhydrophobic and antireflective films for enhanced photoelectronic applications
Sign Up to like & getrecommendations! Published in 2020 at "Journal of materials research and technology"
DOI: 10.1016/j.jmrt.2020.02.022
Abstract: Abstract In this work, a facile, cost-effective and environmentally friendly approach is developed to synthesize transparent silica sol for fabricating antireflective (AR) and superhydrophobic (SH) films on soda–lime glass. The transparent silica sol is prepared… read more here.
Keywords: synthesis superhydrophobic; silica; superhydrophobic antireflective; antireflective films ... See more keywords
Synthesis of trisubstituted 1,3-oxazin-6-ones via base-catalyzed ring-opening annulation of cyclopropenones with N-(pivaloyloxy)amides
Sign Up to like & getrecommendations! Published in 2018 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2018.02.084
Abstract: Abstract The base-catalyzed [3+3]-type annulation between cyclopropenones and N-(pivaloyloxy)amides is reported. The formal insertion of a 1,3-N,O-dipole into a cyclopropenone C C bond yields a six-membered azalactone structure. In the presence of catalytic K2CO3 at… read more here.
Keywords: oxazin ones; trisubstituted oxazin; pivaloyloxy amides; cyclopropenones pivaloyloxy ... See more keywords
Base-catalyzed synthesis of quinazolines in aqueous medium
Sign Up to like & getrecommendations! Published in 2019 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2019.151186
Abstract: Abstract An alternative green protocol and step economy for the synthesis of quinazoline has been developed. The reaction of readily available 2-aminobenzonitriles with various organometallic reagents led to ortho-aminoaryl N H ketimine species. The subsequent… read more here.
Keywords: aqueous medium; base catalyzed; synthesis quinazolines; catalyzed synthesis ... See more keywords
Development of Prediction Models on Base-Catalyzed Hydrolysis Kinetics of Phthalate Esters with Density Functional Theory Calculation.
Sign Up to like & getrecommendations! Published in 2019 at "Environmental science & technology"
DOI: 10.1021/acs.est.9b00574
Abstract: Many phthalate esters (PAEs) are chemicals of high production volume and of toxicological concern. The second-order rate constant for base-catalyzed hydrolysis ( kB) is a key parameter for assessing environmental persistence of PAEs. However, the… read more here.
Keywords: hydrolysis kinetics; phthalate esters; base catalyzed; hydrolysis ... See more keywords
Synthesis of Trisubstituted Chromanes by Lewis-Base-Catalyzed Three-Component Electrophilic Thiofunctionalization of Cyclopropene with Phenols via a Formal [3 + 3] Annulation.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c02072
Abstract: A Lewis-base-catalyzed three-component electrophilic thiofunctionalization of cyclopropene with phenol is developed to furnish various trisubstituted chromanes in high trans-diasteroselectivity. This metal-free protocol is easy to scale-up, offers a unique 2,2,3-substitution pattern, and delivers chromanes with… read more here.
Keywords: lewis base; component electrophilic; electrophilic thiofunctionalization; catalyzed three ... See more keywords
Factors Determining Selectivity of Acid- and Base-Catalyzed Self- and Cross-Condensation of Acetone and Cyclopentanone
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DOI: 10.1021/acscatal.0c02987
Abstract: In a combined kinetics and density functional theory (DFT) study, we have explored several factors that affect the selectivity of acid- and base-catalyzed self- and cross-aldol condensation of acet... read more here.
Keywords: acid base; base catalyzed; catalyzed self; self cross ... See more keywords
Brønsted base-catalyzed annulation of allyl ketones and alkynyl 1,2-diketones.
Sign Up to like & getrecommendations! Published in 2018 at "Chemical communications"
DOI: 10.1039/c8cc01020j
Abstract: The discovery of new reaction modes mediated by easily available substrates is an important research topic in organic synthesis. Allyl ketones and related compounds have been demonstrated to undergo γ- or α-selective additions to different… read more here.
Keywords: ketones alkynyl; allyl; base catalyzed; alkynyl diketones ... See more keywords
Cu/base co-catalyzed [3+3] cycloaddition for the synthesis of highly functionalized 4-fluoropyridines.
Sign Up to like & getrecommendations! Published in 2021 at "Chemical communications"
DOI: 10.1039/d1cc05412k
Abstract: An efficient, straightforward and general method for the de novo synthesis of highly functionalized 4-fluoropyridines was developed via a cooperative copper- and base-catalyzed [3+3] cycloaddition of active methylene isocyanides with difluorocyclopropenes. The resulting 4-fluoropyridines can… read more here.
Keywords: functionalized fluoropyridines; base catalyzed; catalyzed cycloaddition; synthesis highly ... See more keywords