Base‐Catalyzed Decarboxylative Amination of In‐situ Generated ortho‐Quinone Methides: Synthesis of Benzyl Amines
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DOI: 10.1002/ajoc.202400380
Abstract: In this paper, a direct access to benzylic amines from in‐situ generated ortho‐quinone methides (o‐QMs) and isocya‐nate/isothiocyanate via decarboxylation is described. This base‐catalyzed methodology has high functional group tolerance and shows a wide range of… read more here.
Keywords: situ generated; ortho quinone; quinone methides; base catalyzed ... See more keywords
Synthesis of Trimethylolpropane Esters by Base‐Catalyzed Transesterification
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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
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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
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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
Prediction of Base-Catalyzed Hydrolysis Kinetics of Polychlorinated Dibenzo-p-Dioxins by Density Functional Theory Calculations.
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DOI: 10.1021/acs.est.3c08985
Abstract: Polychlorinated dibenzo-p-dioxins (PCDDs), comprising 75 congeners, have gained considerable attention from the general public and the scientific community owing to their high toxic potential. The base-catalyzed hydrolysis of PCDDs is crucial for the assessment of… read more here.
Keywords: catalyzed hydrolysis; polychlorinated dibenzo; base catalyzed; theory ... 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
Base-Catalyzed Chemo-, Regio- and Stereoselective Addition of Quinazolinones to Trifluoromethylated Internal Alkynes for Access to N3-Vinylquinazolinones.
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DOI: 10.1021/acs.orglett.5c01683
Abstract: A base-catalyzed addition of quinazolinones to unsymmetrical trifluoromethylated internal alkynes was accomplished for straightforward access to various N3-vinylquinazolinones. Excellent chemo-, regio-, and stereoselectivity were achieved along with moderate to good efficacy for broad substrate scope… read more here.
Keywords: base catalyzed; chemo regio; trifluoromethylated internal; internal alkynes ... See more keywords