Lewis-Base-Catalyzed Alkylation Reaction of 4-Hydroxycoumarins with Allenoates: Regioselective Synthesis of 2H-[3,2-c] Furocoumarins and 4-Hydroxycoumarin Vinyl Ether Derivatives
Sign Up to like & getrecommendations! Published in 2017 at "Asian Journal of Organic Chemistry"
DOI: 10.1002/ajoc.201600631
Abstract: A milder, more regioselective and practical approach to C3 or O-alkylation reaction of 4-hydroxycoumarins has been established. Both 2H-[3,2-c] furocoumarins and 4-hydroxycoumarin vinyl ether derivatives could be efficiently prepared by alkylating 4-hydroxycoumarins with electron-deficient allenoates… read more here.
Keywords: vinyl ether; furocoumarins hydroxycoumarin; reaction hydroxycoumarins; reaction ... See more keywords
Efficient removal of acid from sulfuric acid alkylation reaction products by fiber coalescence technique: Lab-scale and industrial experiments
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cleaner Production"
DOI: 10.1016/j.jclepro.2020.124096
Abstract: Abstract Removing acid from sulfuric acid alkylation reaction products through fiber media is a new and challenging process in the industry. In this paper, a filler braided from stainless-steel fiber and polytetrafluoroethylene fiber is used… read more here.
Keywords: alkylation reaction; sulfuric acid; acid alkylation; acid ... See more keywords
Regioselective alkylation reaction of the 2′-deoxyctidine with 9-aminomethyl derivatives of SN38
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Molecular Structure"
DOI: 10.1016/j.molstruc.2018.08.096
Abstract: Abstract We present first evidence of a spontaneous alkylation of the 2′-deoxycytidine by potential topoisomerase I inhibitors from camptothecins family. The 7-ethyl-9-(N-morpholino)methyl-10-hydroxycamptothecin and the 7-ethyl-9-(N-pyrrolidinyl)methyl-10-hydoxycamptothecin regioselectively alkylate spontaneously an exo-cyclic nitrogen (N4) of the 2′-… read more here.
Keywords: regioselective alkylation; alkylation; alkylation reaction; reaction ... See more keywords
New Insights into the Progress on the Isobutane/Butene Alkylation Reaction and Related Processes for High-Quality Fuel Production. A Critical Review
Sign Up to like & getrecommendations! Published in 2020 at "Energy & Fuels"
DOI: 10.1021/acs.energyfuels.0c02962
Abstract: Although research in renewables is growing at a tremendous rate, the world will still be greatly dependent on fossil fuels for at least the first half of this century. In the quest for more efficie... read more here.
Keywords: isobutane butene; butene alkylation; insights progress; new insights ... See more keywords
Enantioselective Friedel-Crafts Alkylation Reaction of Pyrroles with N-Unprotected Alkynyl Trifluoromethyl Ketimines.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c01972
Abstract: Developed herein is an enantioselective Friedel-Crafts alkylation reaction of N-unprotected alkynyl trifluoromethyl ketimines with pyrroles catalyzed by chiral phosphoric acid to furnish chiral primary α-trifluoromethyl-α-(2-pyrrolyl)propargylamines with high enantioselectivity. Transformation of the alkynyl group of the… read more here.
Keywords: trifluoromethyl; unprotected alkynyl; crafts alkylation; friedel crafts ... See more keywords
Enantioselective Friedel–Crafts Alkylation Reaction of Indoles with α-Trifluoromethylated β-Nitrostyrenes Catalyzed by Chiral BINOL Metal Phosphate
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DOI: 10.1021/acscatal.9b01811
Abstract: An efficient enantioselective Friedel–Crafts alkylation reaction of indoles with α-CF3-substituted β-nitrostyrenes is disclosed. The key to success is the use of a chiral calcium BINOL bis(phosphate) complex as a Lewis acid catalyst. The reaction gives… read more here.
Keywords: enantioselective friedel; alkylation reaction; friedel crafts; crafts alkylation ... See more keywords
Enantioselective Reductive N-Cyclization-Alkylation Reaction of Alkene-Tethered Oxime Esters and Alkyl Iodides by Nickel Catalysis.
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DOI: 10.1021/jacs.2c05523
Abstract: Asymmetric cross-electrophile difunctionalization of tethered alkenes has become a powerful tool for the production of chiral cyclic scaffolds; however, the current studies all focus on carbocyclization reactions. Herein, we report an N-cyclization-alkylation reaction and thus… read more here.
Keywords: reaction; cyclization alkylation; alkyl iodides; cyclization ... See more keywords
Influence of Morphology of Zeolite Catalysts on the Main Indicators of the Isobutane Alkylation Reaction with Butylenes
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DOI: 10.1134/s0965544119110021
Abstract: The influence of the morphology of cation-exchanged zeolite catalysts synthesized from domestic NaX zeolites on the main indicators of the alkylation reaction of isobutane with butylenes has been studied. It has been found that the… read more here.
Keywords: zeolite catalysts; alkylation reaction; influence morphology; main indicators ... See more keywords