Urea derivative organocatalyzed enantioselective Friedel-Crafts alkylation of α-naphthols with isatins.
Sign Up to like & getrecommendations! Published in 2022 at "Chirality"
DOI: 10.1002/chir.23447
Abstract: An organocatalytic enantioselective Friedel-Crafts alkylation of α-naphthols with isatin derivatives was catalyzed by Takemoto-type urea catalyst to give optical active 3-(naphthalen-2-yl)-3-hydroxy-2-oxindoles in 75%-92% yields with up to 95% enantiomeric excess (ee) value. The catalyst type… read more here.
Keywords: crafts alkylation; alkylation naphthols; enantioselective friedel; friedel crafts ... See more keywords
Direct Syntheses of Diphenylmethanol Derivatives from Substituted Benzenes and CHCl3 through Friedel‐Crafts Alkylation and Post‐Synthetic Hydrolysis or Alcoholysis Catalyzed by Alumina
Sign Up to like & getrecommendations! Published in 2022 at "ChemistryOpen"
DOI: 10.1002/open.202200042
Abstract: Abstract The present study reports an innovative finding that alumina containing water or primary alcohol catalyzes the hydrolysis or alcoholysis, respectively, of the product formed through AlCl3‐mediated Friedel‐Crafts alkylation of methyl‐substituted benzenes and CHCl3. The… read more here.
Keywords: syntheses diphenylmethanol; crafts alkylation; friedel crafts; hydrolysis alcoholysis ... See more keywords
PNA as Hybrid Catalyst Scaffold Catalyzed Asymmetric Friedel–Crafts Alkylation
Sign Up to like & getrecommendations! Published in 2020 at "Catalysis Letters"
DOI: 10.1007/s10562-020-03106-1
Abstract: Abstract Double-stranded DNA can form efficient hybrid catalysts for asymmetric catalysis upon binding of small metal complexes, which has attracted significant interest. Catalytic microenvironment and chiral transfer are still a matter of concern. Here, we… read more here.
Keywords: catalyst scaffold; hybrid catalyst; pna hybrid; catalyst ... See more keywords
Hybrid porous hypercrosslinking polyanilines: facile Friedel–Crafts preparation, CO2 capture and Cr(VI) removal properties
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Porous Materials"
DOI: 10.1007/s10934-019-00747-5
Abstract: In this work, a series of hybrid porous hypercrosslinked polyanilines were successfully synthesized by polyaniline and octavinylsilsesquioxane (OVS) via the Friedel–Crafts alkylation reaction. Compared with N-alkylation reaction, the new synthetic approach circumvents some intractable problems,… read more here.
Keywords: hybrid porous; removal; polyanilines facile; hypercrosslinking polyanilines ... See more keywords
Smoke suppression of graphene platelets fabricated by Friedel–Crafts reaction in brominated flame-retarded PS
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Thermal Analysis and Calorimetry"
DOI: 10.1007/s10973-017-6093-y
Abstract: Graphene nanoplatelets (GNPs) were introduced into polystyrene (PS)/brominated polystyrene (BPS) blends to suppress the large amounts of smoke generated from brominated flame retardants during combustion. A Lewis acid catalyst (AlCl3) was added to initiate Friedel–Crafts… read more here.
Keywords: friedel crafts; gnps; crafts reaction; fabricated friedel ... See more keywords
In quest of reversibility of Friedel-Crafts acyl rearrangements in the pyrene series
Sign Up to like & getrecommendations! Published in 2019 at "Structural Chemistry"
DOI: 10.1007/s11224-019-01460-4
Abstract: Friedel-Crafts acyl rearrangements in PPA of diacetylpyrenes (80–120 °C), dibenzoylpyrenes (80–200 °C), and bis(4-flurobenzoyl)pyrenes (80–120 °C) and Scholl reactions in AlCl 3 /NaCl of dibenzoylpyrenes (140–200 °C) have been studied. The substrates were 1-AcPY ,… read more here.
Keywords: quest reversibility; acyl rearrangements; crafts acyl; reversibility friedel ... See more keywords
Functionalization of Syndiotactic Polystyrene via Superacid-Catalyzed Friedel–Crafts Alkylation
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DOI: 10.1007/s11244-018-0913-6
Abstract: Crystalline syndiotactic polystyrene (sPS) was functionalized by superacid-catalyzed Friedel–Crafts alkylation. Once a tertiary carbocation is generated by the reaction of tertiary alcohols and triflic acid, it subsequently reacted with aromatic ring of sPS, forming alkyl… read more here.
Keywords: crafts alkylation; superacid catalyzed; syndiotactic polystyrene; catalyzed friedel ... See more keywords
Friedel-Crafts self-crosslinking of sulfonated poly(etheretherketone) composite proton exchange membrane doped with phosphotungstic acid and carbon-based nanomaterials for fuel cell applications
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Membrane Science"
DOI: 10.1016/j.memsci.2020.118381
Abstract: Abstract In this work, self-crosslinked sulfonated polyether etherketone membrane (C-SPEEK) was synthesized by Friedel-Crafts alkylation at 130 °C with chloromethylated sulfonated polyether etherketone (SPEEK-Cl). The water uptake (WU) of the C-SPEEK was 47.75% with a 8.69%… read more here.
Keywords: carbon; speek; self crosslinking; membrane ... See more keywords
Synthesis and catalytic reactivity in Friedel–Crafts acylations of monobridged bis(cyclopentadienyl)molybdenum(I) carbonyl complexes
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DOI: 10.1016/j.poly.2018.03.021
Abstract: Abstract When the monobridged biscyclopentadienes (C5H5)R(C5H5) [R = C(CH3)2 (1), Si(CH3)2 (2), C(CH2)5 (3)] reacted with Mo(CO)6 in refluxing xylene, the corresponding complexes [(η5-C5H4)2R][Mo(CO)3]2 [R = C(CH3)2 (4), Si(CH3)2 (5), C(CH2)5 (6)] were obtained. These complexes were separated by… read more here.
Keywords: molybdenum carbonyl; cyclopentadienyl molybdenum; bis cyclopentadienyl; carbonyl complexes ... See more keywords
Ultrasound assisted microencapsulation of zinc triflate in polyethersulfone as an efficient regioselective catalyst for Friedel-Crafts acylation reaction
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DOI: 10.1016/j.polymer.2019.122123
Abstract: Abstract The present work aims to fabricate ultrasonic assisted microencapsulation of zinc triflate based on polyethersulfone (PES) as an efficient regioselective catalyst for Friedel-Crafts acylation. The catalyst was reused for consequent reactions. Ultrasound displayed an… read more here.
Keywords: crafts acylation; reaction; assisted microencapsulation; catalyst ... See more keywords
Catalyst-free Friedel-Crafts reaction of 1-(N-acylamino)alkyltriarylphosphonium salts with electron-rich arenes
Sign Up to like & getrecommendations! Published in 2018 at "Tetrahedron"
DOI: 10.1016/j.tet.2018.03.053
Abstract: Abstract Friedel-Crafts reaction of 1-(N-acylamino)alkyltriarylphosphonium salts with arenes or heteroarenes without the need for any catalyst provided access to a wide range of biologically interesting N-(1-arylalkyl)amides or 1-arylalkylphosphonium salts which can be of great interest… read more here.
Keywords: acylamino alkyltriarylphosphonium; crafts reaction; reaction; reaction acylamino ... See more keywords