Search Results - "Kokotos, Christoforos G"

Green Metal‐Free Photochemical Hydroacylation of Unactivated Olefins by Voutyritsa, Errika, Kokotos, Christoforos G.

“…Direct alkylation of C(sp2)−H bonds to convert an aldehyde into a ketone is a notorious transformation, due to the laborious challenge of the formation of…”
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Photoinitiated Thiol‐Ene “Click” Reaction: An Organocatalytic Alternative by Limnios, Dimitris, Kokotos, Christoforos G.

“…The thiol‐ene coupling (TEC) reaction has attracted a lot of scientific attention during the last years, particularly in the fields of polymers, materials and…”
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2,2,2-Trifluoroacetophenone: An Organocatalyst for an Environmentally Friendly Epoxidation of Alkenes by Limnios, Dimitris, Kokotos, Christoforos G

“…A cheap, mild, fast, and environmentally friendly oxidation of olefins to the corresponding epoxides is reported using polyfluoroalkyl ketones as efficient…”
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Construction of Tertiary Alcohols Bearing Perfluoroalkyl Chains Catalyzed by Prolinamide-Thioureas by Kokotos, Christoforos G

“…A systematic study to evaluate the ability of various organocatalysts to catalyze the aldol reaction between acetone and 2,2,2-trifluoromethyl-1-phenylethanone…”
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Aldehydes as powerful initiators for photochemical transformations by Theodoropoulou, Maria A, Nikitas, Nikolaos F, Kokotos, Christoforos G

“…Photochemistry, the use of light to promote organic transformations, has been known for more than a century but only recently has revolutionized the way modern…”
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One-Pot Synthesis of Ureas from Boc-Protected Amines by Spyropoulos, Constantinos, Kokotos, Christoforos G

“…A practical one-pot synthesis of ureas is described. Boc-protected amines can be transformed into nonsymmetrical and symmetrical disubstituted and…”
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Cyrene: a bio-based solvent for the Mizoroki-Heck reaction of aryl iodides by Stini, Naya A, Gkizis, Petros L, Kokotos, Christoforos G

“…The development of greener and more sustainable methods, as well as the adaptation of already existing protocols to more environmentally friendly procedures,…”
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Metal‐free Photochemical Atom Transfer Radical Addition (ATRA) of BrCCl3 to Alkenes by Nikitas, Nikolaos F., Voutyritsa, Errika, Gkizis, Petros L., Kokotos, Christoforos G.

“…A simple, photochemical, and metal‐free protocol for the atom transfer radical addition (ATRA) of bromotrichloromethane onto various alkenes is described…”
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Enantioselective Organocatalytic Synthesis of 2‑Oxopiperazines from Aldehydes: Identification of the Elusive Epoxy Lactone Intermediate by Kaplaneris, Nikolaos, Spyropoulos, Constantinos, Kokotou, Maroula G, Kokotos, Christoforos G

“…An organocatalytic linchpin catalysis approach was envisaged to convert simple aldehydes into enantioenriched 2-oxopiperazines. A four-step reaction sequence…”
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Green and sustainable approaches for the Friedel-Crafts reaction between aldehydes and indoles by Kolagkis, Periklis X, Galathri, Eirini M, Kokotos, Christoforos G

“…The synthesis of indoles and their derivatives, more specifically bis(indolyl)methanes (BIMs), has been an area of great interest in organic chemistry, since…”
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Visible-Light-Mediated Catalytic Hydroacylation of Dialkyl Azodicarboxylates by Graphite Flakes by Koutoulogenis, Giorgos S, Kokotou, Maroula G, Voutyritsa, Errika, Limnios, Dimitris, Kokotos, Christoforos G

“…A novel and efficient metal-free catalyzed hydroacylation of dialkyl azodicarboxylates is reported. Graphite flakes were found to be the most efficient…”
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4‑Fluoro and 4‑Hydroxy Pyrrolidine-thioxotetrahydropyrimidinones: Organocatalysts for Green Asymmetric Transformations in Brine by Kaplaneris, Nikolaos, Koutoulogenis, Giorgos, Raftopoulou, Marianna, Kokotos, Christoforos G

“…The synthesis of both trans- and cis-diastereomers of pyrrolidinine-thioxotetrahydropyrimidinone bearing either a fluorine or a hydroxyl group was…”
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(Thio)urea-mediated synthesis of functionalized six-membered rings with multiple chiral centers by Koutoulogenis, Giorgos, Kaplaneris, Nikolaos, Kokotos, Christoforos G

“…Organocatalysis, now running its second decade of life, is being considered one of the main tools a synthetic chemist has to perform asymmetric catalysis. In…”
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Photocatalytic Atom Transfer Radical Addition to Olefins Utilizing Novel Photocatalysts by Voutyritsa, Errika, Triandafillidi, Ierasia, Tzouras, Nikolaos V, Nikitas, Nikolaos F, Pefkianakis, Eleftherios K, Vougioukalakis, Georgios C, Kokotos, Christoforos G

“…Photocatalysis is a rapidly evolving area of research in modern organic synthesis. Among the traditional photocatalysts, metal-complexes based on ruthenium or…”
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Primary Amine‐Thioureas based on tert‐Butyl Esters of Natural Amino Acids as Organocatalysts for the Michael Reaction by Kokotos, Christoforos G., Kokotos, George

“…A new class of primary amine‐thioureas based on tert‐butyl esters of (S)‐α‐amino acids and (1S,2S)‐diphenylethylenediamine was synthesized and their activity…”
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Organocatalytic asymmetric domino Michael-Henry reaction for the synthesis of substituted bicyclo[3.2.1]octan-2-ones by Tsakos, Michail, Elsegood, Mark R J, Kokotos, Christoforos G

“…The first organocatalytic asymmetric reaction between 1,4-cyclohexanedione and nitroalkenes has been studied, affording bicyclo[3.2.1]octane derivatives…”
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Enantioselective Organocatalytic Enamine C−H Oxidation/Diels‐ Alder Reaction by Džambaski, Zdravko, Tzaras, Dimitrios‐Ioannis, Lee, Sunggi, Kokotos, Christoforos G., Bondzic, Bojan P.

“…α,β‐unsaturated aldehydes have been traditionally used in LUMO lowering asymmetric aminocatalysis (iminium catalysis), while the use of saturated aldehydes as…”
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Sulfonamides of homoproline and dipeptides as organocatalysts for Michael and aldol reactions by Tsandi, Evaggelia, Kokotos, Christoforos G., Kousidou, Sofia, Ragoussis, Valentine, Kokotos, George

“…Sulfonamides of the non-natural amino acid homoproline and the dipeptide Pro–Phe were synthesised and evaluated for their catalytic activity in Michael and…”
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An Asymmetric Michael Addition of α,α-Disubstituted Aldehydes to Maleimides Leading to a One-Pot Enantioselective Synthesis of Lactones Catalyzed by Amino Acids by Kokotos, Christoforos G

“…A cheap and fast construction of both enantiomers of substituted succinimides is reported. α- or β-amino acids, such as β-phenylalanine and α-tert-butyl…”
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Green Organocatalytic Synthesis of Isoxazolines via a One-Pot Oxidation of Allyloximes by Triandafillidi, Ierasia, Kokotos, Christoforos G

“…A green, sustainable, organocatalytic, and efficient synthesis of isoxazolines from allyloximes was developed. A 2,2,2-trifluoroacetophenone-catalyzed…”
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