The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Jean-françois Brière - One of the best experts on this subject based on the ideXlab platform.
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Organocatalyzed Thia-Michael Addition and Sequential Inverse Electron Demanding Diels-Alder Reaction to 3-Vinyl-1,2,4- triazine Platforms
Advanced Synthesis and Catalysis, 2017Co-Authors: Clément Berthonneau, F. Buttard, M.-a. Hiebel, F. Suzenet, Jean-françois BrièreAbstract:This work highlights the use of 3‐vinyl‐1,2,4‐triazines as original thia‐Michael acceptors and inverse electron demanding Diels‐Alder platforms en route to new 7,8‐dihydro‐5H‐thiopyrano[4,3‐b ]pyridines. The required but rather unstable propargylthiol nucleophiles were successfully generated in‐situ upon an innovative DBU‐catalyzed methanolysis event of the corresponding propargyl Thioacetate derivatives.
William F. Wood - One of the best experts on this subject based on the ideXlab platform.
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Volatile Components in Defensive Spray of the Hooded Skunk, Mephitis macroura
Journal of Chemical Ecology, 2002Co-Authors: William F. Wood, Brian G. Sollers, Gwen A. Dragoo, Jerry W. DragooAbstract:GC-MS analysis of the anal sac secretion from the hooded skunk, Mephitis macroura , showed the following seven major components comprised 99% of the volatiles in this secretion: ( E )-2-butene-1-thiol, 3-methyl-1-butanethiol, S -( E )-2-butenyl Thioacetate, S -3-methylbutenyl Thioacetate, 2-phenylethanethiol, 2-methylquinoline, and 2-quinolinemethanethiol. Minor volatile components identified in this secretion are phenylmethanethiol, S -phenylmethyl Thioacetate, S -2-phenylethyl Thioacetate, bis[( E )-2-butenyl] disulfide, ( E )-2-butenyl 3-methylbutyl disulfide, bis(3-methylbutyl) disulfide, and S -2-quinolinemethyl Thioacetate. This secretion is similar to that of the striped skunk, Mephitis mephitis , differing only in that it contains four compounds not reported from the striped skunk: phenylmethanethiol, S -phenylmethyl Thioacetate, 2-phenylethanethiol, and S -2-phenylethyl Thioacetate.
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Volatile components in defensive spray of the spotted skunk,Spilogale putorius
Journal of Chemical Ecology, 1991Co-Authors: William F. Wood, Christopher G. Morgan, Alison MillerAbstract:GC-MS analysis of the anal sac secretion from the spotted skunk, Spilogale putorius , showed three major volatile components: ( E )-2-butene-1-thiol, 3-methyl-1-butanethiol, and 2-phenylethanethiol. Minor volatile components identified from this secretion were: phenylmethanethiol, 2-methylquinoline, 2-quinolinemethanethiol, bis[( E )-2-butenyl] disulfide, ( E )-2-butenyl 3-methylbufyl disulfide, bis(3-methylbutyl) disulfide. All of these compounds except 2-phenylethanethioi have been identified previously from the striped skunk, Mephitis mephitis. The Thioacetate derivatives S- (E) -2-butenyl Thioacetate, S -3-methylbutanyl Thioacetate, and S -2-quinolinemethyl Thioacetate found in the striped skunk were not seen in this species.
Clément Berthonneau - One of the best experts on this subject based on the ideXlab platform.
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Organocatalyzed Thia-Michael Addition and Sequential Inverse Electron Demanding Diels-Alder Reaction to 3-Vinyl-1,2,4- triazine Platforms
Advanced Synthesis and Catalysis, 2017Co-Authors: Clément Berthonneau, F. Buttard, M.-a. Hiebel, F. Suzenet, Jean-françois BrièreAbstract:This work highlights the use of 3‐vinyl‐1,2,4‐triazines as original thia‐Michael acceptors and inverse electron demanding Diels‐Alder platforms en route to new 7,8‐dihydro‐5H‐thiopyrano[4,3‐b ]pyridines. The required but rather unstable propargylthiol nucleophiles were successfully generated in‐situ upon an innovative DBU‐catalyzed methanolysis event of the corresponding propargyl Thioacetate derivatives.
Sunwoo Lee - One of the best experts on this subject based on the ideXlab platform.
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Palladium-catalyzed carbonylation of Thioacetates and aryl iodides for the synthesis of S-aryl thioesters
Organic Chemistry Frontiers, 2018Co-Authors: Myungjin Kim, Jeung Gon Kim, Sunwoo LeeAbstract:Thioesters were synthesized via palladium-catalyzed carbonylation of Thioacetates and aryl iodides. S-Aryl Thioacetates coupled with carbon monoxide and aryl iodides to afford the desired S-aryl thioesters in good yields. The reaction showed good functional group tolerance toward fluoro, chloro, ketone, ester, aldehyde, cyano, and nitro groups. The tandem reaction of the direct S-arylation of aryl iodides from potassium Thioacetate (KSAc) and subsequent carbonylation of the intermediates S-aryl Thioacetates provided S-aryl thioesters in moderate-to-good yields.
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One-Pot Synthesis of Symmetrical and Unsymmetrical Aryl Sulfides by Pd-Catalyzed Couplings of Aryl Halides and Thioacetates
The Journal of organic chemistry, 2011Co-Authors: Namjin Park, Kyungho Park, Mihee Jang, Sunwoo LeeAbstract:Aryl sulfides were obtained from the coupling reaction of S-aryl (or S-alkyl) Thioacetates and aryl bromides in the presence of palladium catalyst. This reaction method enables the one-pot synthesis of symmetrical and unsymmetrical diaryl sulfides by employing potassium Thioacetate with aryl iodides and aryl bromides.
Mogens Brøndsted Nielsen - One of the best experts on this subject based on the ideXlab platform.
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Bismuth(III)‐Promoted Acetylation of Thioethers into Thioacetates
European Journal of Organic Chemistry, 2015Co-Authors: Martyn Jevric, Anne Ugleholdt Petersen, Mads Mansø, Anders Ø. Madsen, Mogens Brøndsted NielsenAbstract:The Thioacetate group is extensively employed as an anchoring group for attachment of molecules onto gold surfaces or between electrodes in molecular electronics. On account of its ready hydrolysis, it is often incorporated in the last step of a synthetic sequence from the corresponding tert-butyl thioether. Here we present a particularly convenient method for this conversion using AcCl in combination with Bi(OTf)3, which is known as an environmentally friendly salt. A large variety of redox-active and photoactive substrates with tert-butyl thioether end-cap(s) was prepared, including molecules incorporating dithiafulvene, dicyanoethylene, dihydroazulene, fulleropyrrolidine, and triazole units, and successfully subjected to a BiIII promoted conversion into products with Thioacetate end-cap(s). The azide group could also withstand these conditions, which allowed us to prepare S-(4-azidophenyl) ethanethioate that presents a convenient building block for subsequent CuAAC reactions.
