The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform
Sergey A Kozmin - One of the best experts on this subject based on the ideXlab platform.
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preparation and 2 2 cycloaddition of 1 triisopropylsiloxy 1 hexyne with methyl Crotonate 3 butyl 4 methyl 2 triisopropylsiloxy cyclobut 2 enecarboxylic acid methyl ester
Organic Syntheses, 2011Co-Authors: Valeriy Shubinets, Michael P Schramm, Sergey A KozminAbstract:Methyl Crotonate Triisopropylsilyl trifluoromethanesulfonate Trifluoromethanesulfonanimide Silver carbonate Keywords: Cycloaddition; Triisopropylsiloxy-1-hexyne; MethylCrotonate; Siloxy alkynes; tert-Butyl hydroperoxide; Silylation; 1-Siloxy-1-alkynes; Cycloadditions; Waste disposal
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Organic Syntheses - Preparation and [2+2] Cycloaddition of 1‐Triisopropylsiloxy‐1‐Hexyne with Methyl Crotonate: 3‐Butyl‐4‐Methyl‐2‐Triisopropylsiloxy‐Cyclobut‐2‐Enecarboxylic Acid Methyl Ester
Organic Syntheses, 2010Co-Authors: Valeriy Shubinets, Michael P Schramm, Sergey A KozminAbstract:Methyl Crotonate Triisopropylsilyl trifluoromethanesulfonate Trifluoromethanesulfonanimide Silver carbonate Keywords: Cycloaddition; Triisopropylsiloxy-1-hexyne; MethylCrotonate; Siloxy alkynes; tert-Butyl hydroperoxide; Silylation; 1-Siloxy-1-alkynes; Cycloadditions; Waste disposal
Zhefeng Li - One of the best experts on this subject based on the ideXlab platform.
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synthesis of bicyclo 4 1 0 tetrahydropyridazines bya sequential 4 2 and 1 2 annulation reaction of azoalkenesand Crotonate derived sulfur ylides
Organic Letters, 2019Co-Authors: Ling Fang, Zhiyong Wang, Zhefeng LiAbstract:The base-induced unprecedented tandem [4 + 2] and [1 + 2] annulation reaction of in situ formed 1,2-diaza-1,3-dienes and Crotonate-derived sulfur ylides is reported. This protocol provides a novel and practical method for the synthesis of cyclopropane-fused tetrahydropyridazines with a quaternary carbon center in synthetically useful yield. In this tandem reaction, three new bonds were formed in one pot, and the Crotonate-derived sulfur ylide serves as a C3 synthon.
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Synthesis of Bicyclo[4.1.0]tetrahydropyridazines bya Sequential [4 + 2] and [1 + 2] Annulation Reaction of Azoalkenesand Crotonate-Derived Sulfur Ylides
Organic Letters, 2019Co-Authors: Ling Fang, Zhiyong Wang, Zhefeng LiAbstract:The base-induced unprecedented tandem [4 + 2] and [1 + 2] annulation reaction of in situ formed 1,2-diaza-1,3-dienes and Crotonate-derived sulfur ylides is reported. This protocol provides a novel and practical method for the synthesis of cyclopropane-fused tetrahydropyridazines with a quaternary carbon center in synthetically useful yield. In this tandem reaction, three new bonds were formed in one pot, and the Crotonate-derived sulfur ylide serves as a C3 synthon.
Xiangtai Meng - One of the best experts on this subject based on the ideXlab platform.
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substrate controlled domino reactions of Crotonate derived sulfur ylides synthesis of benzothiophene derivatives
Journal of Organic Chemistry, 2018Co-Authors: Wenhuan Ding, Youquan Zhang, Aimin Yu, Lei Zhang, Xiangtai MengAbstract:Substrate-controlled domino reactions between thioaurones or their analogues and Crotonate-derived sulfur ylides were developed and produced a broad spectrum of benzothiophene-fused pyran derivatives, substituted chromene derivatives. In these reactions, Crotonate-derived sulfur ylides acting as two-carbon synthons (α and β carbons or β and γ carbons) in annulation reactions are reported for the first time. These investigations nicely complement and expand previously studied reactions of Crotonate-derived sulfur ylides. In addition, reaction mechanisms for these domino reactions are proposed, one of which is supported by DFT calculations.
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nah promoted 4 3 annulation of Crotonate derived sulfur ylides with thioaurones synthesis of 2 5 dihydrobenzo 4 5 thieno 3 2 b oxepines
Chemical Communications, 2017Co-Authors: Youquan Zhang, Aimin Yu, Ke Li, Xiangtai MengAbstract:The [4+3] annulation reaction of Crotonate-derived sulfur ylides with thioaurones has, for the first time, been reported using NaH as the base. A diverse array of 2,5-dihydrobenzo[4,5]thieno[3,2-b]oxepines is obtained in good to excellent yields. The proposed mechanism is investigated and supported by DFT calculations.
Valeriy Shubinets - One of the best experts on this subject based on the ideXlab platform.
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preparation and 2 2 cycloaddition of 1 triisopropylsiloxy 1 hexyne with methyl Crotonate 3 butyl 4 methyl 2 triisopropylsiloxy cyclobut 2 enecarboxylic acid methyl ester
Organic Syntheses, 2011Co-Authors: Valeriy Shubinets, Michael P Schramm, Sergey A KozminAbstract:Methyl Crotonate Triisopropylsilyl trifluoromethanesulfonate Trifluoromethanesulfonanimide Silver carbonate Keywords: Cycloaddition; Triisopropylsiloxy-1-hexyne; MethylCrotonate; Siloxy alkynes; tert-Butyl hydroperoxide; Silylation; 1-Siloxy-1-alkynes; Cycloadditions; Waste disposal
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Organic Syntheses - Preparation and [2+2] Cycloaddition of 1‐Triisopropylsiloxy‐1‐Hexyne with Methyl Crotonate: 3‐Butyl‐4‐Methyl‐2‐Triisopropylsiloxy‐Cyclobut‐2‐Enecarboxylic Acid Methyl Ester
Organic Syntheses, 2010Co-Authors: Valeriy Shubinets, Michael P Schramm, Sergey A KozminAbstract:Methyl Crotonate Triisopropylsilyl trifluoromethanesulfonate Trifluoromethanesulfonanimide Silver carbonate Keywords: Cycloaddition; Triisopropylsiloxy-1-hexyne; MethylCrotonate; Siloxy alkynes; tert-Butyl hydroperoxide; Silylation; 1-Siloxy-1-alkynes; Cycloadditions; Waste disposal
Ling Fang - One of the best experts on this subject based on the ideXlab platform.
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synthesis of bicyclo 4 1 0 tetrahydropyridazines bya sequential 4 2 and 1 2 annulation reaction of azoalkenesand Crotonate derived sulfur ylides
Organic Letters, 2019Co-Authors: Ling Fang, Zhiyong Wang, Zhefeng LiAbstract:The base-induced unprecedented tandem [4 + 2] and [1 + 2] annulation reaction of in situ formed 1,2-diaza-1,3-dienes and Crotonate-derived sulfur ylides is reported. This protocol provides a novel and practical method for the synthesis of cyclopropane-fused tetrahydropyridazines with a quaternary carbon center in synthetically useful yield. In this tandem reaction, three new bonds were formed in one pot, and the Crotonate-derived sulfur ylide serves as a C3 synthon.
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Synthesis of Bicyclo[4.1.0]tetrahydropyridazines bya Sequential [4 + 2] and [1 + 2] Annulation Reaction of Azoalkenesand Crotonate-Derived Sulfur Ylides
Organic Letters, 2019Co-Authors: Ling Fang, Zhiyong Wang, Zhefeng LiAbstract:The base-induced unprecedented tandem [4 + 2] and [1 + 2] annulation reaction of in situ formed 1,2-diaza-1,3-dienes and Crotonate-derived sulfur ylides is reported. This protocol provides a novel and practical method for the synthesis of cyclopropane-fused tetrahydropyridazines with a quaternary carbon center in synthetically useful yield. In this tandem reaction, three new bonds were formed in one pot, and the Crotonate-derived sulfur ylide serves as a C3 synthon.