The Experts below are selected from a list of 234 Experts worldwide ranked by ideXlab platform
Shuang-feng Yin - One of the best experts on this subject based on the ideXlab platform.
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Phosphorous Acid Promoted Hydration–Condensation of Aromatic Alkynes with Aldehydes Affording Chalcones in an Oil/Water Two-Phase System
Synthesis, 2015Co-Authors: Yongbo Zhou, Li Zhongwen, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
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Phosphorous Acid promoted hydration condensation of aromatic alkynes with aldehydes affording chalcones in an oil water two phase system
Synthesis, 2015Co-Authors: Yongbo Zhou, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
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metal and oxidant free synthesis of quinazolinones from β ketoesters with o aminobenzamides via Phosphorous Acid catalyzed cyclocondensation and selective c c bond cleavage
Journal of Organic Chemistry, 2015Co-Authors: Jianyu Dong, Yongbo Zhou, Xiuling Chen, Shuang-feng YinAbstract:A general and efficient Phosphorous Acid-catalyzed cyclocondensation of β-ketoesters with o-aminobenzamides via selective C–C bond cleavage leading to quinazolinones is developed. This reaction proceeds smoothly under metal- and oxidant-free conditions, giving both 2-alkyl- and 2-aryl-substituted quinazolinones in excellent yields. This strategy can also be applied to the synthesis of other N-heterocycles, such as benzimidazoles and benzothiazoles.
Yongbo Zhou - One of the best experts on this subject based on the ideXlab platform.
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Phosphorous Acid promoted isomerization of propargyl alcohols to α,β-unsaturated carbonyl compounds
Tetrahedron Letters, 2019Co-Authors: Xiaotang Gan, Lixin Liu, Yani Yan, Chao Chen, Yongbo Zhou, Jianyu DongAbstract:Abstract A metal-free and two-phase protocol for the Meyer-Schuster isomerization of propargyl alcohols to the corresponding α,β-unsaturated carbonyl compounds has been achieved in the presence of stoichiometric Phosphorous Acid aqueous solution, which produces the desired products in high yields with excellent stereoselectivity. Compared with the traditional methods, the procedure features broad scope of the substrates, mild conditions, and easy separation, providing an appealing alternative to the Meyer-Schuster reaction.
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Phosphorous Acid Promoted Hydration–Condensation of Aromatic Alkynes with Aldehydes Affording Chalcones in an Oil/Water Two-Phase System
Synthesis, 2015Co-Authors: Yongbo Zhou, Li Zhongwen, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
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Phosphorous Acid promoted hydration condensation of aromatic alkynes with aldehydes affording chalcones in an oil water two phase system
Synthesis, 2015Co-Authors: Yongbo Zhou, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
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metal and oxidant free synthesis of quinazolinones from β ketoesters with o aminobenzamides via Phosphorous Acid catalyzed cyclocondensation and selective c c bond cleavage
Journal of Organic Chemistry, 2015Co-Authors: Jianyu Dong, Yongbo Zhou, Xiuling Chen, Shuang-feng YinAbstract:A general and efficient Phosphorous Acid-catalyzed cyclocondensation of β-ketoesters with o-aminobenzamides via selective C–C bond cleavage leading to quinazolinones is developed. This reaction proceeds smoothly under metal- and oxidant-free conditions, giving both 2-alkyl- and 2-aryl-substituted quinazolinones in excellent yields. This strategy can also be applied to the synthesis of other N-heterocycles, such as benzimidazoles and benzothiazoles.
Tieqiao Chen - One of the best experts on this subject based on the ideXlab platform.
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Phosphorous Acid Promoted Hydration–Condensation of Aromatic Alkynes with Aldehydes Affording Chalcones in an Oil/Water Two-Phase System
Synthesis, 2015Co-Authors: Yongbo Zhou, Li Zhongwen, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
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Phosphorous Acid promoted hydration condensation of aromatic alkynes with aldehydes affording chalcones in an oil water two phase system
Synthesis, 2015Co-Authors: Yongbo Zhou, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
Xiulin Chen - One of the best experts on this subject based on the ideXlab platform.
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Phosphorous Acid Promoted Hydration–Condensation of Aromatic Alkynes with Aldehydes Affording Chalcones in an Oil/Water Two-Phase System
Synthesis, 2015Co-Authors: Yongbo Zhou, Li Zhongwen, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
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Phosphorous Acid promoted hydration condensation of aromatic alkynes with aldehydes affording chalcones in an oil water two phase system
Synthesis, 2015Co-Authors: Yongbo Zhou, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
Xiao Yang - One of the best experts on this subject based on the ideXlab platform.
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Phosphorous Acid Promoted Hydration–Condensation of Aromatic Alkynes with Aldehydes Affording Chalcones in an Oil/Water Two-Phase System
Synthesis, 2015Co-Authors: Yongbo Zhou, Li Zhongwen, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.
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Phosphorous Acid promoted hydration condensation of aromatic alkynes with aldehydes affording chalcones in an oil water two phase system
Synthesis, 2015Co-Authors: Yongbo Zhou, Xiao Yang, Xiulin Chen, Tieqiao Chen, Shuang-feng YinAbstract:A simple and environmentally benign method was developed for the synthesis of chalcones in high to excellent yields by a Phosphorous Acid promoted alkyne–aldehyde hydration–condensation in an oil/water two-phase system. The method is the first efficient protocol for the preparation of chalcones that is mediated by a simple Bronsted Acid in a two-phase system.