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Your search keyword '"Xiaobao Zeng"' showing total 4 results
Start Over Author "Xiaobao Zeng" Journal chemical communications
4 results on '"Xiaobao Zeng"'

1. One-pot synthesis of 3-trifluoromethylbenzo[b][1,4]oxazines from CF3-imidoyl sulfoxonium ylides with 2-bromophenols

Author

Mingshi Pan, Yixin Tong, Xiaodong Qiu, Xiaobao Zeng, and Biao Xiong

Subjects
Materials Chemistry, Metals and Alloys, Ceramics and Composites, General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

A one-pot two-step fashion for the synthesis of 3-trifluoromethyl-1,4-benzoxazines from CF3-imidoyl sulfoxonium ylides and 2-bromophenols via lithium-bromide-promoted O–H insertion of sulfoxonium ylides and annulation has been demonstrated.

Published
2022
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2. Ruthenium-catalyzed acceptorless dehydrogenative coupling of amino alcohols and ynones to access 3-acylpyrroles

Author

Mingshi Pan, Xiabin Wang, Yixin Tong, Xiaodong Qiu, Xiaobao Zeng, and Biao Xiong

Subjects
Molecular Structure, Materials Chemistry, Metals and Alloys, Ceramics and Composites, Pyrroles, Hydrogenation, General Chemistry, Ketones, Amino Alcohols, Ruthenium, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

Direct synthesis of 3-acylpyrroles via acceptorless dehydrogenative coupling with the merits of high step- and atom efficiency, broad substrate scope, operational simplicity, and water and hydrogen gas as the sole by-products.

Published
2022
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3. N-Sulfonyl acetylketenimine as a highly reactive intermediate for the synthesis of N-sulfonyl amidines

Author

Weiguang Yang, Dayun Huang, Yuefei Hu, Dongping Luo, Xinyan Wang, and Xiaobao Zeng

Subjects
Sulfonyl, chemistry.chemical_classification, 010405 organic chemistry, Reactive intermediate, Metals and Alloys, General Chemistry, 010402 general chemistry, 01 natural sciences, Combinatorial chemistry, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Ketenimine, chemistry.chemical_compound, chemistry, Amide, Materials Chemistry, Ceramics and Composites, Reactivity (chemistry)
Abstract

A highly reactive intermediate N-sulfonyl acetylketenimine was generated from a 3-butyn-2-one participating CuAAC/ring-opening method. Its high reactivity due to bearing two EWGs allowed us to offer the first example of a reaction between ketenimine and amide to synthesize N-sulfonyl amidines efficiently.

Published
2018
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4. A general two-step one-pot synthesis process of ynones from α-keto acids and 1-iodoalkynes

Author

Xiaobao Zeng, Yuefei Hu, Chulong Liu, Weiguang Yang, Xingyong Wang, and Xinyan Wang

Subjects
010405 organic chemistry, Chemistry, One-pot synthesis, Two step, Metals and Alloys, General Chemistry, 010402 general chemistry, Triple bond, 01 natural sciences, Catalysis, Cycloaddition, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Materials Chemistry, Ceramics and Composites, Organic chemistry
Abstract

A general two-step one-pot synthesis process of ynones was developed by cycloaddition of α-keto acids and 1-iodoalkynes followed by a ring-opening reaction. Its easy conditions and novel mechanism endowed it with two distinctive advantages: iodine-atom bonded to C(sp2) remained intact and α-keto acids became a part of the triple bonds in ynones.

Published
2018
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