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Your search keyword '"Hai-bing Li"' showing total 4 results
Start Over Author "Hai-bing Li" Journal chemical communications
4 results on '"Hai-bing Li"'

1. Copper-catalyzed oxidative oxyalkylation of enol ethers with α-amino carbonyl compounds and hydroperoxides

Author

Wen-Ting Wei, Jin-Heng Li, Ren-Jie Song, and Hai-Bing Li

Subjects
chemistry.chemical_classification, Alkene, Metals and Alloys, Regioselectivity, General Chemistry, Oxidative phosphorylation, Enol, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, chemistry, Materials Chemistry, Ceramics and Composites, Copper catalyzed, Organic chemistry
Abstract

A new copper-catalyzed oxidative difunctionalization of enol ethers with α-amino carbonyl compounds and hydroperoxides is developed. This method is experimentally simple while allowing for regioselective access to 2-amino-3,4-dioxy carbonyl compounds in good yields, and represents the first example of alkene oxyalkylation through C(sp(3))-H functionalization.

Published
2015
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2. Oxidative radical 1,2-alkylarylation of alkenes with α-C(sp3)–H bonds of acetonitriles involving 1,2-aryl migration

Author

Hai-Bing Li, Jin-Heng Li, Qiu-An Wang, Bang Liu, and Yang Li

Subjects
chemistry.chemical_classification, Allylic rearrangement, Acetonitriles, Double bond, Stereochemistry, Alkene, Aryl, Metals and Alloys, General Chemistry, Oxidative phosphorylation, Medicinal chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, chemistry, Materials Chemistry, Ceramics and Composites, Molecule, Oxidative coupling of methane
Abstract

A novel metal-free oxidative 1,2-alkylarylation of unactivated alkenes with the α-C(sp(3))-H bonds of acetonitriles for the synthesis of 5-oxo-pentanenitriles is presented. In the presence of TBPB (tert-butyl peroxybenzoate), a variety of α-aryl allylic alcohols underwent the 1,2-alkylarylation reaction with acetonitriles, giving 5-oxo-pentanenitriles in good to excellent yields. This method proceeds via the C(sp(3))-H oxidative coupling with the C-C double bond and 1,2-aryl-migration, and represents a new access to acyclic molecules through metal-free oxidative alkene 1,2-alkylarylation.

Published
2015
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3. Oxidative radical 1,2-alkylarylation of alkenes with α-C(sp³)-H bonds of acetonitriles involving 1,2-aryl migration.

Author

Yang Li, Bang Liu, Hai-Bing Li, Qiuan Wang, and Jin-Heng Li

Subjects
OXIDATIVE coupling kinetics, CARBON-hydrogen bonds, ACETONITRILE oxidation, PALLADIUM catalyst reactivity, CHEMICAL yield, ARYL group
Abstract

A novel metal-free oxidative 1,2-alkylarylation of unactivated alkenes with the α-C(sp³)-H bonds of acetonitriles for the synthesis of 5-oxopentanenitriles is presented. In the presence of TBPB (tert-butyl peroxybenzoate), a variety of α-aryl allylic alcohols underwent the 1,2-alkylarylation reaction with acetonitriles, giving 5-oxopentanenitriles in good to excellent yields. This method proceeds via the C(sp³)-H oxidative coupling with the C-C double bond and 1,2-aryl-migration, and represents a new access to acyclic molecules through metal-free oxidative alkene 1,2-alkylarylation. [ABSTRACT FROM AUTHOR]

Published
2015
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4. Oxidative coupling of alkenes with amides using peroxides: selective amide C(sp³)-H versus C(sp²)-H functionalization.

Author

Xu-Heng Yang, Wen-Ting Wei, Hai-Bing Li, Ren-Jie Song, and Jin-Heng Li

Subjects
OXIDATIVE coupling, ALKENES, AMIDES, PEROXIDES, CHEMOSELECTIVITY
Abstract

A new oxidative coupling of unactivated terminal alkenes with amides using peroxides is described, in which mono- and difunc-tionalization of alkenes are selectively achieved. In this reaction with amides, the chemoselectivity toward the functionalization of the C(sp³)-H bonds adjacent to the nitrogen atom or the functionalization of the carbonyl C(sp²)-H bonds across alkenes relies on the reaction conditions. [ABSTRACT FROM AUTHOR]

Published
2014
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