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Your search keyword '"Jia, Zhihong"' showing total 11 results
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11 results on '"Jia, Zhihong"'

1. ChemInform Abstract: Expedient Catalytic Construction of Azabicyclo[4.1.0]/[5.1.0] Carbaldehydes via Intramolecular Cyclopropanation

Author

Jing Cao, Xian-Hua Pan, Pan Jiang, Chang Chen, Ke Xu, Hua-Dong Xu, Jia Zhihong, and Mei-Hua Shen

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, Double bond, chemistry, Cyclopropanation, Stereochemistry, Intramolecular force, chemistry.chemical_element, General Medicine, Carbene, Rhodium, Catalysis
Abstract

Three types of aza-bicycles, 3-azabicylo[4.1.0]heptane-6-carbaldehyde, 3-azabicylo[4.1.0]heptane-1-carbaldehyde, and 3-azabicyclo[5.1.0]octane-7-carbaldehyde, are constructed conveniently from corresponding carbene progenitors of N-allyl or N-homoallyl triazoles. Yields are modest to high. These transformations feature a key rhodium catalyzed intramolecular cyclopropanation of the pendent C–C double bond and show complete stereo specificity.

Published
2015

3. ChemInform Abstract: Ring-Strain-Driven Catalytic Carbene Formation-Cyclopropanation-Aza-Cope Rearrangement Cascade: A Facile Entry to Fused Dihydroazepines from 1,3-Dienyltriazoles

Author

Jia Zhihong, Hua-Dong Xu, Xiao-Long Lu, Mei-Hua Shen, Ke Xu, Hao Wu, and Hao Zhou

Subjects
chemistry.chemical_compound, Organic reaction, Chemistry, Cyclopropanation, Stereochemistry, Yield (chemistry), Aza-Cope rearrangement, General Medicine, Carbene, Carbenoid, Catalysis, Ring strain
Abstract

A practical method for a facile entry to structurally unique ring-fused dihydroazepine has been developed using 1-sulfonyl-1,3-dienyltriazole as starting materials. Driven by ring strain release of cyclopropyl group, a rhodium-catalyzed α-imino carbenoid formation–cyclopropanation–aza-Cope rearrangement cascade takes place efficiently in a single operation. Substitution effects on yield and diastereoselectivity are also explored.

Published
2015

4. ChemInform Abstract: One-Pot Protocol to Functionalized Benzopyrrolizidine Catalyzed Successively by Rh2(OAc)4and Cu(OTf)2: A Transition Metal-Lewis Acid Catalysis Relay

Author

Jia Zhihong, Ke Xu, Mei-Hua Shen, Hao Zhou, and Hua-Dong Xu

Subjects
Transition metal, Chemistry, Relay, law, General Medicine, Combinatorial chemistry, Catalysis, Lewis acid catalysis, law.invention
Abstract

A new method for the efficient synthesis of structurally unique N-heterocycle benzopyrrolizidine is developed.

Published
2015

5. ChemInform Abstract: Copper-Catalyzed Cyclization/Aza-Claisen Rearrangement Cascade Initiated by Ketenimine Formation: An Efficient Stereocontrolled Synthesis of α-Allyl Cyclic Amidines

Author

Ke Xu, Hua-Dong Xu, Jing Cao, Jia-Cheng Wang, Jia Zhihong, Sai-Nan Jiang, Mei Han, and Mei-Hua Shen

Subjects
Claisen rearrangement, chemistry.chemical_compound, Cascade reaction, chemistry, Cascade, organic chemicals, Copper catalyzed, food and beverages, General Medicine, Medicinal chemistry, Pyrrole derivatives, Ketenimine
Abstract

The novel cascade reaction of amino enynes with azides allows the synthesis of a wide range of α-allylic amidines in high yields.

Published
2015

10. ChemInform Abstract: Solvothermal Synthesis of Complex Fluorides KCoF3and KNiF3.

Author

Hua, Ruinian, Jia, Zhihong, Xie, Demin, and Shi, Chunshan

Abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Published
2002
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11. ChemInform Abstract: The Mild Hydrothermal Synthesis of Complex Fluorides of AZnF3(A: Na, K).

Author

Li, Hong, Jia, Zhihong, and Shi, Chunshan

Abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Published
2001
Full Text
View/download PDF

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