Yuan Zhang

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Name: 张元; Zhang, Yuan

Organization: Lanzhou University , China

Department: College of Chemistry and Chemical Engineering

Title: Associate Professor(PhD)

TOPICS

Organic Chemistry

Polymer

Stimuli Responsive Polymers PH Responsive Polymers Stimuli Responsive Polymers Photo Responsive Polymers PH Responsive Polymers

Chemicals
References

Mg(ClO4)2-promoted [4 + 3] cycloaddition of oxindole derivatives with conjugated dienes: concise synthesis of spirocycloheptane oxindole derivatives

Co-reporter:Yun Liu, Zhou Sun, Song Li, Kuirong Xiang, Yuan Zhang and Ying Li

RSC Advances 2016 vol. 6(Issue 32) pp:26954-26958

Publication Date(Web):04 Mar 2016

DOI:10.1039/C6RA03259A

We herein reported a novel Mg(ClO4)2-promoted intermolecular [4 + 3] cycloaddition reaction of oxindole derivatives and cyclopentadiene. This new strategy provides a convenient approach to the concise synthesis of a series of spirocycloheptane oxindole derivatives, with moderate to good yields and high diastereoselectivities.

Visible-Light-Induced Photocatalytic Aerobic Oxidative Csp3–H Functionalization of Glycine Derivatives: Synthesis of Substituted Quinolines

Co-reporter:Xiaorong Yang, Liqi Li, Ying Li, and Yuan Zhang

The Journal of Organic Chemistry 2016 Volume 81(Issue 24) pp:12433-12442

Publication Date(Web):November 18, 2016

DOI:10.1021/acs.joc.6b02683

A visible-light induced photocatalytic aerobic oxidative dehydrogenative coupling/aromatization tandem reaction of glycine esters with unactivated alkenes has been accomplished. This visible light-driven protocol has been successfully applied to a broad scope of glycine esters and simple alkenes, giving rise to diverse substituted quinoline derivatives in 18–84% yield under mild (at room temperature under air atmosphere) and operationally simple reaction conditions.

TMSI-Promoted Vinylogous Michael Addition of Siloxyfuran to 2-Substituted Chromones: A General Approach for the Total Synthesis of Chromanone Lactone Natural Products

Co-reporter:Jie Liu, Zhanchao Li, Pei Tong, Zhixiang Xie, Yuan Zhang, and Ying Li

The Journal of Organic Chemistry 2015 Volume 80(Issue 3) pp:1632-1643

Publication Date(Web):January 5, 2015

DOI:10.1021/jo502571r

A concise and facile synthetic protocol for the construction of the 2-γ-lactone chromanone skeleton has been achieved through a TMSI-promoted diastereoselective vinylogous Michael addition of siloxyfuran to 2-substituted chromones. The applicability of this method is demonstrated through the rapid access to the total syntheses of (±)-microdiplodiasone, (±)-lachnone C, and (±)-gonytolides C and G.

A Self-Supported Polymeric MacMillan Catalyst for Homogeneous Organocatalysis and Heterogeneous Recycling

Co-reporter:Chang An Wang;Dr. Yuan Zhang;Dr. Jiao Yi Shi ;Dr. Wei Wang

Chemistry – An Asian Journal 2013 Volume 8( Issue 6) pp:1110-1114

Publication Date(Web):

DOI:10.1002/asia.201300152

Synthesis of 2-Aminobenzothiazoles via Copper(I)-Catalyzed Cross-Coupling with Part-Per-Million Catalyst Loadings

Co-reporter:Ya-Lei Sun;Xiao-Hui Cui ;Wei Wang

Advanced Synthesis & Catalysis 2011 Volume 353( Issue 7) pp:1174-1178

Publication Date(Web):

DOI:10.1002/adsc.201100054

Abstract

An efficient protocol has been developed for the preparation of 2-aminobenzothiazoles via a copper(I)-catalyzed tandem reaction of 2-iodoanilines with isothiocyanates at very low catalyst loadings [typically 50 ppm of copper(I) iodide (CuI)]. A variety of 2-iodoanilines could be cross-coupled with isothiocyanates, affording 2-aminobenzothiazoles in moderate to good yields (49–93%) under the given conditions. The turnover number (TON) of this reaction reaches 67,000 and the reaction could be scaled up, at least, to the gram-scale.