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Ag_(2)O/squaramide cocatalyzed asymmetric interrupted Barton-Zard reaction of 8-nitroimidazo[1,2-a]pyridines: 《Science Bulletin》2022年第16期1688-1695,M0004,共9页Qian Wan Chao Zheng Yao-Feng Yuan Shu-Li You; supported by the National Key R&D Program of China(2021YFA1500100);the National Natural Science Foundation of China(21821002,22031012,and 22171282);the Science and Technology Commission of Shanghai Municipality(19590750400 and 21520780100)。; Imidazo[1,2-a]pyridines are present in numerous biologically active compounds as the core structural motif.Herein,we report an asymmetric interrupted Barton-Zard reaction of electron-deficient imidazo[1,2-a]pyridines ...; 关键词：Asymmetric catalysis DEAROMATIZATION Interrupted Barton-Zard reaction Imidazo[1 2-a]pyridine Isocyanoacetates

Stereoselective Ring-Opening Polymerization of rac-Lactide Catalyzed by Squaramide Derived Organocatalysts at Room Temperature被引量：1: 《Chinese Journal of Chemistry》2021年第9期2403-2409,共7页Xiao Jiang Na Zhao Zhibo Li; Financial support received from NSFC(Nos.21704048,22031005);the Department of Science and Technology of Shandong Province(No.ZR2020LFG014);the Taishan Scholars Constructive Engineering Foundation(No.tsqn20161031)is gratefully acknowledged.; Substa ntial progresses have bee n made toward the developme nt of meta I-free catalysts for stereoselective rin g-ope ning polymeriza-tion(ROP)of rac-lactide.Yet the discovery of organic catalysts effective at ambien...; 关键词：Ring-opening polymerization ORGANOCATALYSIS SQUARAMIDE Polymers STEREOSELECTIVE

Heterogeneous catalysts with programmable topologies generated by reticulation of organocatalysts into metal-organic frameworks:The case of squaramide被引量：1: 《Nano Research》2021年第2期458-465,共8页Anna Broto-Ribas Claudia Vignatti Alicia Jimenez-Almarza Javier Luis-Barrera Zahra Dolatkhah Felipe Gandara Inhar Imaz Ruben Mas-Balleste Jose Aleman Daniel Maspoch; the Spanish MINECO(projects RTI2018-095622-B-I00,RTI2018-095038-B-I00);the Catalan AGAUR(project 2017 SGR 238);the ERC under the EU FP7(ER C-Co 615954);European Unions Horizon 2020 research and innovation program under grant agreement No.685727,and European Structural Funds(S2018/NMT-4367).It was alsofunded by the CERCA Program/Generalitat de Catalunya.ICN2 is supported by the Severo Ochoa program from the Spanish MINECO(G rant No.SEV-2017-0706).; A well-established strategy to synthesize heterogeneous,metal-organic framework(MOF)catalysts that exhibit nanoconfinement effects,and specific pores with highly-localized catalytic sites,is to use organic linkers con...; 关键词：reticular chemistry metal-organic frameworks H-bond catalysis SQUARAMIDE Friedel-Cratts epoxide ring-opening

Asymmetric Michael addition reactions catalyzed by a novel upper-rim functionalized calix[4]squaramide organocatalyst: 《Chinese Chemical Letters》2020年第12期3259-3262,共4页Ke Yang Zhiyan Ma Hong-Xiao Tong Xiao-Qiang Sun Xiao-Yu Hu Zheng-Yi Li; the financial support from the National Natural Science Foundation of China(Nos.21572026 and 21702019);Advanced Catalysis and Green Manufacturing Collabo-rative Innovation Center,Changzhou University,and the Priority Academic Program Development of Jiangsu Higher Education Institutions.; A novel upper-rim functionalized calix[4]squaramide organocatalyst bearing bis-squaramide and cyclohexanediamine scaffolds was designed and prepared to catalyse a serial of asymmetric Michael addition of 1,3-dicarbo n...; 关键词：squaramide Supramolecular catalyst Asymmetric catalysis Michael addition Organic synthesis

Synthesis of Benzofuran-fused 1,4-Dihydropyridines via Bifunctional Squaramide-catalyzed Formal [4+2] Cycloaddition of Azadienes with Malononitrile被引量：5: 《Chinese Journal of Chemistry》2018年第12期1130-1134,共5页Zheng GU BO Wu Guo-Fang Jiang Yong-Gui Zhou

Highly Enantioselective Intramolecular Morita-Baylis-Hillman Reaction Catalyzed by Mannose-Based Thiourea-phosphine被引量：1: 《Chinese Journal of Chemistry》2015年第10期1111-1114,共4页Weihong Yang Kui Yuan Hongliang Song Feng Sha Xinyan Wu; The saccharide-based chiral bifunctional thiourea-phosphines were developed as chiral organocatalysts for the intramolecular Morita-Baylis-Hillman reaction of o^-formyl-enones. With only 2 tool% of thiourea-phosphine ...; 关键词：allylic alcohol bifunctional thiourea-phosphine chiral squaramide enantioselective organocatalysis Morita-Baylis-Hillman reaction

C_2-symmetric BINOL-squaramide as efficient organocatalyst for the enantioselective α-amination of 1,3-dicarbonyl compounds with dialkyl azodicarboxylates: 《Chinese Chemical Letters》2015年第6期744-748,共5页Shi Tang Zhi-yong Wang Bin Liu Chun-E.Dong; the Fundamental Research Funds for the Central Universities (No.2042014kf0248) for support of this research; The asymmetric α-amination of 1,3-dicarbonyl compounds with dialkyl azodicarboxylates has been achieved by C2-symmetric BINOL-squaramide bearing multiple hydrogen bond donors to provide the desired products in excell...; 关键词：Asymmetric amination 1 3-Dicarbonyl compound Dialkyl azodicarboxylates

Enantioselective Synthesis of N-Phenyl-dihydropyrano[2,3-c]-pyrazoles via Cascade Michael Addition/Thorpe-Ziegler Type Cyclization Catalyzed by a Chiral Squaramide被引量：1: 《Chinese Journal of Chemistry》2015年第4期418-424,共7页Junhua Li Daming Du; support from the Na-tional Natural Science Foundation of China(Grant No.21272024).; Enantioselective synthesis of biologically active dihydropyrano[2,3-c]pyrazoles has been achieved through a squaramide-catalysed Michael addition/Thorpe-Ziegler type cyclization cascade reaction between arylidenepyra-...; 关键词：ORGANOCATALYSIS SQUARAMIDE HETEROCYCLES Michael addition CYCLIZATION

Enantioselective chlorination of β-keto esters and amides catalyzed by chiral copper(Ⅱ) complexes of squaramide-linked bisoxazoline ligand: 《Chinese Chemical Letters》2014年第11期1479-1484,共6页Sheng-Jian Jia Da-Ming Du; financial support from the National Natural Science Foundation of China(Nos.21072010 and 21272024); Enantioselective chlorination of b-keto esters and amides catalyzed by squaramide-linked bisoxazoline ligand–Cu（OAc）2complexes was investigated. The corresponding chlorinated products were obtained in excellent yie...; 关键词：Asymmetric catalysis Bisoxazoline Squaramide Chlorination b-Keto esters

Enantioselective Construction of Functionalized Thiochromans via Squaramide-Catalyzed Asymmetric Cascade Sulfa-Michael/Michael Addition: 《Chinese Journal of Chemistry》2014年第9期853-858,共6页Yi Yang Daming Du; We are grateful for financial support from the National Natural Science Foundation of China(Grant No.21272024).; An efficient enantioselective cascade sulfa-Michael/Michael addition reaction of trans-3-(2-mercaptophenyl)-2-propenoic acid ethyl ester with nitroalkenes catalyzed by a chiral squaramide catalyst was disclosed.This c...; 关键词：ORGANOCATALYSIS SQUARAMIDE Michael addition thiochromans CASCADE

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