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氨基酸衍生的硫脲-有机膦/铜催化不对称(3+2)环加成和动力学拆分
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作者 余龙辉 潘仁明 +2 位作者 刘俊 郑昌武 赵刚 《中国科学:化学》 CAS CSCD 北大核心 2023年第3期572-578,共7页
过去十年中,硫脲-有机膦通过有机膦或双试剂催化模式已被广泛用于各种不对称反应的催化体系中.本文通过氨基酸衍生的膦-硫脲配体和金属铜盐结合发展了一种协同催化策略,并且用于不对称(3+2)环加成和动力学拆分中,以高产率(83%~96%)和良... 过去十年中,硫脲-有机膦通过有机膦或双试剂催化模式已被广泛用于各种不对称反应的催化体系中.本文通过氨基酸衍生的膦-硫脲配体和金属铜盐结合发展了一种协同催化策略,并且用于不对称(3+2)环加成和动力学拆分中,以高产率(83%~96%)和良好的对映选择性(49%~93%ee)高效地合成了一系列吡唑啉酮化合物.进一步进行了机理研究,并制备了具有催化活性Cu(Ⅰ)物种的晶体,为铜离子与膦-硫脲的相互作用进行了有价值的探索. 展开更多
关键词 协同催化 硫脲-有机膦 (3+2)环加成 动力学拆分 铜催化
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Bifunctional Ion Pair Catalysts from Chiral a-Amino Acids 被引量:2
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作者 Hongyu Wang changwu zheng Gang Zhao 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2019年第11期1111-1119,共9页
What is the most favorite and original chemistry developed in your research group?Our research focuses on the field of asymmetric organocatalysis and natural product synthesis.Our work draws upon and impacts the desig... What is the most favorite and original chemistry developed in your research group?Our research focuses on the field of asymmetric organocatalysis and natural product synthesis.Our work draws upon and impacts the design and synthesis of N-and P-containing bifunctional ion pair catalysts from a-amino acids,and their applications as organocatalysts or ligands in asymmetric synthesis. 展开更多
关键词 synthesis. ASYMMETRIC organo
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Organophosphine bearing multiple hydrogen-bond donors for asymmetric Michael addition reaction of 1-oxoindane-2-carboxylic acid ester via dual-reagent catalysis 被引量:1
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作者 Haoran Hong Hongyu Wang +2 位作者 changwu zheng Gang Zhao Yongjia Shang 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第2期708-712,共5页
Multiple hydrogen bonds containing nucleophilic phosphines derived from dipeptide dual-reagents catalyzed asymmetric Michael addition reactions between indene esters and activated olefins in high yields and good to ex... Multiple hydrogen bonds containing nucleophilic phosphines derived from dipeptide dual-reagents catalyzed asymmetric Michael addition reactions between indene esters and activated olefins in high yields and good to excellent enantioselectivities under mild reaction conditions.The success of current highly selective reactions should provide inspiration for expansion to other reactions and would open up new paradigms for the synthesis of indanone derivatives bearing chiral quaternary carbon centers. 展开更多
关键词 Dual-reagent catalysis Michael addition reaction Multiple hydrogen bonds Chiral quaternary carbon centers
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