Green Synthesis and Catalysis最新文献_第3页

Electrochemical enabled desaturated β-C(sp3)-H sulfonylation and phosphonylation of cyclic amines 电化学使环胺的去饱和β-C(sp3)-H磺化和膦化

Green Synthesis and Catalysis Pub Date : 2024-11-01 DOI: 10.1016/j.gresc.2023.11.008

Tao Liu , Jie Lin , Fangjun Xia , Zhenhui Xu , Xuying Xia , Wei Qian , Weihui Zhong , Dingguo Song , Fei Ling

引用次数: 0

Highly enantio-stereoselective Ni-catalyzed reductive cyclization to cyclopentanes with chiral quaternary centres of trisubstituted allylic siloxanes 高对映立体选择性镍催化的三取代烯丙基硅氧烷手性季中心环戊烷还原环化反应

Green Synthesis and Catalysis Pub Date : 2024-11-01 DOI: 10.1016/j.gresc.2023.08.004

Wanjun Chen , Xinlong Yan , Lin Fan , Xu Guo , Jian Yang , Yiming Chen , Shaofang Zhou , Guodu Liu

{"title":"Highly enantio-stereoselective Ni-catalyzed reductive cyclization to cyclopentanes with chiral quaternary centres of trisubstituted allylic siloxanes","authors":"Wanjun Chen , Xinlong Yan , Lin Fan , Xu Guo , Jian Yang , Yiming Chen , Shaofang Zhou , Guodu Liu","doi":"10.1016/j.gresc.2023.08.004","DOIUrl":"10.1016/j.gresc.2023.08.004","url":null,"abstract":"<div><div>The construction of chiral quaternary carbon stereocenters is a significant challenge in asymmetric synthesis. Catalytic synthesis of these structures with trisubstituted allylic alcohols is highly important. However, most of the reported methodologies required noble transition-metals. Herein we reported the first highly asymmetric stereoselective synthesis of cyclopentanes bearing chiral quaternary carbon stereocenters of trisubstituted allylic siloxanes by reductive cyclization of all carbon 1,6-alkynones with the non-noble nickel catalysis of Ni(cod)<sub>2</sub> with <em>P</em>-chiral monophosphine ligand <strong>(<em>S</em>)-BIDIME</strong>. Various multi-substituted functionalized cyclopentanes were obtained in high yields (up to 96%), excellent enantioselectivities (up to >99% <em>ee</em>) and perfect stereoselectivities (>99:1 <em>E/Z</em>). Thirty-two examples were successfully established for this method. Clarified mechanism studies were investigated first time by React-IR and DFT calculations to understand and explain the ligand-control of excellent enantio-stereoselectivity. Gram-scale reaction and control experiments were carried out. A new reaction design was proposed for further application of this type of catalysis.</div></div>","PeriodicalId":12794,"journal":{"name":"Green Synthesis and Catalysis","volume":"5 4","pages":"Pages 282-289"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89588262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transition-metal and base-free ether synthesis via alcohol-participated yne-allylic substitution 醇参与的炔烯取代法合成过渡金属和无碱醚

Green Synthesis and Catalysis Pub Date : 2024-11-01 DOI: 10.1016/j.gresc.2023.10.003

Chao Xu , Yingkun Luo , Shengtong Niu , Fan Gong , Shouang Lan , Benlong Luo , Jinggong Liu , Shuang Yang , Xinqiang Fang

引用次数: 0

Photoinduced decatungstate-catalyzed direct coupling of cycloalkanes and cyclic aldimines 光诱导十钨酸盐催化环烷和环醛胺的直接偶联

Green Synthesis and Catalysis Pub Date : 2024-11-01 DOI: 10.1016/j.gresc.2023.10.002

Jingjing Wang , Feng Li , Kai Liu , Chong Li , Sheng Cao , Yuxiang Wu , Yongjun Yuan , Fei Teng , Teng Wang , Yao Zhou

引用次数: 0

Transition metal-free Csp3-Csp3 bond-forming reactions of N-tosylaziridines and gem-diborylalkanes n - tosyziridine和gem-二硼烷的无过渡金属Csp3-Csp3成键反应

Green Synthesis and Catalysis Pub Date : 2024-11-01 DOI: 10.1016/j.gresc.2023.07.004

Pu-Zhang Zi , Quan-Hong Zhao , Zhan-Cai Ma , Xiao-Lin Ren , Xing-Bang Liu , Yi-Wei Qiao , Lin-Wen Wei , Song Liu , Yuan Huang

引用次数: 0

Photocatalytic selective 1,4-oxyimination/diamination across C=C and N=N bonds to access structurally diverse N-N-N triazane derivatives 跨 C=C 和 N=N 键的光催化选择性 1,4-氧亚氨基化/二氨基化，获得结构多样的 N-N-N 三氮烷衍生物

Green Synthesis and Catalysis Pub Date : 2024-08-02 DOI: 10.1016/j.gresc.2024.07.003

Yu-Shi Jiang, Dan-Na Chen, Huan Jiang, Peng-Ju Xia

引用次数: 0

Rhodium/Ming-Phos-catalyzed asymmetric annulation reaction of silacyclobutanes with terminal alkynes 铑/明磷催化的硅环丁烷与末端炔的不对称环化反应

Green Synthesis and Catalysis Pub Date : 2024-08-01 DOI: 10.1016/j.gresc.2023.09.001

引用次数: 0

N-Doped graphene fiber anchored Pd nanoparticles as a fixed-bed catalyst for continuous-flow reduction of N-containing unsaturated compounds 掺杂 N 的石墨烯纤维锚定钯纳米颗粒作为固定床催化剂用于连续流还原含 N 的不饱和化合物

Green Synthesis and Catalysis Pub Date : 2024-08-01 DOI: 10.1016/j.gresc.2023.08.003

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引用次数: 0

Iridium-Catalyzed asymmetric reduction of α,β-Unsaturated nitriles with water 铱催化的α、β-不饱和腈与水的不对称还原反应

Green Synthesis and Catalysis Pub Date : 2024-08-01 DOI: 10.1016/j.gresc.2023.07.002

引用次数: 0

Metal- and light-free approach to polyheterocycles via a quinone-Cs2CO3 couple promoted regioselective cascade radical cyclization 通过醌-铯-Cs2CO3偶联物促进区域选择性级联自由基环化的无金属、无光多杂环方法

Green Synthesis and Catalysis Pub Date : 2024-08-01 DOI: 10.1016/j.gresc.2023.04.001

引用次数: 0