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DOI | 10.1021/acs.joc.1c01479 |
Cerium Ammonium Nitrate-Mediated Access to Biaryl Lactones: Substrate Scopes and Mechanism Studies | |
Chao, Mianran; Wang, Fang; Xu, Linlin; Ju, Yanping; Chen, Zixuan; Wang, Bin; Gong, Peiwei; You, Jinmao; Jin, Ming; Shen, Duyi | |
通讯作者 | Chao, MAR ; Shen, DY (通讯作者),Qufu Normal Univ, Sch Chem & Chem Engn, Key Lab Life Organ Anal Shandong Prov, Qufu 273165, Shandong, Peoples R China. |
发表日期 | 2021 |
ISSN | 0022-3263 |
EISSN | 1520-6904 |
起始页码 | 13371 |
结束页码 | 13380 |
卷号 | 86期号:19 |
英文摘要 | Herein we described an access to biaryl lactones from ortho-aryl benzoic acids via intramolecular O-H/C-H oxidative coupling with the commonly used cerium ammonium nitrate (CAN) as the one-electron oxidant under a thermal condition. The radical interrupting experiment suggested a radical process, while the kinetic isotope effect (KIE) showed that the C-H cleavage likely was not involved in the rate-determining step. Competitive reactions, especially the strikingly different rho values of Hammett equations, indicated that the reaction rate was more sensitive to the electronic properties on the aryl moiety rather than the carboxylic moiety, which corresponded to the first single electron transfer (SET) step. In addition, the quite negative rho values (-4.7) of the aryl moiety unveiled the remarkable electrophilic nature of the second intramolecular radical addition process, which was also consistent with product yields and regioselectivity. Moreover, control experiments disclosed that the single electron in the third step was also transferred to Ce-IV instead of molecular oxygen. Besides, the possible role of co-solvents trifluoroethanol (TFE) and its influences on the Ce-IV species were discussed. This work elucidated the possible mechanism by proposing the step that had more effects on the total reaction rate and the species that was responsible for the last single electron transfer. |
关键词 | C-H LACTONIZATIONO BOND FORMATIONRADICAL-ADDITIONDEHYDROGENATIVE LACTONIZATIONCATALYZED C(SP(2))-HCARBOXYLIC-ACIDSRATE CONSTANTSOXIDATIONBEHAVIORPOLAR |
语种 | 英语 |
WOS研究方向 | Chemistry |
WOS类目 | Chemistry, Organic |
WOS记录号 | WOS:000704707200015 |
来源期刊 | JOURNAL OF ORGANIC CHEMISTRY (IF:4.745[JCR-2018],4.224[5-Year]) |
来源机构 | 中国科学院西北生态环境资源研究院 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/254612 |
作者单位 | [Chao, Mianran; Wang, Fang; Xu, Linlin; Ju, Yanping; Chen, Zixuan; Gong, Peiwei; You, Jinmao; Jin, Ming; Shen, Duyi] Qufu Normal Univ, Sch Chem & Chem Engn, Key Lab Life Organ Anal Shandong Prov, Qufu 273165, Shandong, Peoples R China; [Wang, Bin] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China; [You, Jinmao] Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Peoples R China |
推荐引用方式 GB/T 7714 | Chao, Mianran,Wang, Fang,Xu, Linlin,et al. Cerium Ammonium Nitrate-Mediated Access to Biaryl Lactones: Substrate Scopes and Mechanism Studies[J]. 中国科学院西北生态环境资源研究院,2021,86(19). |
APA | Chao, Mianran.,Wang, Fang.,Xu, Linlin.,Ju, Yanping.,Chen, Zixuan.,...&Shen, Duyi.(2021).Cerium Ammonium Nitrate-Mediated Access to Biaryl Lactones: Substrate Scopes and Mechanism Studies.JOURNAL OF ORGANIC CHEMISTRY,86(19). |
MLA | Chao, Mianran,et al."Cerium Ammonium Nitrate-Mediated Access to Biaryl Lactones: Substrate Scopes and Mechanism Studies".JOURNAL OF ORGANIC CHEMISTRY 86.19(2021). |
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