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Visible-Light-Driven, Photocatalyst-Free Cascade to Access 3-Cyanoalkyl Coumarins from ortho-Hydroxycinnamic Esters.
Hu, Yuan-Zhuo; Ye, Zhi-Peng; Xia, Peng-Ju; Song, Dan; Li, Xu-Jie; Liu, Zhi-Lin; Liu, Fang; Chen, Kai; Xiang, Hao-Yue; Yang, Hua.
Afiliação
  • Hu YZ; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Ye ZP; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Xia PJ; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China.
  • Song D; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Li XJ; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Liu ZL; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Liu F; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Chen K; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Xiang HY; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
  • Yang H; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
J Org Chem ; 86(5): 4245-4253, 2021 Mar 05.
Article em En | MEDLINE | ID: mdl-33606932
ABSTRACT
A visible-light-driven, photocatalyst-free route starting from easily accessed ortho-hydroxycinnamic esters and O-perfluoropyridin-4-yl oximes has been successfully developed to rapidly assemble a wide range of 3-cyanoalkyl coumarins. This process does not require addition of external photocatalysts, exhibiting beneficial features including mild reaction conditions, synthetic simplicity, and excellent substrate compatibility. Extensive mechanistic investigations revealed that the in situ generated phenolate anions served as photosensitizers to drive this photoinduced transformation.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article