Green Synthesis and Catalysis (Nov 2024)

Visible-light-induced radical-cascade alkylation/cyclization of N-methacryloyl-2-phenylbenzimidazole: Access to benzoimidazo[2,1-a]isoquinolin-6(5H)-ones

  • Yanhong Wang,
  • Xinlei Zhou,
  • Tao Zhang,
  • Xinxin Ren,
  • Wei Xu,
  • Bin Wang,
  • Weiwei Jin,
  • Yu Xia,
  • Chenjiang Liu,
  • Yonghong Zhang

Journal volume & issue
Vol. 5, no. 4
pp. 319 – 323

Abstract

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A metal-free visible-light-induced synthesis of aza-polycyclic aromatic hydrocarbons via cascade alkylation/cyclization of N-methacryloyl-2-phenylbenzimidazole was developed. The reaction was carried out with inactive alkanes and cyclic ethers as alkylation reagents, and phenanthrenequinone (PQ) as a direct hydrogen-atom transfer (HAT) photocatalyst. The desired products were obtained in moderate to good yields at room temperature under air.

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