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- Title
Asymmetric (4+n) Cycloadditions of Indolyldimethanols for the Synthesis of Enantioenriched Indole‐Fused Rings.
- Authors
Zhang, Jia‐Yi; Chen, Jia‐Yi; Gao, Cong‐Hui; Yu, Lei; Ni, Shao‐Fei; Tan, Wei; Shi, Feng
- Abstract
Catalytic asymmetric construction of chiral indole‐fused rings has become an important issue in the chemical community because of the significance of such scaffolds. In this work, we have accomplished the first catalytic asymmetric (4+2) and (4+3) cycloadditions of 2,3‐indolyldimethanols by using indoles and 2‐naphthols as suitable reaction partners under the catalysis of chiral phosphoric acids, constructing enantioenriched indole‐fused six‐membered and seven‐membered rings in high yields with excellent enantioselectivities. In addition, this approach is used to realize the first enantioselective construction of challenging tetrahydroindolocarbazole scaffolds, which are found to show promising anticancer activity. More importantly, theoretical calculations of the reaction pathways and activation mode offer an in‐depth understanding of this class of indolylmethanols. This work not only settles the challenges in realizing catalytic asymmetric cycloadditions of indolyldimethanols but also provides a powerful strategy for the construction of enantioenriched indole‐fused rings.
- Subjects
FRIEDEL-Crafts reaction; RING formation (Chemistry); ENANTIOSELECTIVE catalysis; ANTINEOPLASTIC agents; INDOLE compounds; INDOLE
- Publication
Angewandte Chemie, 2023, Vol 135, Issue 37, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202305450