Issue 97, 2023

Synthesis of 3-aminotetrahydro-1H-carbazols by visible-light photocatalyzed cycloaddition of cyclopropylanilines with 2-alkenylarylisocyanides

Abstract

A visible-light-induced cycloaddition between 2-alkenylarylisocyanides and cyclopropylanilines is reported. This cascade radical reaction constructs two new C–C bonds and two rings to afford 3-aminotetrahydro-1H-carbazols with high atom and step economy. The mechanism is rationalized as involving sequential distonic radical cation formation/isocyanide insertion/5-exo-trig cyclization/intramolecular iminium ion addition/tautomerization.

Graphical abstract: Synthesis of 3-aminotetrahydro-1H-carbazols by visible-light photocatalyzed cycloaddition of cyclopropylanilines with 2-alkenylarylisocyanides

Supplementary files

Article information

Article type
Communication
Submitted
20 Sep 2023
Accepted
12 Nov 2023
First published
13 Nov 2023

Chem. Commun., 2023,59, 14423-14426

Synthesis of 3-aminotetrahydro-1H-carbazols by visible-light photocatalyzed cycloaddition of cyclopropylanilines with 2-alkenylarylisocyanides

X. Zhang, Y. Wang, J. Liu, C. Tian, X. Li, P. Xie, Z. Zhu and T. Yao, Chem. Commun., 2023, 59, 14423 DOI: 10.1039/D3CC04674E

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