Sunlight-mediated [3+2] cycloaddition of azobenzenes with arynes: an approach toward the carbazole skeleton

A sunlight-mediated [3 + 2] cycloaddition of azobenzenes with arynes that are in situ generated from ortho-(trimethylsilyl)phenyl triflates has been developed in the absence of transition metals or photocatalysts. This strategy provides an alternative method for the efficient construction of the carbazole backbone.

Automated summary

A sunlight-mediated [3 + 2] cycloaddition reaction between azobenzenes and aryne precursors generated from ortho-(trimethylsilyl)phenyl triflates has been successfully developed, offering an efficient method for the construction of the carbazole backbone without the need for transition metals or photocatalysts.