Synthesis 2023; 55(14): 2195-2205
DOI: 10.1055/a-2038-2323
paper

Late-Stage Two-Step C11–H Arylation of Dibenzooxa/thiazepines

Yang Chen
,
Meng-Yao Ma
,
Hongguang Du
,
Jiaxi Xu
,
Zhanhui Yang
This work was financially supported by the Beijing Natural Science Foundation (no. 2202041 to Z.Y.) and the Fundamental Research Funds for the Central Universities (no. XK1802-6 to Z.Y. and J.X.; no. 12060093063 to Z.Y.).


Abstract

A practical and efficient synthesis of 11-aryldibenzooxa/thiazepines is achieved, via a late-stage and two-step C11–H arylation of simple dibenzooxa/thiazepines. The adoption of Grignard addition and DDQ dehydrogenation allows for operationally simple and chemically reliable, step-efficient, and high-yielding transformations. The two-step and one-pot procedures provide excellent yields. The gram-scale experiment demonstrates the promising synthetic potentials in large-scale applications, and the advantages of this method are also highlighted in the efficient synthesis of an H460TaxR inhibitor.

Supporting Information



Publication History

Received: 23 January 2023

Accepted after revision: 17 February 2023

Accepted Manuscript online:
17 February 2023

Article published online:
12 April 2023

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