Copper(ii)-promoted oxidative C–H/C–H cross-coupling for rapid access to aza-BODIPY-indole derivatives with broad optical absorption

Abstract

The direct C–H activation of electron-deficient aza-BODIPYs has been effectively achieved via a concise and inexpensive Cu(II)-promoted oxidative C–H/C–H coupling approach. The resulting indole-aza-BODIPY 6b covers a broad spectrum of 429–900 nm with a FWHM of 294 nm in solution and covers a UV-vis-NIR region up to 1100 nm in film.