1.
Org Lett
; 15(22): 5654-7, 2013 Nov 15.
Artigo
em Inglês
| MEDLINE
| ID: mdl-24188109
RESUMO
A new copper-catalyzed oxidative ring closure of ethynyl anilides with diaryliodonium salts was developed for the highly modular construction of benzoxazines bearing a fully substituted exo double bond. The oxidative transformation includes an unusual 6-exo-dig cyclization step with the formation of C-O and C-C bonds.