1.
Org Lett
; 22(16): 6562-6567, 2020 08 21.
Artigo
em Inglês
| MEDLINE
| ID: mdl-32806199
RESUMO
Described herein is the sequential 1,3-N- to C- and 1,3-C- to C-migration of sulfonyl groups through the synthesis of 1,4-diazepines from an operationally simple thermal aza-[5 + 2] cycloaddition reaction of indoloazomethine ylides with dialkyl acetylenedicarboxylates under mild conditions, leading to the formation of C-sulfonylated 1,4-diazepines.