1.
Org Lett
; 22(7): 2702-2706, 2020 Apr 03.
Article
in English
| MEDLINE
| ID: mdl-32174117
ABSTRACT
Unprecedented three-dimensional 1,2,6-thiadiazine 1-oxides have been prepared by an aza-Michael-addition/cyclization/condensation reaction sequence starting from sulfonimidamides and propargyl ketones. The products have been further functionalized by standard cross-coupling reactions, selective bromination of the heterocyclic ring, and conversion into a ß-hydroxy substituted derivative. A representative product was characterized by single-crystal X-ray structure analysis.