Synthesis of Thiourea and Thioamide S-Oxides via SO Transfer from a Thiirane S-Oxide onto N-Heterocyclic Carbenes.
Org Lett
; 26(27): 5868-5872, 2024 Jul 12.
Article
en En
| MEDLINE
| ID: mdl-38949383
ABSTRACT
Thiourea S-oxides are labile compounds that suffer from a quick overoxidation when directly prepared from thioureas. Therefore, we have developed an alternative route on the basis of the SO transfer from a thiirane S-oxide onto sterically encumbered N-heterocyclic carbenes, including imidazole- and imidazoline-ylidenes, and a cyclic alkyl amino carbene. Reaction conditions and DFT computations suggest a concerted SO transfer mechanism. Thiourea S-oxides are nucleophiles adding to dimethyl acetylenedicarboxylate under fission of the S-O bond.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Org Lett
Asunto de la revista:
BIOQUIMICA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Estados Unidos