1.
J Org Chem
; 87(10): 6902-6909, 2022 May 20.
Artigo
em Inglês
| MEDLINE
| ID: mdl-35486449
RESUMO
An NHC-catalyzed [2 + 4] cyclization of alkynyl ester with α,ß-unsaturated ketone to form a pyran scaffold was developed successfully. The cheap and easily available starting materials, mild reaction conditions, moderate to excellent yields, and high atom economy make this strategy attractive for the syntheses of highly substituted 4H-pyran derivatives.
2.
Org Biomol Chem
; 20(6): 1219-1225, 2022 02 09.
Artigo
em Inglês
| MEDLINE
| ID: mdl-35040844
RESUMO
A facile NHC-catalyzed [2 + 4] annulation of allenoates with 2,3-dioxypyrrolidine derivatives was discovered, which paved a new avenue for the construction of highly substituted pyranopyrrole with moderate to good yields, high atom economy and mild reaction conditions.