1.
J Org Chem
; 89(12): 8861-8870, 2024 Jun 21.
Artículo
en Inglés
| MEDLINE
| ID: mdl-38845104
RESUMEN
A straightforward synthesis of substituted ß-aminoamides from α-arylamino-ß-hydroxyacrylamides, α-arylamino-ß-oxoamides, or their tautomeric mixture has been described. The (E)-enol triflate intermediates are readily generated in situ from these substrates in the presence of triflic anhydride (Tf2O) and triethylamine (Et3N) in a chemoselective manner and undergo triflic acid (TfOH)-promoted cyclization and ring-opening reactions with alcohols to deliver the desired products. The one-pot two-step synthetic protocol features the use of readily available starting materials, mild reaction conditions, high chemoselectivity, operational simplicity, and a wide range of synthetic potential of the products.