A Facile and Convenient Synthetic Method for Fluorine-containing 1,2-Dihydropyrimidines and Pyrimidines
摘要:
beta, beta-Bis(trifluoroacetyl)vinylamine (1) reacted easily with various aliphatic and aromatic aldehydes in the presence of aqueous ammonia under mild conditions to give 5-trifluoroacetyl-4-trifluoromethyl-1,2-dihydropyrimidines (2) in good yields. Dehydrogenation of 2 with DDQ afforded the corresponding pyrimidines (3) in excellent yields.
A Facile and Convenient Synthetic Method for Fluorine-containing 1,2-Dihydropyrimidines and Pyrimidines
摘要:
beta, beta-Bis(trifluoroacetyl)vinylamine (1) reacted easily with various aliphatic and aromatic aldehydes in the presence of aqueous ammonia under mild conditions to give 5-trifluoroacetyl-4-trifluoromethyl-1,2-dihydropyrimidines (2) in good yields. Dehydrogenation of 2 with DDQ afforded the corresponding pyrimidines (3) in excellent yields.