Vilsmeier–Haack reaction of tertiary alcohols: formation of functionalised pyridines and naphthyridines
作者:Ajith Dain Thomas、Chitoorthekkathil V. Asokan
DOI:10.1039/b105634b
日期:2001.10.11
which on ammonium acetate-induced cyclisation afford 4-arylnicotinaldehydes in good yields. Tertiary alcohols derived from aliphatic or alicyclic ketones by the addition of methyl Grignard are converted into substituted pyridines and naphthyridines by the action of Vilsmeier's reagent in N,N-dimethylformamide followed by nucleophile-assisted cyclisation in the presence of ammonium acetate.