Kn. Josemin,"nirmala et Cv. Asokan, REACTIONS OF 1-ARYL-2-PROPANONES WITH CHLOROMETHYLENEIMINIUM SALT, Tetrahedron letters, 38(48), 1997, pp. 8391-8394
A synthesis of 3-formyl-4-pyrones by Vilsmeier-Haack reaction of subst
ituted benzyl methyl ketones has been reported. The reaction of benzyl
ethyl ketone with chloromethyleneimimium salt gave corresponding 4-py
rone while phenoxy acetone gave N,N-dimethylamino substituted pentadie
naldehyde. (C) 1997 Elsevier Science Ltd.