p. 2353 - 2357
(2007/10/03)trichloro-acetic acid-(1-ethoxy-4,4,4-trichloro-3-oxo-but-1-enyl ester)
ethanol
Triethyl orthoacetate
trifluoroacetyl chloride
Ketene
ethyl 1-benzyl-5-(2-hydroxybenzoyl)-2-oxo-1,2-dihydropyridine-3-carboxylate
ethyl 2-oxo-2H-furo[3,2-g]chromene-3-carboxylate
ethyl 6-(4-chlorophenyl)-2-oxo-2H-chromene-3-carbocylate
ethyl 7-(benzyloxy)-2-oxo-2H-chromene-3-carboxylate
7-methoxycoumarin-3-carboxylic acid ethyl ester