Synthesis of Enol Lactones of 3-Aroyl-2-(thienylmethylene)-propionic Acids and their Conversion into the Corresponding 4-Arylbenzothiophene-6-carboxylic Acids
Heterocyclic aldehydes such as 2-thiophenecarbaldehyde (1) condense with 3-aroylpropionic acids 2 or their sodium salts to give the enol lactones 3a-d of 3-aroyl-2-(2-thienylmethylene)propionic acids.Isomerization of 3a-d leads to the corresponding 4-aryl
Guirguis, Nadia R.,Awad, Boshra M.,Saad, Hanaa A.
p. 1003 - 1011
(2007/10/02)
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