By FG BADDAR and LANSON S. EL-ASSAL. o-Methoxyphenylmagnesium bromide and succinic anhydride give a mixture of po-methoxybenzoylpropionic acid and y-hydroxy-yy-di- o-methoxyphenylbutyric acid; the latter acid is converted into its lactone when refluxed with alcohol. The lactone gives, when refluxed with concentrated hydrochloric acid, 3: 3-di-o- methoxyphenylprop-2-ene-1-carboxylic acid (IV) which on oxidation with potassium ...
