G. Kumaran et Gh. Kulkarni, NON-LITHIATION ROUTE TO NATURALLY-OCCURRING 5,7-DIMETHOXYPHTHALIDE, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 34(5), 1995, pp. 436-437
A non-lithiation route has been described for the synthesis of natural
ly occurring 5,7-dimethoxyphthalide (10) starting from ethyl orsellina
te (1) involving simple reactions and less expensive reagents.