3WILLIAMS F J,RELLKS H M,DONAHUK FE,et al.A dirt;cl synthe- sis of phenoxy-substituted phthalic anhydrides by aromatic nucleophilic displacement[J].J Org Chem,1977,42(21):3425-3431.
4BOGERT M T,RENSHAW R R.On dimethyl 4-aminopiilhaiate and certain of its acyl derivatives[J].Chem J Am Soc,1906,28(5):617-624.
5DANISHEFSKY S1KITAHARA T.Useful diene for the Diels-Alder re- action[J].J Am Chem Soc,1974,96(25):7807-7808.
