... Corral, A. Lasso, J. Lissavetzky and AM Valdeolmillos Vol. 22 Methyl 3-hydroxythiophene-2- carboxylate [3] was obtained according to the literature. ... REFERENCES AND NOTES [1] С Corral, A. Lasso, J. Lissavetzky and AM Valdeolmillos, /. Heterocyclic Chem., 22, (1985). ...