Chemistry of Heterocyclic Compounds p. 1310 - 1312 (1990)
Update date:2022-08-02
Topics:
Tolkunov, S. V.
Voshchula, V. N.
Zemskaya, E. A.
Dulenko, V. I.
Under acid catalyzed acylation 3-acetamidobenzofuran, -benzothiophene, and -indole undergo heterocyclization to condensed 1,3-oxazinium salts.Treatment of the salts with ammonium acetate in acetic acid gives the corresponding benzofurano- and ben
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