Chemistry of Heterocyclic Compounds p. 375 - 380 (1989)
Update date:2022-07-30
Topics:
Zhdanov, Yu. A.
Brovchenko, V. G.
Klyuev, M. A.
Kuznetsov, E. V.
3-Carboxy-2-benzopyrylium salts form 3-carboxyisoquinolinium salts, their decarboxylated analogs, or products of contraction of the heterocycle, namely, cyclic ketols, depending on the nature of the amine and solvent.Upon treatment with acids, these ketol
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