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Synthesis of 3-unsubstituted 2-benzopyrylium salts

โœ Scribed by I. V. Shcherbakova; V. G. Brovchenko; E. V. Kuznetsov


Book ID
112355194
Publisher
Springer US
Year
1984
Tongue
English
Weight
73 KB
Volume
20
Category
Article
ISSN
0009-3122

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๐Ÿ“œ SIMILAR VOLUMES


2-Benzopyrylium salts. 34. Reactions of
โœ Yu. A. Zhdanov; V. G. Brovchenko; M. A. Klyuev; E. V. Kuznetsov ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Springer US ๐ŸŒ English โš– 510 KB

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 ketols are demethylated through the intermediate