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Methyl 2‐benzoylamino‐3‐dimethylamonopropenoate in the synthesis of heterocyclic systems. A simple synthesis of amino derivatives of isomeric naphthopyranones and naphthodipyranones
Author(s) -
Ornik Brina,
Stanovnik Branko,
Tišler Miha
Publication year - 1992
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570290427
Subject(s) - chemistry , pyran , acetic acid , stereochemistry , tetralones , medicinal chemistry , organic chemistry
A simple synthesis of the amino derivatives of 3 H ‐naphtho[2,1‐ b ]pyran‐3‐one 5b‐d, 8,11 , and 20 , 2 H ‐naphtho[1,2‐ b ]pyran‐2‐one 14 and 19 , 2 H ,6 H ‐naphtho[1,2‐ b :3,4‐ b ']dipyran‐2,6‐dione 9 , 2 H ,11 H ‐naphtho[2,1‐ b :3,4‐ b ']dipyran‐2,11‐dione 12 , and 3 H ,9 H ‐naphtho[1,2‐ b :5,6‐ b ']dipyran‐3,9‐dione 15 from the corresponding monohydroxynaphthalenes 2c,d , dihydroxynaphthalenes 2b, 7, 10 , and 13 , and tetralones 16 and 17 with methyl 2‐benzoylamino‐3‐dimethylaminopropenoate (3) in acetic acid is described.