A complete 1H and 13C NMR data assignment for 3-phenylmethylene-1H,3H-naphtho-[1,8-c,d]-pyran-1-one
Complete assignments of the 1H and 13C NMR chemical shifts for 3-phenylmethylene-1H,3H-naphtho-[1,8-c,d]-pyran-1-one were done by means of one- and two-dimensional NMR techniques, including 1H- 1H COSY, HMQC and
Penchev, Plamen N.,Stoyanov, Neyko M.,Marinov, Marin N.
experimental part
p. 559 - 565
(2011/03/17)
Synthesis of Fused Benzofuranes by Dehydratation of Cyclic Phenyl-β-dicarbonyl Compounds
3-Hydroxy-3-phenyl-quinoline-2,4-diones (1) cyclize on treatment with strong acids to give benzofuroquinolones (3).In analogy, 2-hydroxy-2-phenylphenalenedione (7) furnishes the benzofurophenalenone 10. - Keywords: Benzofuranes; Phenyl-β-dicarbonyl compou
Kappe, Thomas,Brandner, Alexander,Stadlbauer, Wolfgang
p. 1177 - 1184
(2007/10/02)
Reactions of Naphthalic Anhydride with β-Benzoylpropionic Acid and Hippuric Acid
Naphthalic anhydride undergoes condensation with β-benzoylpropionic acid and hippuric acid to give α-naphthal-γ-phenyl-crotonolactone (I) and 4-naphthal-2-phenyl-5-oxazolone (II), respectively.Condensation of I and II with aldehydes gives the corresponding arylidenenaphthalides (V) while with hydrazine hydrate and benzylamine, aminonaphthalimide (III) and N,N'-dibenzylnaphthalamide (IV) respectively are formed.
El-Maghraby, M. A.,Koraiem, A. I. M.
p. 73 - 74
(2007/10/02)
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