CHEMICAL PROPERTIES OF YLIDENE DERIVATIVES OF AZINES. 4. STRUCTURES OF THE PRODUCTS OF PROTONATION AND TRANSFORMATION OF DIHYDROAZINYLIDENECYANOACETIC ESTERS IN CONCENTRATED SULFURIC ACID

DOI: 10.1007/BF00509712

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Chemistry of Heterocyclic Compounds p. 801 - 807 (1990)

Update date:2022-07-29

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Authors:

Oleinik, I. V.

Zagulyaeva, O. A.

Denisov, A. Yu.

Mamaev, V. P.

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Article abstract of DOI:10.1007/BF00509712

It was demonstrated by UV and 13C NMR spectroscopy that in concentrated sulfuric acid ylidene derivatives of dihydropyridine (Ia) and dihydropyridazine (IIa) have aromatic structures Ib and IIb, while derivatives of dihydropyrimidines IIIa and IVa, dihydr

Full text of DOI:10.1007/BF00509712

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