ChemInform Abstract: DISPROPORTIONIERUNGSREAKTIONEN VON 1,5‐DIKETONEN MIT SAEUREN

Харченко, В. Г.; Chalaya, S. N.; Chichenkova, L. G.; Tatarinov, A. S.

doi:10.1002/chin.197519262

Chemischer Informationsdienst

1975

DOI: 10.1002/chin.197519262

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ChemInform Abstract: DISPROPORTIONIERUNGSREAKTIONEN VON 1,5‐DIKETONEN MIT SAEUREN

В. Г. Харченко¹,

S. N. Chalaya²,

L. G. Chichenkova³

et al.

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2008

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“…2,4-diphenyl-7,8-benzo-5,6-dihydrochromene (2) (59%) is formed together with the salt 3a, and this is probably due to the concurrent simple dehydration of the product from semi-ketalization of the diketone 1a according to the usual mechanism [7]. It is not possible to isolate benzohexahydrochromene, which makes it possible to link salt formation to oxidative aromatization by the action of atmospheric oxygen according to the following scheme: ..…”

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Electronic absorption spectra of pyrylium and benzodihydrochromenylium salts

Буров

Пчелинцева

Федотова

2008

Chem Heterocycl Comp

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The electronic absorption spectra of benzodihydrochromenylium, tetrahydrochromenylium, and dichloropyrylium salts were studied for the first time. It was noticed that intramolecular charge transfer takes place mainly between the substituent at position 4 of the pyrylium ring and the π-system of the cation as a whole, while the bathochromic shift depends substantially on the geometry of the molecule. It was shown that the chlorine atoms have an effect on the form of the spectra when they are introduced into the ring of the pyrylium cation and into the aryl substituents.

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mentioning

confidence: 99%

Electronic absorption spectra of pyrylium and benzodihydrochromenylium salts

Буров

Пчелинцева

Федотова

2008

Chem Heterocycl Comp

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ChemInform Abstract: DISPROPORTIONIERUNGSREAKTIONEN VON 1,5‐DIKETONEN MIT SAEUREN

Cited by 1 publication

References 0 publications

Electronic absorption spectra of pyrylium and benzodihydrochromenylium salts

Electronic absorption spectra of pyrylium and benzodihydrochromenylium salts

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