- Enamino derivatives of 1,3-dioxoindane-2-carboxylic acid
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(Chemical Equation Presented) Although 1,3-dioxoindane-2-carboxylic acid is highly unstable, its enamino derivatives can be isolated by careful hydrolysis of their esters with 2,4-dihydroxy-1,4-naphthoquinone. Crystal structure determination reveals the formation of two intramolecular hydrogen bonds, offering thus a possible explanation for the stability of these acids.
- Malamidou-Xenikaki, Elizabeth,Spyroudis, Spyros,Tsanakopoulou, Maria,Krautscheid, Harald
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experimental part
p. 8392 - 8397
(2009/04/11)
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- Dimethyldioxirane oxidation of hydroquinones into quinones and 2,3-dihydroxycyclohexene-1,4-diones
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Dehydrogenation of hydroquinones 1 by dimethyldioxirane affords quinones 2 and oxygen transfer the novel 2,3-dihydroxycyclohexene-1,4-diones 3; an electron transfer mechanism is proposed for these oxidations.
- Adam,Schonberger
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