Base Promotion and Intramolecular Catalysis in Acetal Hydrolysis. Reaction of o-Hydroxybenzaldehyde Diethyl Acetal.
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چکیده
منابع مشابه
Erythromycin A 11,12-methylene acetal.
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The reaction of trifluoroacetaldehyde N,O-acetal derivatives with 2 molar equivalents of alkyllithium reagents proceeded viabeta-elimination of fluoride followed by alkyl transfer from excess alkyllithium to the generated ketene N,O-acetal intermediate at the beta-carbon of fluorine groups.
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Feulgen and Rossenbeck (1) demonstrated in 1924 in the cytoplasm of cells the presence of substances which give histochemically a color reaction with Schiff’s aldehyde reagent. Feulgen and Voit (2) at the same time showed that the aldehyde group of these substances is not free, but bound in a labile form. The authors called this substance plasmalogen. Feulgen and Bersin (3) succeeded in 1939 in...
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Feulgen and Bersin (1) obtained from the hydrolysis products of the acet>al phospholipide present in muscle a mixture of thiosemicarbazones. They suggested that these thiosemicarbazones are derivatives of pahnitic and stearic aldehydes, although t,hey gave no analytical data supporting this view. Anchel and Waelsch (2) obtained from hydrolysates of lipide mixtures from different tissues, includ...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1974
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.28a-0442