CLXI.—Resolution of dl-trans-cyclopentane-1 : 3-dicarboxylic acid
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چکیده
منابع مشابه
Low-temperature redetermination of trans-cyclohexane-1,2-dicarboxylic acid
The mol-ecule of the title compound, C(8)H(12)O(4), lies on a twofold rotation axis that passes through the mid-points of two opposite C-C bonds of the ring. Carboxyl groups of adjacent mol-ecules are linked by pairs of hydrogen bonds around a centre of inversion; this inter-action gives rise to a chain that runs along [101].
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In the title co-crystal, C(22)H(14)O(4)·CH(4)N(2)O, the 1,1'-binaphthyl-2,2'-dicarboxylic acid (BNDA) and urea mol-ecules are connected via a system of hydrogen bonds into a chiral two-dimensional polymeric structure parallel to the (001) plane. As the crystal is centrosymmetric, it consists of alternately stacked BNDA-urea layers of opposite chirality. The urea H atoms trans to the C=O group a...
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Dehydroascorbic acid is shown to be converted to 2-(threo-l,2,3-trihydroxypropyl)tartronic acid in aqueous alkaline solutions. The structure of the acid was determined by mass spectrometry of its acyclic Me3Si derivative. Mass spectrometric and chromatographic data are compared with those of related compounds. The acid is formed by a benzilic acid rearrangement of the intermediate 2,3-hexodiulo...
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The title compound, DL-threonine-arsenic acid (1/1), C4H9NO3.H3AsO4, is an unusual adduct containing zwitterionic threonine and neutral arsenic acid molecules. The component species interact by way of N-H...O and O-H...O hydrogen bonds, leading to parallel [001] chains of threonine and arsenic acid molecules which are crosslinked by further O-H...O and N-H...O bonds, resulting in a three-dimens...
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ژورنال
عنوان ژورنال: J. Chem. Soc., Trans.
سال: 1921
ISSN: 0368-1645
DOI: 10.1039/ct9211901400