Transformation of 2-(beta,beta-Dicarbomethoxyethyl)-furan into m-Hydroxybenzoic Acid.
نویسندگان
چکیده
منابع مشابه
5-(Hydroxymethyl)furan-2-carboxylic acid
In the title compound, C(6)H(6)O(4), the furan ring is nearly coplanar with the carboxyl group, the maximum atomic deviation being 0.0248 (9) Å. The crystal packing is stabilized by classical O-H⋯O and weak C-H⋯O hydrogen bonding.
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In the title mol-ecule, C(15)H(12)O(3), the two six-membered and one five-membered fused-ring system is almost planar and the CH(2)C(=O)OH residue is essentially orthogonal to it. In the crystal structure, centrosymmetric dimers are formed via the carboxylic acid {⋯O=C-O-H}(2) synthon.
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The energetics of the phenolic O-H bond in the three hydroxybenzoic acid isomers and of the intramolecular hydrogen O-H- - -O-C bond in 2-hydroxybenzoic acid, 2-OHBA, were investigated by using a combination of experimental and theoretical methods. The standard molar enthalpies of formation of monoclinic 3- and 4-hydroxybenzoic acids, at 298.15 K, were determined as Delta(f)(3-OHBA, cr) = -593....
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1956
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.10-1664