- Synthesis, Conformation, and Complexation Behavior of 2,9,18,25-Tetraoxa(1,4)naphthalenophane
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The synthesis of the title compound is described.Evidence is presented for its preferential "face-edge" conformation.Charge-transfer complexation proves to be a classical ?-? interaction with the "face-edge"conformation.There is no evidence for inclusion complexation.Attempted synthesis of substituted analogues of the title compound is described, including novel transformations in the 1,2,4-trisubstituted and 1,2,3,4-tetrasubstituted naphthalene series.
- Adams, Steven P.,Whitlock, Howard W.
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- Method for producing 1,4-dihydroxy-2-naphthoic acid
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A method for producing 1,4-dihydroxy-2-naphthoic acid which comprises the steps of: subjecting 1,4-dihydroxynaphthalene into an alkali metal salt formation reaction in an organic medium capable of dissolving 1,4-dihydroxynaphthalene using an alkali metal alcoholate; and subjecting the salt formation reaction mixture to carboxylation using carbon dioxide gas.
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- SYNTHESIS AND REVISED STRUCTURE OF THE O-SUCCINYLBENZOIC ACID COENZYME A ESTER, AN INTERMEDIATE IN MENAQUINONE BIOSYNTHESIS
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Synthesis of the two isomers 2, 3 of the mono coenzyme A ester of o-succinylbenzoic acid (1, OSB, i.e. 4-(2-carboxyphenyl)-4-oxobutanoic acid) and enzymic conversion of 3 to 1,4-dihydroxy-2-naphtoic acid 7 shows that as opposed to previous assumptions the "aliphatic" rather than the"aromatic" carboxyl group in o-succinylbenzoic acid 1 is activated during vitamin K2 biosynthesis in Escherichia coli and Myobacterium phlei.
- Kolkmann, R.,Leistner, E.
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p. 1703 - 1704
(2007/10/02)
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