Article ID Journal Published Year Pages File Type
5226625 Tetrahedron 2006 10 Pages PDF
Abstract

Using their amide (and pyrrole) groups, dipyrrinones act as hydrogen bonding receptors for carboxylic acids, as found in a large number of 10-oxo-semirubins (1-6). The latter can be synthesized readily by Friedel-Crafts coupling of 9-H dipyrrinones with half-ester acid chlorides or diacid dichlorides of α,ω-dicarboxylic acids, ranging from C2 to C10. With ω-oxo-alkanoic acid chains of C5 or ≥C5, intramolecular hydrogen bonding is observed. With acid chains

Graphical abstractA series of dipyrrinones (1-6) with varying lengths of ω-oxo-alkanoic acid chains attached to C(9) display hydrogen bonding between the CO2H and dipyrrinone lactam and pyrrole.Download full-size image

Related Topics
Physical Sciences and Engineering Chemistry Organic Chemistry
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