A convenient preparation of 2,3,5,6-tetrafluoro-4-iodo-benzaldehyde and its application in porphyrin synthesis
2004
Abstract An efficient synthesis of 2,3,5,6-tetrafluoro-4-iodo-benzaldehyde ( 1 ) is presented. This new compound was readily obtained via iodination at low temperature of the lithio derivative of 2-(2,3,5,6-tetrafluoro-phenyl)-[1,3]dioxolane ( 4 ). The crystal structure of 1 consists of linear polymeric chains, with non-covalent O⋯I bonding as the directing interaction, responsible for the observed assembly. Aldehyde 1 is further employed in the synthesis of 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin ( 6 ), a potential precursor of supramolecular assemblies.
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