Geometric synthesis of porphyrin rods

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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Reexamination Certificate

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07939656

ABSTRACT:
A method of making a compound of Formula I′comprises reacting a compound of the formula DLCHO, with a compound of the formulato produce the compound of Formula I′. Methods of using the compounds are also described, particularly as intermediates for the synthesis of porphyrin rods, which porphyrin rods are in turn useful for (among other things) the production of molecular memory devices.

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Thamyongkit, P, et al., Alkylthio unit as an α-pyrrole protecting group for use in dipyrromethane synthesis, J. Org. Chem. (2006) 903-910, 71.
Setsune, J and Hashimoto, M, Synthesis and separation of meso-tetraarylporphyrins withC1symmetry, J. Chem. Soc., Chem. Commun. (1994) 657-658.
Setsune, J, et al., Synthesis and atropisomerism ofmeso-tetraarylporphyrins with mixedmeso-aryl grops havingortho-substituents, Tetrahedron (1998) 1407-1424, 54.
International Search Report and Written Opinion for corresponding International Application PCT/US/06/46024 (Mar. 12, 2007).

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