Boron complexation strategy for use in manipulating...

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

Reexamination Certificate

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C568S006000

Reexamination Certificate

active

07153975

ABSTRACT:
A method of making a metal complex comprises combining a 1-monoacyldipyrromethane with a compound of the formula R1R2MX, wherein M is boron, R1and R2are each independently organic substituents; and X is an anion leaving group; to produce a metal complex of the formula DMR1R2wherein DH is a 1-monoacyldipyrromethane. The methods and complexes are useful for the purification and synthesis of dipyrromethanes and porphyrins.

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U.S. Appl. No. 10/956,781, filed Oct. 2004, Lindsey et al.
Zaidi et al., “9-Acylation of 1-Acyldipyrromethanes Containing a Dialkylboron Mask for the Acylpyyrole Motif,” J. Organic Chem., vol. 69, No. 24, pp. 8356-8365 (2004).
U.S. Appl. No. 10/641,412, filed Aug. 15, 2003, Lindsey et al.
Gryko et al.; “Parallel synthesis ofmeso-substituted corroles andmeso-substituted [22]pentaphyrins(1.1.1.0.0) from diacyldipyrromethanes”J. Porphyrins Phthalocyanines7 239-248 (2003).
Rao et al.; “Rational Synthesis of Porphyrins Bearing up to Four Different Meso Substituents”J. Org. Chem.2000 65, 7323-7344 (2000).
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