Optimizing the synthesis of 5,10-disubstituted tripyrromethanes

Condensation of aldehydes with pyrrole in the presence of acid catalyst gave the mixture of dipyrromethanes and tripyrromethanes. The major product was switched from dipyrromethanes to tripyrromethanes according to the sequence of adding the reactants and catalyst. Higher oligomers such as tetrapyrr...

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Bibliographic Details
Published in:Tetrahedron letters 2000-06, Vol.41 (23), p.4609-4613
Main Authors: Ka, Jae-Won, Lee, Chang-Hee
Format: Article
Language:English
Subjects:
dipyrromethane
pentapyrromethane
tetrapyrromethane
tripyrromethane
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Summary:Condensation of aldehydes with pyrrole in the presence of acid catalyst gave the mixture of dipyrromethanes and tripyrromethanes. The major product was switched from dipyrromethanes to tripyrromethanes according to the sequence of adding the reactants and catalyst. Higher oligomers such as tetrapyrromethane and pentapyrromethane were isolated and characterized from the reaction of 4-methoxycarbonylbenzaldehyde with pyrrole.
ISSN:0040-4039
1873-3581
DOI:10.1016/S0040-4039(00)00672-9