Tetrahedron Letters p. 197 - 200 (1996)
Update date:2022-08-03
Topics: Yield Chromatography Porphyrins Reaction Conditions Spectroscopic Analysis Stepwise syntheses Core-modified Meso-substituted
Heo, Phil-Yeon
Shin, Koo
Lee, Chang-Hee
Simple conditions are discovered to afford modified tripyrrin derivatives by condensation of 2,5-bis(α-hydroxymethyl)pyrrole, thiophene and furan derivatives with pyrrole in the presence of acid catalyst. The core-modified porphyrins were synthesized by acid catalyzed 3+1 condensation of modified tripyrrins with 2,5-bis(α-hydroxymethyl)-substituted pyrrole, thiophene or furan. This new process gives a single porphyrin isomer and overcomes the synthetic problems associated with separation and purification of regioisomeric mixtures.
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