Chemistry Letters p. 1351 - 1354 (1990)
Update date:2022-08-05
Topics:
Setsune, Jun-ichiro
Ischimaru, Yoshihiro
Kitao, Teijiro
N21,N22-(1,2-Diphenyletheno)-meso-tetraphenylporphin hydroperchlorate was reduced by NaBH4 to the 5H-phlorin and deprotonated by NaOH to the free base.However, the N21,N22-hydroxymethyletheno derivative underwent intramolecular attack of the bridge hydroxy group on the 10-meso position to give the novel 10H-phlorin under basic conditions.
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