Synthesis

2, 3-Diazaporphyrins Bearing Two Nitrogen Atoms at the Periphery

R Böhme, E Breitmaier

文献索引：Boehme, Roswitha; Breitmaier, Eberhard Synthesis, 1999 , # 12 p. 2096 - 2102

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被引用次数: 8

摘要

Abstract: The first synthesis of 2, 3-diazaporphyrins 3 bearing two nitrogen atoms at peripheral positions from tripyrranes 1, prepared in situ by mild acidolysis and decarboxylation of the di-t-butyldicarboxylates, and 4H-1, 2, 4-triazol-3, 5-dicarbaldehyde (2) is described, using the [3+ 1] principle of porphyrine cyclization. Similar to the parent porphyrins, the new diazaporphyrins 3 exhibit significantly shielded inner protons, ...