Modification of β-positions in porphyrazines by substitution reactions
2000 ◽
Vol 04
(05)
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pp. 555-563
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Keyword(s):
Peripheral modification of the porphyrazine macrocycle is an important synthetic approach to β-substituted porphyrazine derivatives, especially those which cannot be obtained via direct template cyclotetramerization of maleodinitriles and other similar synthons. The paper presents the last results of the systematical investigation of the reactivity of unsubstituted porphyrazine (tetraazaporphine) in the reactions of electrophilic and radical substitution in pyrrole rings (bromination, chlorination, chloromethylation, nitration and sulfonation) and nucleophilic substitution reactions of chloro-, bromo- and sulfo-substituted porphyrazines.
1975 ◽
Vol 40
(14)
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pp. 2037-2042
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2006 ◽
Vol 36
(11)
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pp. 1479-1484
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1995 ◽
Vol 60
(20)
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pp. 6592-6594
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1974 ◽
Vol 96
(10)
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pp. 3255-3261
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