C-phosphorylation of 5,10-dimethyl-5,10-dihydrophenazine and its carbo- and heteroanalogs

Autor: Aleksandr M. Pinchuk, Viktor N. Serdyuk, Sergei P. Ivonin, Svetlana D. Kopteva, Andrei A. Tolmachev
Rok vydání: 2001
Předmět:
Zdroj: Heteroatom Chemistry. 12:652-657
ISSN: 1098-1071
1042-7163
DOI: 10.1002/hc.1098
Popis: This study covers phosphorylation of heterocyclic analogues of N-methyldiphenylamine with phosphorus tribromide in pyridine solution. The reaction is found to proceed regioselectively in accordance with the orienting effect of the amino group. Mono and bis-phosphorylated derivatives of the heterocycles have been isolated and characterized. It is pointed out that the heterocyclic systems under study exhibit reduced reactivity in electrophilic phosphorylation as compared to N-methyldiphenylamine. The results of calculations by the PM3 method are reported for the starting molecules and their σ-complexes. © 2001 John Wiley & Sons, Inc. Heteroatom Chem 12:652–657, 2001
Databáze: OpenAIRE