Adamanthylazoles: VII. Acid-catalyzed Adamanthylation of C-C- and C-N-Linked Azopyrazoles
摘要:
Acid-catalyzed N-adamanthylation of C-C-linked pyrazolyl- and tetrazolylpyrazoles in H3PO4-AcOH (4:1) or H2SO4 involves, depending on conditions, one or both rings. The mutual effect of the rings is weak. C-N-Linked azolylpyrazoles are a conjugated system, and the formation of N-adamanthyl derivatives is strongly affected by the second azolyl ring.
Adamanthylazoles: VII. Acid-catalyzed Adamanthylation of C-C- and C-N-Linked Azopyrazoles
摘要:
Acid-catalyzed N-adamanthylation of C-C-linked pyrazolyl- and tetrazolylpyrazoles in H3PO4-AcOH (4:1) or H2SO4 involves, depending on conditions, one or both rings. The mutual effect of the rings is weak. C-N-Linked azolylpyrazoles are a conjugated system, and the formation of N-adamanthyl derivatives is strongly affected by the second azolyl ring.
Synthesis of 1- and 5-(pyrazolyl)tetrazole amino and nitro derivatives
作者:Igor L. Dalinger、Alexandr V. Kormanov、Irina A. Vatsadze、Olga V. Serushkina、Tatyana K. Shkineva、Kyrill Yu. Suponitsky、Alla N. Pivkina、Aleksei B. Sheremetev
DOI:10.1007/s10593-017-2003-2
日期:2016.12
5-tetrazole substituent at position 3(5). All the possible isomeric C-mononitropyrazoles were synthesized. The reduction of these compounds gave the respective 3(5)-amino-5(3)-tetrazolylpyrazoles, which were nitrated to 3(5)-nitramino-4-nitro-5(3)-tetrazolylpyrazoles. The reaction of 1-(nitropyrazol-3(5)-yl)tetrazoles with hydroxylamine-O-sulfonic acid produced the respective N-amino derivatives.
Synthesis of new 2-substituted 6,8-dinitro[1,2,4]triazolo[1,5-a]pyridines
作者:Maxim A. Bastrakov、Alexey M. Starosotnikov、Ivan V. Fedyanin、Igor L. Dalinger
DOI:10.1007/s10593-021-02873-y
日期:2021.1
A number of new 2-substituted 6,8-dinitro[1,2,4]triazolo[1,5-a]pyridines containing explosophoric groups or their precursors were synthesized based on reactions of the commercially available 2-chloro-3,5-dinitropyridine with 5-(hetaryl)tetrazoles or through modification of aryl substituent to 2-aryl-6,8-dinitrotriazolo[1,5-a]pyridine.
基于可商购的2-氯-3,5的反应,合成了许多新的2-取代的6,8-二硝基[1,2,4]三唑并[1,5- a ]吡啶并具有疏液基团或它们的前体。 -二硝基吡啶与5-(杂芳基)四唑或通过将芳基取代基修饰为2-芳基-6,8-二硝基三唑并[1,5- a ]吡啶。