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Monatshefte Fur Chemie | 1992

SYNTHESIS OF 4-HYDROXY-4,5-DIHYDRO-1,2,4-TRIAZOL-5-ONES

Aykut A. Ikizler; Kemal Sancak

SummaryA series of hydroxamic acid ethoxycarbonylhydrazides was obtained by reactions of ester ethoxycarbonylhydrazones with hydroxylamine. The corresponding 3-substituted 4-hydroxy-4,5-dihydro-1,2,4-triazol-5-ones were synthesized by cyclization of these hydroxamic acid derivatives in basic medium.ZusammenfassungDurch Reaktion von Esterethoxycarbonylhydrazonen und Hydroxylamin wurde eine Reihe von Hydroxamsäureethoxycarbonylhydraziden gewonnen; Cyclisierung dieser Verbindungen durch Base gab die entsprechenden 3-substituierten 4-Hydroxy-4,5-dihydro-1,2,4-triazol-5-one.


Monatshefte Fur Chemie | 1991

SYNTHESIS OF SOME BENZYLIDENAMINO COMPOUNDS

Aykut A. Ikizler; Aysun Ikizler; Nuri Yildirim

SummaryReactions of 3-substituted-4-amino-4,5-dihydro-1,2,4-triazol-5-ones with salicylaldehyde,o-chlorobenzaldehyde andp-tolualdehyde were studied, and 14 new benzylidenamino compounds were obtained.ZusammenfassungDie Reaktionen von 3-substituierten 4-Amino-4,5-dihydro-1,2,4-triazol-5-onen mit Salicylaldehyd,o-Chlorobenzaldehyd undp-Tolualdehyd wurden untersucht und 14 Benzylidenaminoverbindungen dargestellt.


Monatshefte Fur Chemie | 1992

1H-NMR spectra of some ditriazolyls and ditriazolyalkanes

Aykut A. Ikizler; Haydar Yüksek; Şule Bahçeci

SummaryThe proton magnetic resonance spectra of 12 azoles were measured in neutral and acidic solvents. The protonation shifts observed by comparison of the spectra inDMSO-d6 andTFA were attributed to an amidinium type resonance of the resulting cations. The synthesis and characterization of the azoles are also discussed.ZusammenfassungEs wurden die1H-NMR-Spektren von 12 Azol-Verbindungen in neutralem (DMSO-d6) und azidischem (TFA) Lösungsmittel gemessen und die chemischen Verschiebungswerte verglichen. Der Unterschied beider Werte beruht höchstwahrscheinlich auf einer Amidinium-Typ Resonanz der im azidischen Bereich entstandenen Kationen. Im Rahmen dieser Arbeit wurden 12 Azol-Verbindungen synthetisiert und beschrieben.


Spectroscopy Letters | 1991

MASS SPECTRA OF SOME 1,2,4-TRIAZOLES

Aykut A. Ikizler; Aysun Ikizler; Yunus Erdogan; Mevlüt Serdar

Abstract The electron-impact induced fragmentation of some 4,5-dihydro-1,2,4-triazole derivatives was studied by conventional mass spectrometry. Some major fragment ions observed in the spectra were interpreted and fragmentation patterns involving McLafferty rearrangements were proposed.


Organic Preparations and Procedures International | 1993

ACETYLATION OF 4-AMINO-44-DIHYDRO-1H-1,2,4-TRIAZOL-5-ONES

Aykut A. Ikizler; Haydar Yüksek


Collection of Czechoslovak Chemical Communications | 1995

Reaction of Ester Ethoxycarbonylhydrazones with Aliphatic Diamines

Aykut A. Ikizler; Kemal Sancak


Journal of Heterocyclic Chemistry | 1998

A study on ester formylhydrazones

Aykut A. Ikizler; Nuri Yildirim


Collection of Czechoslovak Chemical Communications | 1994

Reaction of 4-amino-4,5-dihydro-1H-1,2,4-triazol-5-ones with 2,5-dimethoxytetrahydrofuran

Aykut A. Ikizler; Haydar Yüksek


Magnetic Resonance in Chemistry | 1993

1H NMR spectra of some 4,5‐dihydro‐1,2,4‐triazol‐5‐ones

Aykut A. Ikizler; Aysun Ikizler; Haydar Yüksek


Indian Journal of Chemistry Section B-organic Chemistry Including Medicinal Chemistry | 2003

Synthesis of some 4-(arylmethylamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones

Bahittin Kahveci; Olcay Bekircan; Mevluet Serdar; Aykut A. Ikizler

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Aysun Ikizler

Karadeniz Technical University

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Nuri Yildirim

Karadeniz Technical University

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Bahittin Kahveci

Karadeniz Technical University

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Kemal Sancak

Karadeniz Technical University

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Mevlüt Serdar

Karadeniz Technical University

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Aysun Lkizler

Karadeniz Technical University

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Neslihan Uzunismail

Karadeniz Technical University

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Olcay Bekircan

Karadeniz Technical University

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Sule Bahceci

Karadeniz Technical University

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