نتایج جستجو برای: 2 amino 4h pyrans

تعداد نتایج: 2674731  

2009
Hans-Georg Häcker Florian Grundmann Friederike Lohr Philipp A. Ottersbach Jing Zhou

The synthetic access to 2-sec-amino-4H-3,1-benzothiazin-4-ones 2 was explored. Compounds 2 were available from methyl 2-thioureidobenzoates 1, 2thioureidobenzoic acids 3, and novel 2-thioureidobenzamides 6, respectively, under different conditions. 2-Alkylthio-4H-3,1-benzothiazin-4-ones 5 have been prepared from anthranilic acid following a two step route. Both, benzothiazinones 2 and 5 underwe...

Journal: :Molecules 2009
Hans-Georg Häcker Florian Grundmann Friederike Lohr Philipp A Ottersbach Jing Zhou Gregor Schnakenburg Michael Gütschow

The synthetic access to 2-sec-amino-4H-3,1-benzothiazin-4-ones 2 was explored. Compounds 2 were available from methyl 2-thioureidobenzoates 1, 2-thioureidobenzoic acids 3, and novel 2-thioureidobenzamides 6, respectively, under different conditions. 2-Alkylthio-4H-3,1-benzothiazin-4-ones 5 have been prepared from anthranilic acid following a two step route. Both, benzothiazinones 2 and 5 underw...

Journal: :Journal of the Korean Chemical Society 2013

The green synthesis of 5-(4-aminophenyl)-4-aryl-4H-1,2,4-triazole-3-thiol was achieved in four steps, In first step, 4-amino benzoic acid refluxed in ethanol along with catalyst Conc. Sulphuric acid to produce ethyl-4-amino benzoate I. Further compound I refluxed with hydrazine hydrate in ethanol to produce 4-amino benzohydrazide II. Compound II refluxed in ethanolic potassium hydroxide with ca...

2008
Ren-lin Zheng Wen-qin Zhang Luo-Ting Yu Sheng-Yong Yang Li Yang

The mol-ecule of the title compound, C(10)H(10)N(2)O(2)S, is essentially planar, except for the ethyl group, which is twisted away from the carboxyl plane by -90.5 (3)°. In the crystal structure, mol-ecules are linked into a zigzag sheet propagating along the b axis by inter-molecular N-H⋯O and N-H⋯N hydrogen bonds.

2012
Arun K. Gupta Sumeet Prachand Arpit Patel Sanjay Jain

Abstract Despite the remarkable progress in diagnostic and antifungal drugs research in past 10 years ,still complexity of the characteristics of patients continue to make the management of fungal infection is a great challenge .1,2,4-triazole compounds not only offer an interesting chemistry but also their various derivatives possesses diverse chemotherapeutic activity. The recent literatures ...

Multicomponent condensation of 1-naphthol, malononitrile, and arylglyoxals in the presence of Mg-Al hydrotalcite under solvent-free MicroWave (MW) conditions gave a new series of 2-amino-4-aroyl-4H-benzo[h]chromene-3-carbonitriles in high yields (70-89%). The structure of all products was elucidated by their...

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