نتایج جستجو برای: hydrazine hydrate

تعداد نتایج: 9812  

2016
Mohammad R. Ahmed Khalid M. Mohammad Mahmoud H. Mahmoud

This research, involved synthesis of a series of new compound containing different derivatives. The synthesis involved treatment of 6methyl 2-thiouracil with chloroacetyl chloride to give 1chloroacetyl 6methyl 2-thiouracil (1) .The product was treat with hydrazine hydrate to give 2( aceto hydrazide ) thiouracil (2), and with phenyl hydrazine to give phenyl hydrazide thiouracil (13). The new der...

Majid M. Heravi Mehdi Bakavoli Zohreh Sadjadi Hashemi

6-Methyl-2-phenyl-7H-Oxazolo [3,2-b] [1,2,4] triazine (1) undersent ting transformation on treatment with ammonia and primary amines to afford the corresponding imidazol [1,2-b][1,2,4] triazine (2). Treatment of (1) with hydrazine hydrate gave the corresponding 3-aryl-4H-1,2,4- triazino [4,3-b][1,2,4] triazin-8 (1H)-one (3).

Journal: :Chemical communications 2011
Jianhua Shen Yihua Zhu Cheng Chen Xiaoling Yang Chunzhong Li

A facile hydrazine hydrate reduction of graphene oxide (GO) with surface-passivated by a polyethylene glycol (PEG) method for the fabrication of graphene quantum dots (GQDs) with frequency upconverted emission is presented. And we speculate on the upconversion luminescence due to the anti-Stokes photoluminescence (ASPL), where the δE between the π and σ orbitals is near 1.1 eV.

2013
Sameh A. Rizk

Azalactone 1 can be synthesized via treatment of 4chlorobenzoyl glycine with p-anisaldehyde in the presence of acetic anhydride and sod Acetate. The behaviour of azalactone 1 towards nitrogen nucleophiles, for example, anthranilic acid, 6-aminopyrimidin-2,4-dione and 2-amino-6-phenyl 1,3,4thiadiazole can be investigated. Benzoxazone 2 can be treated with hydrazine hydrate, hydroxylamine hydroch...

Journal: :Molecules 2009
Abdul Jabar Kh Atia

New imidazole ring derivatives comprising 1,3-oxazoline, Schiff's bases, thiadiazole, oxadiazole and 1,2,4-triazole moieties are reported. 3-Aminobiimidazol-4-one compounds 7a-c were synthesized by the reaction of compounds 6a-c with hydrazine hydrate. Biimidazole esters 9a-c were converted into biimidazole hydrazide esters 10a-c. Compounds 7a-c and 10a-c were converted into a variety of deriva...

Journal: :Molecules 2007
Samar A Abubshait

Reaction of 4-anthracen-9-yl-4-oxo-but-2-enoic acid (1) with indole gave the corresponding butanoic acid 2. Cyclocondensation of 2 with hydrazine hydrate, phenyl hydrazine, semicarbazide and thiosemicarbazide gave the pyridazinone derivatives 3a-d. Reaction of 3a with POCl(3) for 30 min gave the chloropyridazine derivative 4a, which was used to prepare the corresponding carbohydrate hydrazone d...

2015
Sethurajan Ambethkar Vediappen Padmini Nattamai Bhuvanesh

An efficient grinding protocol for the synthesis of dihydropyrano[2,3-c]pyrazole derivatives from acetylene ester, hydrazine hydrate, aryl aldehydes and malononitrile under solvent free conditions has been achieved with excellent yields. The structures of the synthesized compounds were deduced by spectroscopic techniques and the compounds were further evaluated for their in vitro antioxidant an...

2009
Yan-Xia Zhang Zhi-Qiang Shi

The title compound, C(8)H(9)N(5)O, was synthesized by the reaction of ethyl 2-(benzotriazol-1-yl)acetate with hydrazine hydrate in ethanol. In the amide group, the C-N bond is relatively short [1.3283 (16) Å], suggesting some degree of electronic delocalization in the mol-ecule. In the crystal structure, mol-ecules are linked into infinite chains along the a axis by inter-molecular O-H⋯N hydrog...

Journal: :Molecules 2016
Majid M Heravi Mansoureh Daraie

A novel one pot synthesis of pyrazolo[4',3':5,6]pyrido[2,3-d]pyrimidine-diones, via a five-component reaction, involving, hydrazine hydrate, ethyl acetoacetate, and 1,3-dimethyl barbituric acid, an appropriate aryl aldehydes and ammonium acetate catalyzed via both of heterogeneous and homogeneous catalysis in water, is reported.

2014
Xiao-Guang Bai Xiao-Yu Yang Ju-Xian Wang

The title compound, C14H28N2O5S, was synthesized by the reaction of 2-[(methyl-sulfan-yl)meth-yl]oxirane with di-tert-butyl oxalate in hydrazine hydrate. In the crystal, mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into supra-molecular chains propagating along the b-axis direction.

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