نتایج جستجو برای: phenyl hydrazine

تعداد نتایج: 27849  

Journal: :Molecules 2012
Siham Abdulrahman Al-Issa

The reaction of 4-methyl-2-phenyl-1,2-dihydro-6-oxo-5-pyridine- carbonitrile (1) with arylidene malononitrile afforded isoquinoline derivatives 2a,b. 6-Chloro-4-methyl-2-phenyl-5-pyridinecarbonitile (3) obtained by chlorination of compound 1 with phosphoryl chloride was converted into 6-amino-4-methyl-2-phenyl-5-pyridinecarbonitrile (4) and 6-hydrazido-4-methyl-2-phenyl-5-pyridinecarbonitrile (...

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...

2011
Satish Chandra Gupta Deo Kumar Mandal Asha Rani Anup Sahay Satya Murti Prasad

The previous crystallographic studies [Wang et al. (2005 ▶). Huaxue Yanjiu16, 29-32; Wang et al. (2007 ▶). Youji Huaxue, 27, 524] of the title compound, C(12)H(14)N(2)O(3), gave only the unit-cell dimensions and an R factor with no other details available: the full structure is presented here. The eth-oxy group is disordered over two orientations with refined occupancies of 0.642 (15):0.358 (15...

2010
Vinod P. Singh Shweta Singh

The title compound, C(15)H(15)N(3)O, was obtained by a condensation reaction between o-amino-acetophenone and benzoyl hydrazine. The mol-ecule displays an E configuration about the C=N bond. Intra-molecular N-H⋯N hydrogen bonds are formed between the 2-amino-phenyl and imine groups. In the crystal, dimers are formed between mol-ecules linked by inter-molecular N-H⋯O hydrogen bonds from the 2-am...

Different acid chlorides (2a-d) reacted with anthranilic acid to produce 2-substituted-3, 1-benzoxazin-4-one (3a-d) which was used as starting material to synthesize some condensed and non-condensed heterocyclic compounds by reaction with nitrogen nucleophiles e.g., hydrazine hydrate, and formamide. Some of the newly synthesized analogues were chosen to evaluate their cytotoxic activity against...

Different acid chlorides (2a-d) reacted with anthranilic acid to produce 2-substituted-3, 1-benzoxazin-4-one (3a-d) which was used as starting material to synthesize some condensed and non-condensed heterocyclic compounds by reaction with nitrogen nucleophiles e.g., hydrazine hydrate, and formamide. Some of the newly synthesized analogues were chosen to evaluate their cytotoxic activity against...

Journal: :Acta poloniae pharmaceutica 2011
Magdy I El-Zahar Somaia S Adb El-Karim Mogedda E Haiba Mohammed A Khedr

A new series of (benzofuran-2-yl)-1-phenyl-1H-pyrazol-4-yl) pyrimidine derivatives were synthesized from 3-(benzofuran-2-yl)-1-phenyl-1H-pyrazol-4-carbaldehyde (1) through different routes of cyclocondensation reactions. Condensation of 1 with active methylene compounds afforded compounds 2-8. The cyclization of 2 with chloroacetic acid, ortho substituted benzoic acid and/or ethanolamine gave c...

2013
AMIRA A. GHONEIM SAHAR A. MOHAMED

Tert-butyl carbazate (1) reacted with ammonium thiocyanate and phenyl isothiocyanate to afford the corresponding 5-tert-butoxy-4H-1, 2, 4-triazole-3-thiol (3) 5-tert-butoxy-4-phenyl-2H1, 2, 4-triazole-3(4H)-thione 5 respectively. Compound (1) also reacted with carbon disulfide and potassium hydroxide to afford 5-tert-butoxy-1, 3, 4-oxadiazole-2(3H)-thione 6. Treatment of 6 with methyl iodide, 2...

2011
Richa Gupta Mamta Singh Mohammad Ajmal Vinod Singh Anupam Bisht S. Bhagwan

Synthesis of 2-(4-sec-butyl-phenyl)-propionic acid-pyrrolidin-2-ylcarbamoyl methyl ester with bio-isosteric concept for ibuprofen with enhancing anti-inflammatory potential. Ibuprofen on refluxing with 2-amino pyridine in chloroacetyl chloride in presence of glacial acetic acid gave 2-(4-sec-butyl-phenyl)-propionic acid-pyrrolidin-2-yl-carbamoyl methyl ester, which can be used as a prodrug for ...

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