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7,119 Newest Publications about the topic condensation

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(E)‐Phenethyl 3‐(3,4‐dihydroxy‐5‐nitrophenyl)acrylate

01-Dec-2007 | ; Chun‐Nian Xia; Wei‐Xiao Hu; Wei Zhou, Acta Crystallographica Section E, 2007

The title compound, also known as 5‐nitrocaffeic acid phenethyl ester, C17H15NO6, was prepared by the condensation reaction of 3,4‐dihydroxy‐5‐nitrobenzaldehyde, Meldrum's acid and 2‐phenylethanol. The dihedral angle between the phenyl and benzene rings is 78.12 (5)°. Inter‐ and intramolecular ...

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5‐Bromo‐N′‐(4‐hydroxybenzylidene)nicotinohydrazide

01-Dec-2007 | ; Chun‐Bao Tang, Acta Crystallographica Section E, 2007

The title Schiff base compound, C13H10BrN3O2, was derived from the condensation reaction of 4‐hydroxybenzaldehyde with 5‐bromonicotinohydrazide. The dihedral angle between the benzene and pyridine rings is 15.2 (3)°. In the crystal structure, molecules are linked through intermolecular N—H...O, ...

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4‐Chloro‐2‐[1‐(5‐chloro‐2‐hydroxybenzyl)‐1H‐benzimidazol‐2‐yl]phenol

01-Dec-2007 | ; Xiao‐Niu Fang; Li‐Min Liu; Gan‐Sheng Huang; Ping Hu, Acta Crystallographica Section E, 2007

The title compound, C20H14Cl2N2O2, was prepared by the one‐step condensation of o‐phenylenediamine with 5‐chloro‐2‐hydroxybenzaldehyde. The dihedral angles between the benzimidaloe ring system and the benzene rings are 77.2 (2) and 87.1 (2)° Molecules are linked by O—H...N intermolecular ...

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5‐Bromo‐N′‐(2‐hydroxybenzylidene)nicotinohydrazide

01-Dec-2007 | Tang, Chun‐Bao, Acta Crystallographica Section E, 2007

The title Schiff base compound, C13H10BrN3O2, was derived from the condensation reaction of salicylaldehyde with 5‐bromonicotinohydrazide. The dihedral angle between the benzene ring and the pyridine ring is 13.2 (4)°. In the crystal structure, molecules are linked through N—H...O and C—H...O ...

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4‐Chloro‐2‐[1‐(5‐chloro‐2‐hydroxybenzyl)‐1H‐benzimidazol‐2‐yl]phenol

01-Dec-2007 | Fang, Xiao‐Niu; Liu, Li‐Min; Huang, Gan‐Sheng; Hu, Ping, Acta Crystallographica Section E, 2007

The title compound, C20H14Cl2N2O2, was prepared by the one‐step condensation of o‐phenylenediamine with 5‐chloro‐2‐hydroxybenzaldehyde. The dihedral angles between the benzimidaloe ring system and the benzene rings are 77.2 (2) and 87.1 (2)° Molecules are linked by O—H...N intermolecular ...

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3‐(3‐Methoxyphenyl)‐5‐[(5‐methyl‐1,3,4‐thiadiazol‐2‐yl)sulfanylmethyl]‐1,2,4‐oxadiazole

01-Dec-2007 | Wang, Pin‐liang; Zeng, Hai‐shu; Li, Hai‐ling; Kang, Si‐shun; Wang, Hai‐bo, Acta Crystallographica Section E, 2007

The title compound, C13H12N4O2S2, was synthesized via condensation of 5‐chloromethyl‐3‐(3‐methoxyphenyl)‐1,2,4‐oxadiazole with (5‐methyl‐1,3,4‐thiadiazol‐2‐yl)methanethiol. The benzene and oxadiazole rings are coplanar due to the extended aromatic system. The angle between this plane and the ...

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(E)‐Phenethyl 3‐(3,4‐dihydroxy‐5‐nitrophenyl)acrylate

01-Dec-2007 | Xia, Chun‐Nian; Hu, Wei‐Xiao; Zhou, Wei, Acta Crystallographica Section E, 2007

The title compound, also known as 5‐nitrocaffeic acid phenethyl ester, C17H15NO6, was prepared by the condensation reaction of 3,4‐dihydroxy‐5‐nitrobenzaldehyde, Meldrum's acid and 2‐phenylethanol. The dihedral angle between the phenyl and benzene rings is 78.12 (5)°. Inter‐ and intramolecular ...

more

5‐Bromo‐N′‐(4‐hydroxybenzylidene)nicotinohydrazide

01-Dec-2007 | Tang, Chun‐Bao, Acta Crystallographica Section E, 2007

The title Schiff base compound, C13H10BrN3O2, was derived from the condensation reaction of 4‐hydroxybenzaldehyde with 5‐bromonicotinohydrazide. The dihedral angle between the benzene and pyridine rings is 15.2 (3)°. In the crystal structure, molecules are linked through intermolecular N—H...O, ...

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4‐(4‐Chlorophenyl)‐3‐phenyl‐5‐(4‐pyridyl)‐4H‐1,2,4‐triazole

01-Dec-2007 | Hu, Jing; Ma, Guochun; Chen, Guofeng; Zhang, Wenqin, Acta Crystallographica Section E, 2007

The title compound, C19H13ClN4, was synthesized by the condensation of isonicotinohydrazide and N‐(4‐clorophenyl)benzimidoyl chloride in N,N‐dimethylacetamide. In the title molecule, the triazole ring is oriented at dihedral angles of 34.64 (2), 30.97 (3) and 71.82 (3)° with respect to the ...

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{2,6‐Bis[1‐(phenylimino)ethyl]pyridine}dichloridomanganese(II) dichloromethane hemisolvate

01-Dec-2007 | Guo, Meng‐Ping; Guo, Gui‐Quan; Guo, Hui‐Rui; Zhong, Di‐Chang; Zhou, Wei‐Qiang, Acta Crystallographica Section E, 2007

The title complex, [MnCl2(C21H19N3)]·0.5CH2Cl2 or [MnCl2(Plep)]·0.5CH2Cl2 {Plep is 2,6‐bis[1‐(phenylimino)ethyl]pyridine, derived from the condensation of 2,6‐diacetylpyridine and aniline in methanol} is composed of two crystallographically independent [MnCl2(Plep)] neutral units and a CH2Cl2 ...

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