Synthesis and Characterization of Chalcones and Pyrazolines derived from Substituted Aryl ether

Few novel chalcones were synthesised by treating 4-fluoro-3-phenoxy benzaldehyde with different substituted ketones and characterised using 1H NMR and mass spectrometry. The chalcones synthesised were further treated with hydrazine hydrate to get corresponding pyrazolines. The newly synthesised pyrazolines were characterised by 1H NMR and mass spectrometry

Synthesis of biologically active 4-amino-6-arylmethyl-3-mercapto-1, 2, 4-triazin-5(4H)-ones and their Schiff bases

943-94

2-(2-Methoxy­phen­yl)-4,4-dimethyl-4,5-dihydro-1,3-oxazole

In the title mol­ecule, C12H15NO2, the oxazole ring adopts an envelope conformation. Overall, the mol­ecule is approximately planar, the dihedral angle between the mean plane through all but the methyl­ene C atom of the five-membered ring and the aromatic ring being 8.6 (1)°. A weak C—H⋯O inter­action contributes to the stabilization of the crystal structure

(2E)-1-(4-Methyl­phen­yl)-3-(2,3,5-trichloro­phen­yl)prop-2-en-1-one

In the title mol­ecule, C16H11Cl3O, the dihedral angle between the two benzene rings is 33.2 (1)°. The crystal packing is stabilized by C—H⋯O hydrogen bonds

Synthesis and antibacterial activity of nitro-furylvinylquinazolinones

715-71

Synthesis, Characterization and Biological Activity Studies of 1,3,4-Oxadiazole Analogs

The reaction of p-bromoanilino acetohydrazide(II) with aromatic aldehydes in alcohol yielded 2-[4-bromo aniline] N-substituted benzylidine hydrazides (IIIa-IIIj), which in presence of yellow mercuric oxide and iodine in DMF, yielded corresponding 4-bromo[(N-5-substituted 1,3,4 oxadiazole-2 –yl)methyl]aniline (IVa-IVj). Structures of the compounds synthesized were confirmed by IR, 1HNMR and MASS spectroscopic analysis. The newly synthesized compounds were screened for antibacterial, antifungal and anti-inflammatory activities. Some of the compounds showed remarkable antibacterial, antifungal and anti-inflammatory activities

5-Acetyl-4-(4-methoxy­phen­yl)-6-methyl-3,4-dihydro­pyrimidin-2(1H)-one

In the title mol­ecule, C14H16N2O3, the heterocyclic ring adopts a flattened boat conformation, and the plane through its four coplanar atoms makes a dihedral angle of 89.65 (7)° with the benzene ring. The non-H atoms of the carbonyl, acetyl and methyl groups are nearly coplanar with the attached heterocyclic ring. Inter­molecular N—H⋯O and C—H⋯O hydrogen bonds are present in the crystal structure

5-Acetyl-4-(2-chloro­phen­yl)-6-methyl-3,4-dihydro­pyrimidin-2(1H)-one

In the title mol­ecule, C13H13ClN2O2, the heterocyclic ring adopts a flattened boat conformation with the plane through the four coplanar atoms making a dihedral angle of 89.16 (5)° with the benzene ring, which adopts an axial orientation. The carbonyl, acetyl and methyl groups each have an equatorial orientation. In the crystal structure, inter­molecular N—H⋯O hydrogen bonds lead to a tape motif. The H atoms of the methyl group at position 6 are disordered over two positions of opposite orientation

Studies on the Anthelmintic Property of Aminobenzylated Mannich Bases

Studies were conducted on the anthelmintic property of about 15(e-h, 1e-1h, 2d-2f and 3e-3h) synthesized aminobenzylated Mannich bases bearing N-methyl piperazine using Indian earthworms Pheritima Posthuma against piperazine citrate as standard reference. Three concentrations of each compound (0.1, 0.2, 0.3% w/v) were studied, which involved the determination of paralysis and death time of the worms. The compound 1g exhibited the most significant anthelmintic activity among all the compounds screened against the worms as compared to standard drug

2-Bromo-1-(4-methyl­phen­yl)-3-phenyl­prop-2-en-1-one. Corrigendum

Corrigendum to Acta Cryst. (2008), E64, o1559