antibacterial activity of the aerial extracts from xanthium brasilicum prepared in methanol, diethyl ether, petroleum benzene and an equal mixture of the three solvents were studied against bacterial laboratory standards and clinical isolates using the disk diffusion method. the best antibacterial results were obtained when methanol or the solvent mixture was used. the crude extract with the hi...

In this research, we synthesized oxazine and thiazine derivatives (3-6). These of chacone compounds (1 2) that from 4- hydroxyacetophenone aldehyde such as, 4-bromobenzaldehyde chlorobenzaldehyde. chalcone (1-2) reacted with urea to produce as 4-[4-amino-6-(4-subsutitedphenyl)-2H-1,3-oxazin-2-yl] phenol (3 4) thiourea 4-[4-amino-6-(4-subsutitedphenyl)-2H-1,3-thiazin-2-yl] (5 6). were characteri...

In this study heterocyclic compounds were prepared from thioxanthone derivatives and determined their structure by measuring melting point (M.P) infrared spectrum (FTR) 1HNMR for each one. These used testing antibacterial activity Streptococcus mutans, Staphylococcus saprophyticus, Enterococcus faecalis (Gram positive bacteria) Haemophilus influenzae negative bacteria). Prepared I,II,III,IIV sh...

A simple method for the synthesis of octahydroquinazolinone derivatives in the presence of BF3.SiO2 and Insecticide activity of these compounds against spodoptera litura was investigated to be comparable to commercial pyrethroid insecticides, Cypermethrin and Cyhalothrin. The structure of the isolated compounds was characterized by 1HNMR and FT-IR spectroscopy.The proposed method had some ad...

Bu çalışmada, 5,17-bis-tert-butil-11,23-dikarboksilik asit-25,27-dihidroksi- 26,28-bis(3-tiyol-1-oksipropan)-kaliks[4]aren (5) bileşiği başarıyla sentezlenmiştir. Sentezlenen bileşiğin yapısı 1HNMR, 13CNMR ve elementel analiz teknikleri kullanılarak aydınlatılmıştır. Elde edilen merkapto grubu bağlı kaliks[4]aren türevi, yeni bir polimer içerikli membran hazırlanması için selüloz triasetat 2-ni...

This work is concerned with the preparation of a number organic ammonium formate salts (or ionic liquids; ILs) throughout reaction between formic acid and some aliphatic aromatic amines including ammonia. Five were formed, them in form solid others as liquids (ILs) at room temperature. The yields prepared ranged from (21%) to (79%). However, attempts towards other fifteen not successful. result...

In this work, magnetic mesoporous silica-alumina composites (MSA) containing three metal oxides(MSA/MO) with different molar ratio of Si to Al (0.5, 1 and 2) were synthesized. The efficiency prepared catalysts was compared modified natural zeolite (ferrierite) in the multicomponent synthesis indeno[1,2-b]indole-9,10-diones. Immobilization ZnO, CuO NiO on increased their Lewis acidic sites impro...

Abstract Diphenylamine (DPA), formyl chloride, and sodium hydride (NaH) as raw materials synthesize methyldiphenylurea stabilizer by alkylation reaction. The physical chemical properties of were characterized nuclear magnetic resonance hydrogen spectrum (1HNMR), X-ray energy (EDS), Fourier transforms infrared spectroscopy (FT-IR) differential thermal analysis (DTA). Thermal Decomposition Experi...