3,5-dinitro-benzoyl chloride was refluxed with different amino acids to form the amino acid derivatives that were reduced with zinc/formic acid, to form the products and the reduced products so formed were cyclized to give the title compounds with benzil in the presence of sodium ethoxide/ethanol. All the intermediates and title compounds were characterized by physical, chemical, analytical and...

HE COLOR TEST OF Zak et al. (1, 2, 3), in which a mixture of concentrated sulfuric acid, ferric chloride, and acetic acid is added to a solution of a steroid in glacial acetic acid, gives a purple color for steriods with the 5-ene,3$-ol grouping, and has proved useful for the clinical determination of cholesterol. These authors have qualitatively described the colors given by 22 other steroids ...

Biochemicals 5-hydroxytrptophan, 5-hydroxy indole acetic acid, ketanserin, bicuculline, baclofen, atropine, sodium octyl sulfonic acid, ethylene diamine tetra acetic acidEDTA, D-glucose, calcium chloride, bovine serum albumin fraction V, Superoxide dismutase from bovine erythrocytes were purchased from Sigma Chemical Co., St. Louis, USA. All other reagents were of analytical grade purchased loc...

The present study deals with the effects of alkaline and benzoyl chloride treatments sugar palm fibers (SPFs) on mechanical morphological properties SPF-reinforced poly(lactic acid) (PLA) composites. Seven different parameters SPFs were compared, which untreated, three solution concentrations 4%, 5%, 6% for treatment, 50 ml chloride-treated at soaking durations 10, 15, 20 min. Composites 30 wt....

Enantiomerically pure (S)-tributylstannyl[D1]methanol and (R)- and (S)-tributylstannyl[D1]methyl benzoates were Stille-coupled with bromobenzene and benzoyl chloride in 1,4-dioxane and toluene using [(Ph3P)4Pd] or [(Ph3P)2PdCl2] either alone or in combination with CuCN as cocatalyst at temperatures up to 80 °C. The products were found to be enantiomerically pure. (R)- and (S)-N-(tributylstannyl...

Modafinil (Diphenyl methyl Sulfinyl acetamid) is used clinically in the treatment of narcolepsy and sleeping disorders. The synthesis of R-modafinil, have started with the reaction of benzhydrol and thioglycolic acid in trifluoroacetic acid to afford benzhydryl sulfanyl acetic acid. The reaction of acid with thionyl chloride in benzene followed by treatment with ammonium hydroxide gave acetamid...

Microbial-induced CaCO3 precipitation (MICP) is an innovative and rapidly developing technology for sand solidification. The idea this research project was built based on the concept of sustainable development environmental protection. specific material used solidification soluble calcium ions generated by reaction limestone waste, a kind calcium-rich industrial waste from quarry, acetic acid. ...