we describe here a suitable approach for the synthesis of n-unsubstituted monocyclic b-lactams under mild reaction conditions by the annelation of imines with substituted acetylchlorides. in this method the reaily available phtalimidoacetyl chloride were allowed to react with - dibenzylideneiminotoluene (hydrobenzamide) in the presence of an equimolar amount of triethylamine in refluxing toluen...

Background: Rapid development of the nanotechnology industry requires that we understand the toxicity of nanoparticles and factors associated with their risks to living organisms. The aim of this study was to investigate the toxicity of nickel nanoparticles (Ni NPs) and nickel chloride on the activity of antioxidant enzymes in serum and liver of rats. Materials and Methods: In this experimental...

on this project we try to calculated power of hydrogen on dycarbonil compound in different ways ; the first way is shoster way , for sain power of hydrogen notice the different power between central conforms on it and main conform that’s didn’t have hydrogen joint . or in other way different of energy between open and close form. second way, is average way? this is for way that studied conf...