Synthesis of some imidazoline derivatives and study of their anti-corrosion efficiency

Imidazoline is a class of heterocycles formally derived from imidazoles by the reduction of one of the two double bonds. Three isomers are known, 2-imidazolines, 3-imidazolines, and 4-imidazolines. The 2-imidazolines and 3-imidazolines contain an imine centre, whereas the 4-imidazolines contain an alkene group. The 2-Imidazoline group occurs in several drugs and it is one of the heterogeneous organic compounds used in many pharmaceutical, petroleum and other industries. This thesis focuses on the Synthesis of imidazolinone derivatives using environmentally friendly methods in reducing corrosion in crude oil pipes or other equipment, which causes gas leaks and oil leaks. Imidazoline compound is the most important injected into crude oil in insulation plants to reduce corrosion. Many companies produce imidazoline However, most of the preparation methods used are harmful to the environment and hazardous to humans, particularly those involved in the synthesis of imidazoline. Iraq crude oil is one of the acidic substances that cause the corrosion of pipes and other equipment. In such a corrosion, we inject imidazoline into the crude oil. Corrosion is one of the recurrent problems during crude Oil extraction and one of the persistent problems that has not been finally disposed of. This Thesis will be in four parts in general. First, the synthesis of imidazole derivatives from fatty acids in an environmentally friendly way (green chemistry). Secondly, to ensure the purity of the prepared imidazole derivatives and examine them with FT-IR devices and the NMR to ensure the validity of the produced compounds. Third, studying the effect of imidazole derivatives prepared as corrosion inhibitors by conducting corrosion experiments used in ASTM. Fourth, discussing the obtained results and explaining how their effect was as corrosion inhibitors. Through these, the best derivative that works as a corrosion inhibitor was reached according to the obtained results.