الفهرس | Only 14 pages are availabe for public view |
Abstract This work consists of four parts Part 1: In this part 2-amino thiophene -3-carboxylate (1) was used as starting material in the synthesis of some new compounds which have a considerable antioxidant properities for lubricating oils. Part 2: synthesis of substituted thieno-pyrimidinones and thieno-pyridinones Part 3:Efficient Synthesis of Some New Thiophene Based Heterocycles Part 4: Evaluation of the prepared compounds as antioxidant additives for the tested lubricating oil. |