الفهرس | Only 14 pages are availabe for public view |
Abstract The work presented in this thesis lies in two parts and involves the synthesis of series of new pyrazoles pyrazolo[3,4-b] pyrazines and pyrrolo [2,3-d] pyrimidines of potential biological interest.the first part : the starting material 5-chloro-1,3-dipheny1-1h-pyrazole-4- carboxadehyde (1) was prepared from the easily accessiable 1,3 (4h)-one.using vilsmeier-haack reaction. -dipheny1-1h-pyrazole-5 |