New routes to the synthesis of pyridazinone, ethoxypyridine, pyrazole and pyrazolo[1,5‐a]pyrimidine derivatives incorporating a benzotriazole moiety

Abstract A new approach to the synthesis of pyridazinone, ethoxypyridine, pyrazole and 7‐aminopyrazolo‐[1,5‐a]pyrimidine derivatives. The structure of the newly synthesized compounds was elucidated by elemental analyses, ir, 1H nmr spectra and in some cases by 13C nmr investigations.