3-Methoxypyrazoles from 1,1-dimethoxyethene, few original results
作者:Elise Salanouve、Sandrine Guillou、Marine Bizouarne、Frédéric J. Bonhomme、Yves L. Janin
DOI:10.1016/j.tet.2012.02.057
日期:2012.4
β-unsaturated ketones were prepared. Upon addition of hydrazine, followed by iodination, 4-iodinated 3-methoxypyrazoles were obtained. The occurrence of a side compound also provided insights in the scope of this synthesis. In a second part, 1-(4-chlorophenyl)-3,3-dimethoxyprop-2-en-1-one was obtained from 1,1-dimethoxyethene and 4-chlorobenzoylchloride. The subsequent addition of hydrazine or phenylhydrazine