27772-80-1Relevant academic research and scientific papers
Synthesis of 3-Hydroxyisoxazoles from β-Ketoesters and Hydroxylamine
Sato, Kazuo,Sugai, Soji,Tomita, Kazuo
, p. 1831 - 1838 (2007/10/02)
An efficient synthesis of 3-hydroxyisoxazoles from β-ketoesters and hydroxylamine was investigated.The reaction of the sodium salts of β-ketoesters and hydroxylamine at a low temperature, followed by quenching with an excess of conc.HCl under heating gave predominantly 3-hydroxyisoxazoles involving 4-sulfenylated 3-hydroxyisoxazoles.Starting from the prepared 4-(2,4-dichlorobenzyl)-3-hydroxy-5-methylisoxazole, a potential herbicidal compound, 4-(2,4-dichlorobenzoyl)-3-hydroxy-5-methylisoxazole, was also synthesized in five steps.
