Reaction of allenylmagnesium and allenylindium bromides with nitrile oxides: synthesis of novel 5-butynyl- and 5-methylisoxazoles
作者:H.M. Sampath Kumar、Parvinder Pal Singh、Syed Shafi、Pitta Bhaskar Reddy、Kankala Shravankumar、Doma Mahender Reddy
DOI:10.1016/j.tetlet.2006.11.140
日期:2007.1
obtained in high yields through a domino addition, C–O heterocyclization involving allenylmagnesium bromide and benzonitrile oxide in dry THF, in which the corresponding 5-methylisoxazoles were isolated in trace amounts. However, when the reactions were attempted in aqueous media using allenylindium bromide, 5-methylisoxazoles were formed as the sole products in high yields.
通过将多烯基溴化镁和苯甲腈氧化物在干燥的THF中进行多米诺骨牌加成,C–O杂环化,可以高收率地获得5-丁炔基异恶唑,其中分离出痕量的相应的5-甲基异恶唑。然而,当尝试在含水介质中使用烯丙基溴化铟进行反应时,以高收率形成了5-甲基异恶唑作为唯一产物。