A new, efficient approach to α,β-unsaturated ketones and β-hydroxy ketones from 4,5-dihydroisoxazoles
作者:Stefan Kwiatkowski
DOI:10.1039/c39870001496
日期:——
2-(N-Nitrosomethylamino-oxy)ethyl ketones (3), obtained from solvolysis with sodium nitrite of N-methyl-4,5-dihyroisoxazolium methylsulphates (2), were converted into α,β-unsaturated ketones (4) by treatment with base or into β-hydroxy ketones (5) by treatment with carboxylic acids.
用亚硝酸钠将亚甲基N-甲基-4,5-二氢异恶唑鎓甲基硫酸盐(2)与亚硝酸钠溶剂化制得的2-(N-亚硝基甲基氨基-氧基)乙基酮(3)通过处理转化为α,β-不饱和酮(4)通过用羧酸处理可与碱或β-羟基酮(5)结合使用。