KWIATKOWSKI, STEFAN, J. CHEM. SOC. CHEM. COMMUN.,(1987) N 19, 1496-1498
作者:KWIATKOWSKI, STEFAN
DOI:——
日期:——
US4845301A
申请人:——
公开号:US4845301A
公开(公告)日:1989-07-04
Process for the preparation of .alpha.-hdroxyketones
申请人:Daicel Chemical Industries, Ltd.
公开号:US04845301A1
公开(公告)日:1989-07-04
A process for the preparation of .alpha.-hydroxyketones ##STR1## having a high purity in a good yield from a compound ##STR2## by rearrangement reaction in aqueous alkaline solution, where R.sub.1 and R.sub.3 each represent an alkyl, alkenyl or aryl group, R.sub.2 represents a hydrogen atom or an alkyl, alkenyl or aryl group, and X represents hydroxyl group or a halogen atom.
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-unsaturatedketones (4) by treatment with base or into β-hydroxyketones (5) by treatment with carboxylic acids.