A new synthesis of α,β-unsaturated ketones. Allylic alkylation of 1-isocyano-1-tosylalkenes
作者:Jarusz Moskal、Albert M van Leusen
DOI:10.1016/s0040-4039(01)81237-5
日期:1984.1
Ketone (1) are homologated to enones 2 by alkylating (introduction of R3) the condensation products 4 (derived from 1 and tosylmethyl isocyanide), followed by acid catalyzed hydrolysis.
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.