Three-Step Synthesis of 2-Acetyl-4-methyl-3,4-dihydropyran Oximes from Acetylbenzenes and Acetylene
摘要:
2-Acetyl-4-methyl-3,4-dihydropyrans reacted with hydroxylamine in pyridine to give (E)-1-(4-methyl-3,4-dihydro-2H-pyran-2-yl)ethan-1-one oximes in up to 85% yield with high stereoselectivity.
Dioximes of 1,6-heptanediones from acetylene and ketones: only three atom-economic steps
作者:Elena Yu. Schmidt、Inna V. Tatarinova、Nadezhda I. Protsuk、Igor A. Ushakov、Boris A. Trofimov
DOI:10.1016/j.mencom.2018.03.010
日期:2018.3
2-Acetyl-3,4-dihydropyrans, synthesized from acetylene and ketones in two steps, react with hydroxylamine to afford 5-hydroxy-1,6-heptanediorie dioximes (E,E-isomers) in 72-96% yields.