Reactivite de lithiens derives d'ethers de la cyanhydrine du benzaldehyde vis-a-vis d'α-enones cycliques
作者:Nadine Seuron、Jacqueline Seyden-Penne
DOI:10.1016/0040-4020(84)85069-3
日期:1984.1
Conjugate addition of reagent 1A to 2-cyclohexenone 3 can be realized in THF-HMPT, so that one-pot conjugate addition—CH3I enolate trapping, leading to trans 2-methyl 3-benzoylcyclohexanone 17 can be easily performed. From isophorone 4 and Δ1(9)-2-octalone 5, 1, 4-addition under kinetic control is observed in THF. In the presence of HMPA, the reaction is under thermodynamic control. At low temperatures