have been isolated and their structures determined. Controlled dehydration led to α-cis-, α-trans-, β-, γ-cis-and γ-trans-2-prenyl cyclogeraniol. These were oxidized to the corresponding 2-prenyl cyclocitrals.
Synthès biomimétique des sesqui-ionones α-cis, α-trans et β
作者:Didier Babin、Marc Julia
DOI:10.1016/s0040-4020(01)91803-4
日期:1984.1
dimethylvinylcarbinol and formic acid. The distal doublebond in the formyl-oxy-ketone was protected by conversion into the corresponding methoxy bromide with NBS/MeOH. Sulfuric acid effected the cyclisation with the ringdoublebond in the β position; reductive removal of the protecting group followed by reoxidation led to “sesqui-β-ionone” 10. Phosphoric acid led to the α isomers (cis and trans) of the bromoethers