The reaction of 1-methoxymethyl-2-phenylthiocyclobutanes with phenylthiotrimethylsilane followed by hydrolysis gave (E)- and (Z)-γ,δ-unsaturated ketones with high stereoselectivity. The starting materials were easily prepared by the stereoselective addition of Grignard reagents to trans-2-phenylthiocyclobutyl ketones.
将 1-甲氧基甲基-2-苯基
硫环丁烷与苯基
硫代三甲基
硅烷反应,然后进行
水解,可以得到具有高度立体选择性的(E)-和(Z)-γ,δ-不饱和酮。通过
格氏试剂与反式-2-苯
硫基
环丁基酮的立体选择性加成,很容易制备出这些起始材料。