作者:Markus E. Scheller、W. Bernd Schweizer、Bruno Frei
DOI:10.1002/hlca.19890720210
日期:1989.3.15
The synthesis of the α, β-epoxy-acylsilanes 1 and 2 starting from the allylic silyl alcohols (E)- and (Z)-3, respectively, by epoxidation with t-BuOOH/VO(acac)2 followed by oxidation with Collins reagent (CrO3/pyridine) in up to 70% overall yields, is described. The acid-catalyzed rearrangement of the epoxy-silyl alcohols 4A + B und 5A + B led to the novel unstable diastereoisomeric α-silyl-β-hydroxy-aldehydes
通过分别用t -BuOOH / VO(acac)2环氧化,然后用柯林斯氧化,分别从烯丙基甲硅烷基醇(E)-和(Z)-3开始合成α,β-环氧-酰基硅烷1和2描述了总产率高达70%的试剂(CrO 3 /吡啶)。环氧甲硅烷基醇4A + B和5A + B的酸催化重排分别导致了新的不稳定的非对映异构体α-甲硅烷基-β-羟基醛9和10。结构10通过对相应的醇11的X射线晶体结构分析,确定了该化合物。