作者:Matthias Welker、Simon Woodward
DOI:10.1016/j.tet.2010.10.048
日期:2010.12
of α,β-disubstituted ketones through aldol reactions are compared. A one-pot ACA/aldol domino process is lower yielding than alternative procedures involving enantiomerically pure β-substituted silyl enol ethers. The use of chiral acetals derived from hydrobenzoin provides access to syn and anti diols in moderate to good yields and high diastereoselectivities. A novel synthesis of functionalized β,γ-unsaturated
比较了通过醛醇缩合反应形成α,β-二取代酮的对映选择性方法。与涉及对映体纯的β-取代的甲硅烷基烯醇醚的替代方法相比,一锅ACA /醛醇多米诺法的产率较低。使用来自氢化苯偶姻衍生手性缩醛的可访问SYN和抗中度至良好的收益率和高非对映选择性二醇。还描述了功能化的β,γ-不饱和缩醛的新颖合成。