A Practical Synthesis of α,β-Unsaturated Imides, Useful Substrates For Asymmetric Conjugate Addition Reactions
作者:Steven N. Goodman、Eric N. Jacobsen
DOI:10.1002/1615-4169(200210)344:9<953::aid-adsc953>3.0.co;2-a
日期:2002.10
We report an improved synthesis of α,β-unsaturated imides, a class of compounds that has been identified as broadly useful in (salen)aluminum-catalyzed asymmetric conjugate addition reactions. An efficient, scaleable procedure for the synthesis of phosphonate imide reagent 4 is described, as well as a DBU-mediated Horner WadsworthEmmons reaction that affords the target compounds in high yield and (E)-selectivity
我们报道了改进的α,β-不饱和酰亚胺的合成,该化合物被确定为在(salen)铝催化的不对称共轭加成反应中广泛使用的一类化合物。描述了合成膦酸酯酰亚胺试剂4的有效,可缩放的程序,以及DBU介导的霍纳·沃兹沃思埃蒙斯反应,该反应以高产率和(E)-选择性且具有良好的官能团耐受性提供了目标化合物。