A simple synthesis of (E)-alk-1-enyl mesylates from (E)-alk-1-enylphosphonates is reported. Construction of γ-hydroxy-α,β-unsaturated compounds was achieved by a two-step process involving dihydroxylation of the enol mesylates followed by HWE reaction of the resulting α-hydroxy aldehydes with activated methylphosphonates. Enantioselective synthesis of the title compounds is also reported.
报告了一种从(E)-alk-1-
烯基
膦酸盐简单合成(E)-alk-1-
烯基
甲磺酸酯的方法。通过
烯醇
甲磺酸酯的二羟基化,然后将得到的δ-羟基醛与活化的
甲基膦酸盐进行 HWE 反应,分两步合成了δ-羟基δ,δ-不饱和化合物。报告还介绍了标题化合物的对映选择性合成。