Consecutive Approach to Alkenes that Combines Radical Addition of Phosphorus Hydrides with Horner−Wadsworth−Emmons-Type Reactions
作者:Mark P. Healy、Andrew F. Parsons、James G. T. Rawlinson
DOI:10.1021/ol050292e
日期:2005.4.14
the phosphonothioate and reaction with a ketone, offers a concise one-pot approach to substituted alkenes. This novel method, which can incorporate alkylation or acylation steps, can be applied to the stereoselective formation of sterically hindered tri- and tetrasubstituted alkenes.
[反应:见正文]在自由基引发剂的存在下,将二乙基硫代亚磷酸酯加到末端烯烃中,然后使硫代磷酸膦酸酯脱质子并与酮反应,为取代烯烃提供了一种简洁的一锅法。可以结合烷基化或酰化步骤的这种新方法,可以用于空间受阻的三和四取代烯烃的立体选择性形成。