Applying asymmetric dihydroxylation to the synthesis of difluorinated carbohydrate analogues: a 1,1-difluoro-1-deoxy-d-xylulose
作者:Liam R. Cox、Gareth A. DeBoos、Jeremy J. Fullbrook、Jonathan M. Percy、Neil Spencer
DOI:10.1016/j.tetasy.2004.11.017
日期:2005.1
AD conditions. A number of issues were raised including generally low reactivity of simple 1,3-butadienes, and useful reactivity of certain 1,4- and substituted 1,3-pentadienes. Though the basic conditions used for the AD resulted in the decomposition of certain diol products, enol acetal chemistry allowed the asymmetric synthesis of a difluorinated analogue of a deoxyxylulose.
现成的二氟烯醇碘化物和锡烷分别与链烯基锡和碘化物进行钯催化的偶联反应,得到一组二氟的1,3-二烯和1,4-二烯的试验样品,然后将其暴露于AD条件下。提出了许多问题,包括简单的1,3-丁二烯的反应性通常较低,以及某些1,4-和取代的1,3-戊二烯的有用的反应性。尽管用于AD的基本条件导致某些二醇产物的分解,但是烯醇缩醛化学允许脱氧木酮糖的二氟类似物的不对称合成。