Highly Chemoselective
<i>gem</i>
‐Difluoropropargylation of Aliphatic Alcohols
作者:Toshitaka Okamura、Syusuke Egoshi、Kosuke Dodo、Mikiko Sodeoka、Yoshiharu Iwabuchi、Naoki Kanoh
DOI:10.1002/chem.201904366
日期:2019.12.13
Despite the potential of α-fluoroethers in medicinal chemistry, their synthetic methods, especially etherification of aliphatic alcohols, have been limited. Herein, we developed two- and three-step gem-difluoropropargylation of aliphatic alcohols including amino acid derivatives and naturally occurring bioactive molecules. Highly chemoselective etherification proceeded by using the gem-difluoropropargyl
尽管 α-氟醚在药物化学中具有潜力,但它们的合成方法,尤其是脂肪醇的醚化,一直受到限制。在此,我们开发了脂肪醇(包括氨基酸衍生物和天然存在的生物活性分子)的两步和三步偕二氟炔丙基化反应。在三氟甲磺酸银和三乙胺存在的情况下,使用偕-二氟炔丙基溴二钴络合物进行高度化学选择性醚化。通过使用硝酸铈铵或 N,N,N'-三甲基乙二胺实现二钴络合物的去络合。将由此获得的偕-二氟炔丙基醚转化为各种 α-二氟醚,有望用于药物化学。