Flexible Stereoselective Functionalizations of Ketones through Umpolung with Hypervalent Iodine Reagents
作者:Pushpak Mizar、Thomas Wirth
DOI:10.1002/anie.201400405
日期:2014.6.2
The functionalization of carbonyl compounds in the α‐position has gathered much attention as a synthetic route because of the wide biological importance of such products. Through polarity reversal, or “umpolung”, we show here that typical nucleophiles, such as oxygen, nitrogen, and even carbon nucleophiles, can be used for addition reactions after tethering them to enol ethers. Our findings allow novel
由于此类产品具有广泛的生物学重要性,因此羰基化合物在α位上的功能化作为合成途径已引起广泛关注。通过极性反转或“极性”,我们在这里表明典型的亲核试剂,例如氧,氮,甚至碳亲核试剂,在将它们束缚到烯醇醚后,可以用于加成反应。我们的发现可以进行新颖的逆合成规划,并可以快速组装以前只能通过多步序列访问的结构。