Synthesis of α,α-difluoro-β-hydroxy ketone via the La(OTf)3-catalyzed aldol reaction of carbonyl compounds with difluoroenol O-Boc esters
作者:Shigeru Sasaki、Tatuo Suzuki、Toshihiro Uchiya、Shigenobu Toyota、Akira Hirano、Mao Tanemura、Hiroyoshi Teramoto、Takayasu Yamauchi、Kimio Higashiyama
DOI:10.1016/j.jfluchem.2016.10.017
日期:2016.12
present an efficient method for the construction of α,α-difluoro-β-hydroxy ketones. The La(OTf)3-catalyzed aldol reaction between difluoroenol O-Boc (Boc = tert-butyloxycarbonyl) esters and carbonyl compounds affords α,α-difluoro-β-hydroxy ketones in good yield. The key reagents of this reaction are the difluoroenol O-Boc esters, which are easily synthesized from trifluoromethyl alcohols in two steps
我们在本文中提出了一种用于构建α,α-二氟-β-羟基酮的有效方法。在La(OTF)3 - difluoroenol之间催化醛醇缩合反应ø -Boc(BOC = 叔丁氧基羰)酯和羰基化合物以良好的收率得到α,α-二氟- β羟基酮。该反应的关键试剂是二氟烯醇O- Boc酯,它很容易分三步从三氟甲醇合成。