Stereoselective synthesis of α-difluoromethyl-β-amino alcohols via nucleophilic difluoromethylation with Me3SiCF2SO2Ph
作者:Jun Liu、Chuanfa Ni、Fang Wang、Jinbo Hu
DOI:10.1016/j.tetlet.2008.01.034
日期:2008.3
A facile synthesis of anti-α-(difluoromethyl)-β-amino alcohols was accomplished by using a nucleophilic difluoromethylation strategy with Me3SiCF2SO2Ph reagent. Good to excellent chemical yields as well as modest to good diastereoselectivity were achieved in these reactions. We found that the solvent played a crucial role in controlling the diastereoselectivity of the reaction, and an apolar solvent
通过使用亲核性二氟甲基化策略和Me 3 SiCF 2 SO 2 Ph试剂,可以轻松合成抗-α-(二氟甲基)-β-氨基醇。在这些反应中,获得了良好至优异的化学产率以及适度至良好的非对映选择性。我们发现溶剂在控制反应的非对映选择性中起关键作用,而非极性溶剂(如甲苯)有助于改善反应的非对映选择性。的抗-α-(二氟甲基)-β-氨基醇3A被证明是中间以合成有用的合成difluoromethylated恶唑烷酮9。