作者:Lei Cheng、Ming-Ming Li、Li-Jun Xiao、Jian-Hua Xie、Qi-Lin Zhou
DOI:10.1021/jacs.8b09346
日期:2018.9.19
developed a highly regioselective addition of 1,3-dienes with simple ketones by nickel-hydride catalyst bearing DTBM-SegPhos ligand. A wide range of aromatic and aliphatic ketones directly coupled with 1,3-dienes, providing synthetically useful γ,δ-unsaturated ketones in high yield and regioselectivity. The asymmetric version of the reaction was also realized in high enantioselectivity by using novel chiral
我们通过带有 DTBM-SegPhos 配体的镍氢化物催化剂开发了 1,3-二烯与简单酮的高度区域选择性加成。多种芳香族和脂肪族酮直接与 1,3-二烯偶联,以高产率和区域选择性提供合成有用的 γ,δ-不饱和酮。通过使用新型手性配体 DTBM-HO-BIPHEP,该反应的不对称形式也以高对映选择性实现。这种加氢烷基化的效用通过 (R)-氟布芬的简便的产品改性和对映选择性合成得到了证明。