New Highly Asymmetric Henry Reaction Catalyzed by CuII and aC1-Symmetric Aminopyridine Ligand, and Its Application to the Synthesis of Miconazole
作者:Gonzalo Blay、Luis R. Domingo、Victor Hernández-Olmos、José R. Pedro
DOI:10.1002/chem.200800069
日期:2008.5.19
A new catalytic asymmetric Henry reaction has been developed that uses a C(1)-symmetric chiral aminopyridine ligand derived from camphor and picolylamine. A variety of aromatic, heteroaromatic, aliphatic, and unsaturated aldehydes react with nitromethane and other nitroalkanes in the presence of DIPEA (1.0 equiv), Cu(OAc)(2)*H(2)O (5 mol %), and an aminopyridine ligand (5 mol %) to give the expected
已开发出一种新的催化不对称亨利反应,该反应使用衍生自樟脑和甲基吡啶胺的C(1)-对称手性氨基吡啶配体。在DIPEA(1.0当量),Cu(OAc)(2)* H(2)O(5 mol%)和氨基吡啶的存在下,各种芳香族,杂芳香族,脂肪族和不饱和醛与硝基甲烷和其他硝基烷反应配体(5摩尔%),以高收率(高达99%),中等至良好的非对映选择性(高达82:18)和出色的对映选择性(高达98%)提供预期的产物。该反应是耐空气的,并且已经用于抗真菌剂咪康唑的合成中。