Enantioselective Nickel-Catalyzed Michael Additions of Azaarylacetates and Acetamides to Nitroalkenes
作者:Charlene Fallan、Hon Wai Lam
DOI:10.1002/chem.201202093
日期:2012.9.3
Put a nickel in it: Azaarylacetates and acetamides, which have been neglected as substrates in catalytic asymmetric synthesis, undergo highly enantioselective Michael additions to nitroalkenes in the presence of a chiral nickel(II)‐bis(diamine) complex (see scheme; Bn=benzyl, MS=molecular sieves). This process is tolerant of a wide variety of azaarenes in the pronucleophile.
在其中放镍:在手性镍(II)-双(二胺)配合物的存在下,氮杂芳基乙酸酯和乙酰胺在催化不对称合成中被忽略为底物,对硝基烯烃进行高度对映选择性的迈克尔加成反应(见方案; Bn =苄基,MS =分子筛)。该过程可耐受亲核试剂中的多种氮杂氮杂。