Preparation of Functionalized Organomanganese(II) Reagents by Direct Insertion of Manganese to Aromatic and Benzylic Halides
作者:Zhihua Peng、Paul Knochel
DOI:10.1021/ol201109g
日期:2011.6.17
arylmanganese compounds were prepared using commercial manganese powder in the presence of LiCl and catalytic amounts of both 2.5% InCl3 and 2.5% PbCl2 (THF, 0–50 °C). In addition, benzylic manganese reagents are obtained at 25 °C in ca. 70–80% yield (in the absence of LiCl) using commercial manganese powder and catalytic amounts of 2.5% InCl3 and 2.5% PbCl2. The resulting organomanganese reagents undergo
在LiCl的存在下,使用催化量的2.5%InCl 3和2.5%PbCl 2(THF,0–50°C),使用市售锰粉制备官能化的芳基锰化合物。另外,苄基锰试剂是在25°C左右的条件下获得的。使用市售锰粉,催化量为2.5%InCl 3和2.5%PbCl 2时,产率为70-80%(在没有LiCl的情况下)。所得的有机锰试剂经过平滑的1,2-加成,酰化,烯丙基取代,Pd催化的交叉偶联和铜催化的共轭物加成,以良好的收率提供了所需的产物。