Synthesis of 9,9′-biphenanthryl-10,10′-bis(oxazoline)s and their preliminary evaluations in the Friedel–Crafts alkylations of indoles with nitroalkenes
作者:Shuang-zheng Lin、Tian-pa You
DOI:10.1016/j.tet.2008.11.083
日期:2009.1
Chiral 9,9′-biphenanthryl-10,10′-bis(oxazoline)s 6a–d were firstly prepared. These new chiral compounds were evaluated as ligands for the Friedel–Crafts alkylations of indoles with nitroalkenes, excellent yields and modest to good enantioselectivities were achieved.
首先制备了手性9,9'-联菲基-10,10'-双(恶唑啉)s 6a – d。这些新的手性化合物被评估为吲哚与硝基烯烃的Friedel-Crafts烷基化反应的配体,获得了优异的收率和中等至良好的对映选择性。