Rhodium/Chiral Diene-Catalyzed Asymmetric 1,4-Addition of Arylboronic Acids to Arylmethylene Cyanoacetates
作者:Sebastian Sörgel、Norihito Tokunaga、Keigo Sasaki、Kazuhiro Okamoto、Tamio Hayashi
DOI:10.1021/ol702879u
日期:2008.2.1
Asymmetric 1,4-addition of arylboronic acids to (E)-methyl 2-cyano-3-arylpropenoates proceeded in the presence of a rhodium catalyst (3 mol %) coordinated with a chiral diene ligand, (R,R)-Ph-bod*, to give high yields of the corresponding methyl 3,3-diaryl-2-cyanopropanoates with high enantioselectivity (up to 99% ee). This catalytic asymmetric transformation was applied to the asymmetric synthesis
在具有手性二烯配体(R,R)-Ph- bod *,以高对映选择性(至多99%ee)得到高产率的相应的3,3-二芳基-2-氰基丙酸甲酯。该催化不对称转化应用于(R)-托特罗定的不对称合成。