Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60615, USA.
Chem Commun (Camb). 2010 Oct 7;46(37):6980-2. doi: 10.1039/c0cc02492a. Epub 2010 Aug 23.
A new Lewis base-tolerant LBA (Lewis Acid Assisted Brønsted Acid) derived from La(OTf)(3) and (S)-HOP has been developed as a new chiral Brønsted acid. This acid has been successfully applied as a catalyst to asymmetric protonation reactions of silyl enol ethers of 2-substituted cyclic ketones.
一种新型的路易斯碱容忍型 LBA(Lewis Acid Assisted Brønsted Acid),由 La(OTf)(3) 和 (S)-HOP 衍生而来,被开发为一种新型的手性 Brønsted 酸。这种酸已成功地应用于 2-取代环状酮的硅基烯醇醚的不对称质子化反应的催化剂。