Kinetic Resolution of Secondary Carbinols by a Chiral<i>N</i>,<i>N</i>-4-Dimethylaminopyridine Derivative Containing a 1,1′-Binaphthyl Unit: Hydrogen Bonding Affects Catalytic Activity and Enantioselectivity
作者:Kazuki Fujii、Koichi Mitsudo、Hiroki Mandai、Seiji Suga
DOI:10.1246/bcsj.20160135
日期:2016.9.15
We developed an acylative kinetic resolution of secondary carbinols using a binaphthyl-based N,N-4-dimethylaminopyridine (DMAP) derivative 1d with tert-alcohol substituents. The reaction proceeded with a wide range of carbinols with moderate to high selectivity (s) (up to s = 79.5). Kinetic studies revealed that catalyst 1d was more catalytically active than the corresponding bis-methyl ether 1d′ or
我们使用具有叔醇取代基的联萘基 N,N-4-二甲氨基吡啶 (DMAP) 衍生物 1d 开发了仲甲醇的酰化动力学拆分。反应在范围广泛的甲醇中进行,具有中到高的选择性 (s)(高达 s = 79.5)。动力学研究表明,催化剂 1d 比相应的双甲基醚 1d' 或 DMAP 具有更高的催化活性。催化剂的叔醇和仲甲醇之间的氢键是提高反应速率和高对映选择性的原因。