Highly Enantioselective Copper-Phosphoramidite Catalyzed Kinetic Resolution of Chiral 2-Cyclohexenones
作者:Robert Naasz、Leggy A. Arnold、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1002/1521-3773(20010302)40:5<927::aid-anie927>3.0.co;2-k
日期:2001.3.2
obtained enantiomerically pure by employing the chiral copper-phosphoramidite complex [Cu(OTf)2 L*] as a highly efficient catalyst for their kinetic resolution (>99 % ee at 52 % conversion, selectivity S>200). These important building blocks can be obtained on a synthetically interesting scale, as was demonstrated by the successful multigram resolution of 5-methyl-2-cyclohexenone. Tf=trifluoromethanesulfonyl
通过使用手性铜-亚磷酰胺络合物[Cu(OTf)2 L *]作为其动力学拆分的高效催化剂,可以得到对映体纯的多种取代的2-环己酮,如(R)-1 (> 99% ee,转化率为52%,选择性S> 200)。这些重要的结构单元可以以合成有趣的规模获得,如成功的5-甲基-2-环己烯酮的克数解析度所证明的那样。Tf =三氟甲磺酰基。