Aminocyclopentadienyl Ruthenium Complexes as Racemization Catalysts for Dynamic Kinetic Resolution of Secondary Alcohols at Ambient Temperature
作者:Jun Ho Choi、Yoon Kyung Choi、Yu Hwan Kim、Eun Sil Park、Eun Jung Kim、Mahn-Joo Kim、Jaiwook Park
DOI:10.1021/jo0355799
日期:2004.3.1
tests in the racemization of (S)-4-phenyl-2-butanol showed that 7 is the most active catalyst, although the difference decreased in the DKR. Complex 4 was used in the DKR of various alcohols; at room temperature, not only simple alcohols but also functionalized ones such as allylic alcohols, alkynyl alcohols, diols, hydroxyl esters, and chlorohydrins were successfully transformed to chiral acetates. In
Aminocyclopentadienyl钌复合物,其可以用作常温消旋催化剂与在动态动力学拆分仲醇的(DKR),脂肪酶是从环戊-2,4- dienimines合成的Ru 3(CO)12,和CHCl 3: [2,3,4,5-PH 4(η 5 -C 4 CNHR)]的Ru(CO)2 Cl(上4:R =我-Pr; 5:R = ñ -Pr; 6:R =吨-Bu ),[2,5-ME 2 -3,4--PH 2(η 5 -C 4 CNHR)]的Ru(CO)2 Cl(上7:R = i -Pr; 8:R = PH),和[2,3,4,5-PH 4(η 5 -C 4 CNHAr)]的Ru(CO)2 Cl(上9:Ar为p -NO 2 ç 6 ħ 4 ; 10: Ar =p- ClC 6 H 4;11:Ar = Ph;12:Ar =p- OMeC 6 H 4;13:Ar =p- NMe 2 C 6 H 4)。外消旋