Chiral Tricationic Tris(1,2-diphenylethylenediamine) Cobalt(III) Hydrogen Bond Donor Catalysts with Defined Carbon/Metal Configurations; Matched/Mismatched Effects upon Enantioselectivities with Enantiomeric Chiral Counter Anions
作者:Connor Q. Kabes、William J. Maximuck、Subrata K. Ghosh、Anil Kumar、Nattamai Bhuvanesh、John A. Gladysz
DOI:10.1021/acscatal.9b05496
日期:2020.3.6
salts Λ- or Δ-[Co((S,S)-dpen)3]3+ 2Cl–BArf– (Λ- or Δ-(S,S)-13+ 2Cl–BArf–; dpen/BArf = 1,2-diphenylethylenediamine/B(3,5-C6H3(CF3)2)4) and Λ-(S,S)-13+ 3Cl– are treated with salts of the enantiopure chiral monoanions (A–) or dianions (A2–) 3-bromocamphor-8-sulfonate (camphSO3–), 1,1′-binaphthyl-2,2′-diyl phosphate (and three 3,3′-disubstituted derivatives), a related biphenanthryl species, tartrate,
对映纯盐和非对映纯盐Λ-或Δ-[Co((S,S)-dpen)3 ] 3+ 2Cl – BAr f –(Λ-或Δ-(S,S)-1 1 + 3Cl 2Cl – BAr f – ; dpen / BAr f = 1,2-二苯基乙二胺/ B(3,5-C 6 H 3(CF 3)2)4)和Λ-(S,S)-1 3+ 3Cl –与对映体纯的手性单阴离子的盐(A处理-或二价阴离子(A)2-(camphSO)3-溴樟脑-8-磺酸3 - ),磷酸三萘-2,2'-二基-1,1'-(和3,3'-二取代的衍生物),将关联的biphenanthryl物种,酒石酸盐,及Sb 2(馅饼')2 2-(馅饼'= [ - ö 2 C-CHO - -CHO - -CO 2 - ])。亲脂性盐Λ-或Δ-(S,S)-1 3+ 2A – BAr f –,Λ-(S,S)-1 3+ A 2– BAr f –和Λ-(S,S)-1 3+ 3A