Article ID Journal Published Year Pages File Type
1345227 Tetrahedron: Asymmetry 2015 6 Pages PDF
Abstract

The complex of [Ir(COD)Cl]2 and (R)-xylyl-phanephos was used as an effective catalyst for the asymmetric ring opening reaction of oxabenzonorbornadienes with various amines. Under the optimized reaction conditions, high enantioselectivities with moderate to good yields could be obtained from a wild scope of oxabenzonorbornadienes and amines.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

(1R,2R)-2-(Methyl(phenyl)amino)-1,2-dihydronaphthalen-1-olC17H17NOee: 96% (HPLC, Chiralcel OD-H)[α]D22 = +31.5 (c 0.34, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-(Ethyl(phenyl)amino)-1,2-dihydronaphthalen-1-olC18H19NOee: 97% (HPLC, Chiralcel OD-H)[α]D22 = −16.7 (c 0.502, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-(Isopropyl(phenyl)amino)-1,2-dihydronaphtha-len-1-olC19H21NOee: 96% (HPLC, Chiralcel OD-H)[α]D22 = −66.3 (c 0.228, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-((4-Bromophenyl)(methyl)amino)-1,2-dihydronaphthalen-1-olC17H16BrNOee: 95% (HPLC, Chiralcel AD-H)[α]D22 = +75.4 (c 0.130, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-((4-Methoxyphenyl)(methyl)amino)-1,2-dihydronaphthalen-1-olC18H19NO2ee: 97% (HPLC, Chiralcel OD-H)[α]D22 = +21.5 (c 0.0744, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-(Methyl(naphthalen-2-yl)amino)-1,2-dihydronaphthalen-1-olC21H19NOee: 97% (HPLC, Chiralcel OD-H)[α]D22 = +48.5 (c 0.109, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-(Dibenzylamino)-1,2-dihydronaphthalen-1-olC24H23NOee: 88% (HPLC, Chiralcel OD-H)[α]D22 = −68.8 (c 0.247, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-(4-Phenylpiperazin-1-yl)-1,2-dihydronaphtha-len-1-olC20H22N2Oee: 84% (HPLC, Chiralcel OD-H)[α]D22 = −107.6 (c 0.341, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-(Phenylamino)-1,2-dihydronaphthalen-1-olC16H15NOee: 92% (HPLC, Chiralcel AD-H)[α]D22 = −68.8 (c 0.032, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-(p-Tolylamino)-1,2-dihydronaphthalen-1-olC17H17NOee: 90% (HPLC, Chiralcel AD-H)[α]D22 = −100.4 (c 0.243, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-((4-Methoxyphenyl)amino)-1,2-dihydronaphthalen-1-olC17H17NO2ee: 89% (HPLC, Chiralcel AD-H)[α]D22 = −80.3 (c 0.0648, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-((3-Bromophenyl)amino)-1,2-dihydronaphthalen-1-olC16H14BrNOee: 94% (HPLC, Chiralcel AD-H)[α]D22 = −75.5 (c 0.11, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-2-((4-Bromophenyl)amino)-1,2-dihydronaphthalen-1-olC16H14BrNOee: 96% (HPLC, Chiralcel AD-H)[α]D22 = −70.5 (c 0.095, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-6,7-Dimethyl-2-(methyl(phenyl)amino)-1,2-dihydronaphthalen-1-olC19H21NOee:97% (HPLC, Chiralcel OD-H)[α]D22 = +18.3 (c 0.278, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(5R,6R)-6-(Methyl(phenyl)amino)-5,6-dihydronaphtho[2,3-d][1,3]dioxol-5-olC18H17NO3ee:98% (HPLC, Chiralcel OD-H)[α]D22 = +11.6 (c 0.0865, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-6,7-Dibromo-2-(methyl(phenyl)amino)-1,2-dihydronaphthalen-1-olC17H15Br2NOee:86% (HPLC, Chiralcel OD-H)[α]D22 = +50.7 (c 0.412, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-5,8-Dimethyl-2-(methyl(phenyl)amino)-1,2-dihydronaphthalen-1-olC19H21NOee:98% (HPLC, Chiralcel OD-H)[α]D22 = −334 (c 0.628, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

(1R,2R)-5,8-Dimethoxy-2-(methyl(phenyl)amino)-1,2-dihydronaphthalen-1-olC19H21NO3ee: 97% (HPLC, Chiralcel AD-H)[α]D22 = −156.5 (c 0.20, CH2Cl2)Source of chirality: asymmetric synthesisAbsolute configuration: (1R,2R)

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
Authors
, , , , , ,