BRUNNER, H and WUTZ, K (1992) ENANTIOSELECTIVE CATALYSIS .57. OPTICALLY-ACTIVE BINAPHTHYL DERIVATIVES IN THE CU-CATALYZED ENANTIOSELECTIVE CYCLOPROPANATION. NEW JOURNAL OF CHEMISTRY, 16 (1-2). pp. 57-61. ISSN 1144-0546,
Full text not available from this repository.Abstract
Starting from 2,2'-dihydroxy-1,1'-binaphthyl-3,3'-dicarboxylic acid the optically active aldehyde 2,2'-dihydroxy-3-formyl-3'-hydroxymethyl-1,1-binaphthyl was obtained in 52% yield. Seven optically active Schiff bases were synthesized by reaction of different binaphthylcarbaldehydes with (2R)-(-)-2-amino-1,1'-bis(5-tert-butyl-2-n-octyloxyphenyl)propan-1-ol or ethylenediamine, which served as cocatalysts in the Cu-catalyzed enantioselective cyclopropanation of styrene with ethyl and methyl diazoacetate. Optical inductions of up to 79% ee were achieved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DIAZO-COMPOUNDS; COMPLEXES; OPTICAL ACTIVITY; ENANTIOSELECTIVITY; BINAPHTHYL LIGANDS; CYCLOPROPANATION; CU-CATALYSIS |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54724 |
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