BRUNNER, H and SINGH, UP and BOECK, T and ALTMANN, S and SCHECK, T and WRACKMEYER, B (1993) ASYMMETRIC CATALYSIS .80. AN OPTICALLY-ACTIVE TETRAKISPYRAZOLYLBORATE - SYNTHESIS AND USE IN CU-CATALYZED ENANTIOSELECTIVE CYCLOPROPANATION. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 443 (1). C16-C18. ISSN 0022-328X,
Full text not available from this repository.Abstract
The synthesis of the optically-active sodium salt of tetrakis(4,5,6,7-tetrahydro-7,8,8-trimethyl-2H-4,7-methanoindazolyl)borate, [NaB-(camphpz)4] (1) is reported. Cu-based in situ catalysts containing [NaB(camphpz)4] give an enantiomeric excess of up to 62% in the enantioselective cyclopropanation of styrene with ethyl diazoacetate.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHIRAL HETEROCYCLIC LIGANDS; PYRAZOLE-DERIVED LIGANDS; COORDINATION CHEMISTRY; COMPLEXES; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54156 |
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