BRUNNER, H and ZANG, EL (1993) ENANTIOSELECTIVE CATALYSIS .84. NEW CHIRAL TADDOLS FOR THE ENANTIOSELECTIVE ADDITION OF DIETHYLZINC TO BENZALDEHYDE CATALYZED BY TI(IV). ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 48 (12). pp. 1723-1726. ISSN 0932-0776,
Full text not available from this repository.Abstract
The new chiral ligands (4R,5 R)-2,2-dimethyl-a,a,a',a'-tetra(p-N,N-dimethylamino- phenyl)-1,3-dioxolane-4,5-dimethanol and [(4R,5R)-2,2-dimethyl-a,a,a',a'-tetra(p-triphenylphosphoniumphenyl)-1,3-dioxolane-4,5-dimethanol]X(4) (X = I, BPh(4)) have been synthesized and characterized. Their catalytic efficiency has been tested in the reaction of benzaldehyde and diethylzinc in the presence of Ti((OPr)-Pr-i)(4). Enantioselectivities up to S/R = 98.7 : 1.3 have been observed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ALDEHYDES; COMPLEXES; REAGENTS; OPTICALLY ACTIVE LIGANDS; ENANTIOSELECTIVE ALKYLATION; TITANIUM COMPLEXES |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/53663 |
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