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Digitale Medien

Preparation of enantiomerically pure pyrazolines by an enantioconvergent process (1991)

Bosum-Dybus, Annegrit ; Neh, Harribert

Weinheim : Wiley-Blackwell

Liebigs Annalen 1991 (1991), S. 823-825

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Details

ISSN: 0170-2041

Schlagwort(e): Insecticides, enantiomerically pure ; Enantioconvergent process ; Pyrazolines ; Chemistry ; Organic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Derivatization of insecticidally active rac-pyrazoline 2 with (1S)-(-)-camphanic acid chloride led to the separable diastereomers 3a and 3b. Regioselective cleavage to the enantiomerically pure pyrazolines 2a and 2b was achieved under mild conditions. Diastereomer 3b was transformed into diastereomer 3a by crystallization under equilibrating conditions making the overall process enantioconvergent.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jlac.1991199101139

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