A new family of chiral phosphorus ligands (5) for use in enantioselective catalysis have been synthesised. The ligands contain the electron-poor bis(sulfonyl)diazaphospholidine moiety and possess a highly modular structure which is well suited to the synthesis of a library. A small library (23 members) of ligands 5 was prepared and tested in the enantioselective copper-catalysed conjugate addition of diethylzinc to cyclohexenone. Complete conversions were obtained with enantiomeric excesses (ee) of up to 75%.

A Modular Approach to a New Class of Monodentate Chiral Phosphorus Ligands, and their Application in Enantioselective Copper-Catalysed Conjugate Additions of Diethylzinc to Cyclohexenone / C. Monti, C. Gennari, R. M. Steele, U. Piarulli. - In: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. - ISSN 1434-193X. - :16(2004), pp. 3557-3565. [10.1002/ejoc.200400227]

A Modular Approach to a New Class of Monodentate Chiral Phosphorus Ligands, and their Application in Enantioselective Copper-Catalysed Conjugate Additions of Diethylzinc to Cyclohexenone

C. Monti
Primo
;
C. Gennari
Secondo
;
R. M. Steele
Penultimo
;
2004

Abstract

A new family of chiral phosphorus ligands (5) for use in enantioselective catalysis have been synthesised. The ligands contain the electron-poor bis(sulfonyl)diazaphospholidine moiety and possess a highly modular structure which is well suited to the synthesis of a library. A small library (23 members) of ligands 5 was prepared and tested in the enantioselective copper-catalysed conjugate addition of diethylzinc to cyclohexenone. Complete conversions were obtained with enantiomeric excesses (ee) of up to 75%.
Asymmetric catalysis; Copper; Enones; Michael addition; P ligands
Settore CHIM/06 - Chimica Organica
2004
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/143588
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