Chiral 1,4-bis-diphosphine ligands from optically active (Z)-olefines

DOI: 10.1016/j.tetasy.2007.04.018

Source and publish data:

Tetrahedron Asymmetry p. 1278 - 1283 (2007)

Update date:2022-08-04

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Authors:

Cesarotti, Edoardo

Rimoldi, Isabella

Spalluto, Paola

Demartin, Francesco

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Article abstract of DOI:10.1016/j.tetasy.2007.04.018

The catalytic asymmetric hydrogenation of prochiral ketones was carried out with Ru(II) complexes prepared from new chiral diphosphine ligands, cis-(R,R)-2,5-bis[(diarylphosphino)]-3-hexenes. These new ligands were prepared from enantiomerically pure (R,R) or (S,S)-(Z)-3-hexene-2,5 diol and enantiomeric excesses up to 85% were obtained in the reduction of 2-benzamidomethyl-3-oxobutanoate, starting material for the synthesis of 4-acetoxy-2-azetidinone.

Full text of DOI:10.1016/j.tetasy.2007.04.018

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