Lipase-Catalyzed Transesterification of 2-Hydroxy-2-(pentafluorophenyl)acetonitrile Leading to (1R,2R)- and (1S,2S)-Bis(pentafluorophenyl)ethane-1,2-diol
- 31 March 2000
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Organic Chemistry
- Vol. 65 (9) , 2740-2747
- https://doi.org/10.1021/jo9918551
Abstract
Optically pure (1R,2R)- and (1S,2S)-1,2-bis(pentafluorophenyl)ethane-1,2-diol (1) were synthesized from key intermediates (R)- and (S)-2-hydroxy-2-(pentafluorophenyl)acetonitrile (2), both of which were prepared by the lipase LIP-catalyzed transesterification (E = 465). The absolute configuration of (S)-2 was determined by X-ray structural analysis after transformation into (S)-alpha-cyano-2,3,4,5,6-pentafluorobenzyl (S)-6-methoxy-alpha-methyl-2-naphthaleneacetate (S,S)-9. In addition, the crystal structure of (S,S)-9 has an interesting well-ordered packing pattern which shows face-to-face stacking interactions and end-to-end parallel contacts between the pentafluorophenyl and 6-methoxynaphthyl groups of the adjacent molecules.Keywords
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