Tri- and tetrasubstituted α-fluorocyclohexanones with enantiomeric excesses in the range of 97–100%
作者:Arlette Solladié-Cavallo、Loı̈c Jierry、Laëtitia Bouérat、Philippe Taillasson
DOI:10.1016/s0957-4166(01)00118-5
日期:2001.4
The alpha -fluorinated trisubstituted ketones (2S,5R)-(-1-7-Ia. (2R,5R)-(+)-7-IIe. (2S,5R)-(-)-8-Ia and (2R.5R)-(+)-8-IIe were synthesised from (+)-dihydrocarvone (99%, (R)-configuration at C-5) and fully characterised. alpha -Fluorinated tetrasubstituted ketones (-)-9-Ia, (+)-9-Ia, (+)-9-IIa and (+)-10-Ia having e.e.s of greater than or equal to 97% were synthesised as racemates from 3-methyl cyclo-hexenone then resolved into the pure enantiomers using chiral HPLC and fully characterised. (C) 2001 Published by Elsevier Science Ltd.