Enantiomeric resolution of fluorous mixture by chiral CD columns: asymmetric reduction of a mixture of fluorous ketones
摘要:
Asymmetric reduction of a mixture of four fluorous ketone analogues was carried out with (R)-oxazaborolidine as a catalyst. The fluorous mixture products were resolved by a reverse phase HPLC with chiral beta-cyclodextrin column to result in good separation of the enantiomers. (C) 2003 Elsevier Ltd. All rights reserved.
Enantiomeric resolution of fluorous mixture by chiral CD columns: asymmetric reduction of a mixture of fluorous ketones
摘要:
Asymmetric reduction of a mixture of four fluorous ketone analogues was carried out with (R)-oxazaborolidine as a catalyst. The fluorous mixture products were resolved by a reverse phase HPLC with chiral beta-cyclodextrin column to result in good separation of the enantiomers. (C) 2003 Elsevier Ltd. All rights reserved.
Copper catalyzed grignard cross-coupling reaction with β-perfluoroalkyl-substituted alkyl halides
作者:Rie Shimizu、Eiichi Yoneda、Takamasa Fuchikami
DOI:10.1016/0040-4039(96)01155-0
日期:1996.7
Coupling reaction of β-perfluoroalkyl-substituted alkylhalides with Grignardreagents such as phenyl-, vinyl-, allyl-, benzyl-, and alkyl-magnesium halides was catalyzed by copper salts or complexes to give the corresponding cross-coupling products in good yields. α,ω-Diiodoalkane bearing a polyfluoroalkylene moiety also reacted with 2 equiv. of Grignardreagent in the presence of copper catalyst
Asymmetric reduction of a mixture of four fluorous ketone analogues was carried out with (R)-oxazaborolidine as a catalyst. The fluorous mixture products were resolved by a reverse phase HPLC with chiral beta-cyclodextrin column to result in good separation of the enantiomers. (C) 2003 Elsevier Ltd. All rights reserved.