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.
Palladium catalyzed coupling reactions of β-perfluoroalkyl-substituted alkyl halides with organostannanes
作者:Rie Shimizu、Takamasa Fuchikami
DOI:10.1016/0040-4039(96)01922-3
日期:1996.11
β-Perfluoroalkyl-substituted alkylhalides reacted with organostamnanes such as allylphenylethynyl-, β-phenylethenyl-, and phenyl-tributyltin in the presence of palladium-phosphine complexes to give the corresponding cross-coupling products in good yields. When the reaction was carried out under CO pressure, carbonylative coupling of the halides took place affording the corresponding fluorine-contaming