Biocatalytically assisted preparation of antifungal chlorophenylpropanols
摘要:
Fermenting baker's yeast converts 4'-chloropropiophenone 1 and 3'-chloropropiophenone 2 into enantiopure (S)-(-)-1(4'-chlorophenyl)propan-1-ol (S)-3 and (S)-(+)-1-(3'-chlorophenyl)propan-1-ol (S)-4, respectively. Application of inhibitors and organic solvents as additives enhanced the enantiomeric excesses. Enantiopure compounds (R)-(+)-1-(4'-chlorophenyl)propan-1-of ((R)-3) and (R)-(+)-1-(3'-chlorophenyl)propan-1-ol (R)-4 were prepared by lipase-mediated esterifications of the racemic alcohols. Maximum inhibition of the growth of the phytopathougenic fungus Botrytis cinerea was shown for the (R)-enantiomers. (C) 2002 Elsevier Science Ltd. All rights reserved.
Rh-catalyzed asymmetric hydrogenation of α-aryl-β-alkylvinyl esters with chiral ferrocenylphosphine-phosphoramidite ligand
作者:Chao Dong、Dao-Sheng Liu、Lei Zhang、Xiang-Ping Hu
DOI:10.1016/j.tetlet.2020.152763
日期:2021.2
An enantioselective Rh-catalyzedhydrogenation of E/Z mixtures of trisubstituted vinyl esters has been disclosed. With a combination of [Rh(COD)2]BF4 and a structurally fine-tuning chiral ferrocenylphosphine-phosphoramidite ligand as the catalyst, a variety of E/Z mixtures of α-aryl-β-alkylvinyl esters have been successfully hydrogenated in high yields and with good to high enantioselectivities (up
Biocatalytically assisted preparation of antifungal chlorophenylpropanols
作者:Antonio J. Bustillo、Josefina Aleu、Rosario Hernández-Galán、Isidro G. Collado
DOI:10.1016/s0957-4166(02)00415-9
日期:2002.8
Fermenting baker's yeast converts 4'-chloropropiophenone 1 and 3'-chloropropiophenone 2 into enantiopure (S)-(-)-1(4'-chlorophenyl)propan-1-ol (S)-3 and (S)-(+)-1-(3'-chlorophenyl)propan-1-ol (S)-4, respectively. Application of inhibitors and organic solvents as additives enhanced the enantiomeric excesses. Enantiopure compounds (R)-(+)-1-(4'-chlorophenyl)propan-1-of ((R)-3) and (R)-(+)-1-(3'-chlorophenyl)propan-1-ol (R)-4 were prepared by lipase-mediated esterifications of the racemic alcohols. Maximum inhibition of the growth of the phytopathougenic fungus Botrytis cinerea was shown for the (R)-enantiomers. (C) 2002 Elsevier Science Ltd. All rights reserved.