Synthesis of stereocontrolled α,α-difluoro-β-hydroxycarbonyl materials
摘要:
Synthesis and synthetic utilities of stereocontrolled alpha, alpha-di fluoro-beta-hydroxy-gamma,delta-unsaturated carbonyl compounds via enzymatic resolution with lipase PS (Pseudomonas cepacia, Amano Pharmaceutical Co. Ltd.) or lipase MY (Candida rugosa, Meito Sangyo Co. Ltd.) were described, and then the absolute configuration of obtained chiral materials was determined by the modified Mosher's method. (C) 2004 Elsevier B.V. All rights reserved.
α,α-Difluoro-α-(trimethylsilyl)acetamides as Versatile Reagents for the Preparation of Difluorinated Aldol and Mannich Adducts
作者:Aurélien Honraedt、Arie Van Der Lee、Jean-Marc Campagne、Eric Leclerc
DOI:10.1002/adsc.201700371
日期:2017.8.17
The very efficient addition of α,α‐difluoro‐α‐(trimethylsilyl)acetamides to aldehydes, ketones and N‐(tert‐butanesulfinyl)imines is described. The reaction is promoted by a catalytic amount of tetra‐n‐butylammonium diphenyltrifluorosilicate (TBAT) and high yields, as well as very high stereoselectivities in the case of N‐(tert‐butanesulfinyl)imines, are achieved. The synthetic potential of this method
Synthesis of stereocontrolled α,α-difluoro-β-hydroxycarbonyl materials
作者:Takeshi Kaneda、Shinya Komura、Tomoya Kitazume
DOI:10.1016/j.jfluchem.2004.09.026
日期:2005.1
Synthesis and synthetic utilities of stereocontrolled alpha, alpha-di fluoro-beta-hydroxy-gamma,delta-unsaturated carbonyl compounds via enzymatic resolution with lipase PS (Pseudomonas cepacia, Amano Pharmaceutical Co. Ltd.) or lipase MY (Candida rugosa, Meito Sangyo Co. Ltd.) were described, and then the absolute configuration of obtained chiral materials was determined by the modified Mosher's method. (C) 2004 Elsevier B.V. All rights reserved.