Enantioselective potential of polysaccharide-based chiral stationary phases in supercritical fluid chromatography
作者:Gabriela Kucerova、Kveta Kalikova、Eva Tesarova
DOI:10.1002/chir.22701
日期:2017.6
cellulose‐based chiralstationaryphase were achieved particularly with propane‐2‐ol and a mixture of isopropylamine and trifluoroacetic acid as organic modifier and additive to CO2, respectively. Methanol and basic additive isopropylamine were preferred on amylose‐based chiralstationaryphase. The complementary enantioselectivity of the cellulose‐ and amylose‐based chiralstationaryphases allows separation
An asymmetric aminalization of 2‐aminobenzenesulfonamides and aldehydes with cyclopentadiene‐basedchiral carboxylic acid as a catalyst has been developed.
已经开发了基于环戊二烯的手性羧酸作为催化剂的2-氨基苯磺酰胺和醛的不对称缩醛化反应。
Direct Catalytic Asymmetric Synthesis of Cyclic Aminals from Aldehydes
作者:Xu Cheng、Sreekumar Vellalath、Richard Goddard、Benjamin List
DOI:10.1021/ja8071034
日期:2008.11.26
A highly enantioselective Bronsted acid catalyzed direct synthesis of cyclic aminals from aldehydes has been developed. The methodology has been applied to the first asymmetric synthesis of several anti hypertensive aminal drugs including (R)-Thiabutazide.