Direct one step mono-functionalisation of symmetrical 1,2-diols
摘要:
The mono-functionalisation of meso- and C-2-symmetric diols has been achieved via the use of a new lanthanide(III) chloride catalysed acylation reaction. (C) 2000 Elsevier Science Ltd. All rights reserved.
A method for determining the enantiomeric purity of profens
摘要:
A simple method for determining the enantiomeric purity of profens (based on the carbon skeleton of 2-phenylpropionic acid) is discussed. The enantiomeric purity of a given profen can be determined by stereospecific DCC self-coupling to give a statistical diastereoisomeric mixture of racemic and meso- anhydrides. The relative ratio of diastereoisomers formed can be related to the enantiomeric excess of the original carboxylic acid. (C) 2009 Elsevier Ltd. All rights reserved.