133796-97-1Relevant academic research and scientific papers
NMR analysis of chiral alcohols and amines: Development of an environmentally benign "in tube" procedure with high efficiency and improved detection limit
Orlov, Nikolay V.,Ananikov, Valentine P.
supporting information; experimental part, p. 1735 - 1744 (2011/09/13)
A fast and efficient approach was developed for the NMR analysis of chiral alcohols and amines using readily available enantiopure MPA (α-methoxy- α-phenylacetic acid) and MTPA (α-methoxy-α- trifluoromethylphenylacetic acid) as chiral derivatizing agents. The procedure requires less than 5 min (including sample preparation time) for analysis using routine NMR hardware and allows accurate measurements for 0.01 mg of the sample of chiral compounds. Direct "in tube" analysis can be performed with high efficiency to determine enantiomeric purity and absolute configuration, as well as to monitor reactions in asymmetric synthesis and catalysis. The developed procedure is superior in terms of waste-free analysis of chiral compounds for environmentally benign applications.
Pigments of Fungi. Part 38. Synthesis of Austrocorticinic Acid and (S)-(-)-Austrocorticin; Absolute Stereochemistry of Natural Austrocorticin
Cotterill, Ann S.,Gill, Melvyn,Gimenez, Alberto,Milanovic Nives M.
, p. 3269 - 3276 (2007/10/02)
The absolute configuration of the fungal anthraquinone (+)-austrocorticin 1 is established as (R) by synthesis of its antipode from (S)-(-)-but-3-yn-2-ol via a Diels-Alder reaction involving the highly functionalised, chiral butadiene 6.Similarly, austrocorticinic acid is made available from but-1-yne.
