Absolute Configuration, Optical Purity, Asymmetric Synthesis, Resolution

Absolute Configuration, Optical Purity, Asymmetric Synthesis, Resolution.— 

Reviews of interest in this section concern methods of determining absolute 

Monteau, H. Huser, M. Guerin, and M. Gomel (a) J. Chem. Res. (S), 1978,256 (b) J. Chem. Res. (M), 1978, 3217. The former implies that camphor is used in this study but the latter only refers to fenchone. 

For the determination of the enantiomeric composition of some chiral acidic monoterpenoids, see the chromatography section below. 

The optical purity of chiral lactones [e.g. (19)] follows from H n.m.r. observation, in the presence of tris[trifluoromethylhydroxymethylene-(—)-camphorato]europium(iii), of the diols derived from treatment with methyl- 

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