Abstract
EXCEPT for Pasteur's original procedure of sorting crystals by hand, the methods practised or suggested for the preparation of substances in optically active form depend on the use of a dissymmetric substance in one of its enantiomorphous forms or on the application of some dissymmetric influence. A recent extension1 of the hand-sorting process does not require the use of d- or l-materials or sorting of crystals by enantiomorphous faces. It has been applied only to trithymotide, a substance of molecular constitution lately elucidated2. A second extension now applies to a range of substances.
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References
Newman, A. C. D., and Powell, H. M., see reference (2) footnote, and J. Chem. Soc. (in publication).
Wilson Baker, Gilbert B., and Ollis, W. D., J. Chem. Soc., 1443 (1952).
Powell, H. M., J. Chem. Soc., 61 (1948).
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POWELL, H. New Procedures for Resolution of Racemic Substances. Nature 170, 155 (1952). https://doi.org/10.1038/170155a0
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DOI: https://doi.org/10.1038/170155a0
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