Summary
The racemic modification of 3-nitro-p-toluidinomethylenecamphor is a truedl-mixture whereas the racemic modifications of 5-iodo-o-toluidino-, 4-nitro-o-toluidino-, oxy-, 2-nitro-p-toluidino-, 3-nitro-4-chloroanilino-, 2: 5-dichloroanilino-and 4-chloro-o-toluidino-methylenecamphors are all truedl-compounds.
The stability of the racemic forms is also discussed.
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References
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Singh, B.K., Tewari, R.K. Studies on the nature of the racemic modifications of optically active compounds in the solid state. Proc. Indian Acad. Sci. (Math. Sci.) 25, 389 (1947). https://doi.org/10.1007/BF03171413
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DOI: https://doi.org/10.1007/BF03171413