sulfur dioxide in water
addn. of Co(OH)2 to DL-alanine in H2O; hot filtration after boiling for 5 h; concn. and storing of the filtrate; pptn. of violet DL-(Coal3); suspn. of the residue of the first filtration in H2O; treatment with SO2;; solving in 12 M H2SO4 soln., repptn. with H2O, washing + drying in air;;
参考文献
Holtzclaw, H. F.; Scheetz, D. P.
Journal of the American Chemical Society, 1953 , p. 3053 - 3058
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Gmelin Handbook: Co: SVol.B2, 152, page 651 - 653
in potassium hydroxide
mixing a mixt. of DL-alanine + (Coa6)Cl3 solns. with 3 n KOH soln. in small excess; heating; pptn. of red dl-(Coal3); evapn. of the mother liquor leads to violet DL-(Coal3);;
参考文献
Mori, M.; Shibata, M.; Kyuno, E.; Kanaya, M.
Bulletin of the Chemical Society of Japan, 1961 , vol. 34, p. 1837 - 1842
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Gmelin Handbook: Co: SVol.B2, 152, page 651 - 653
