N 1) B. 49, 1896 [1916]. x, Helv. chim. Acta 4, 212 [1921]. A. 496, 113 [1932]. 4) B. 66, 1183 [I932].0 ) Einen tfberblick habe ich a m 13. Marz 1920 in einem Vortrage vor der Gottinger Chemischen Gesellschaft gegeben. Hr. K. Freudenberg erhielt Ende Juli d. J . durch mich Kenntnis von useren Versuchen. 6, Dtsch. Reichs-Pat.-Anmeld. vom 22. Januar 1932. H. Wienhaus. 7 B. 84. 2899 [I9311. B. 66, 265 [1932]. B) B. 46, 1654, 2617 [I~IZ]; vergl. auch H. Staudinger, L. Hammet u. J . Siegwart, Helv. chim. Acta 4. 228 jIgzI].
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