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68.1g 1 werden in 300 ml Ethanol und 200 ml Wasser suspendiert und mit 625 g  20%iger Natriumsulfitl§Ûsung sowie 160 g %%iger Natronlauge versetzt.
Nach 2h Ruhren werden 500g Eis und 50g NaCl zugegeben.      Danach wird filtriert, das Filtrat mit 500 g Eis versetzt und mit Essigsaure angesauert.      Das ausgefallene Produkt 2 wird abgetrennt mnit Eiswasser gewaschen und im Vakuum uber KOH getrocknet.

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