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Eine Suspension von 128 g (1 Mol) Phthalsaure-dinitril, 600g Isobutylalkohol und 20 g Wasser wird unter Ruhren bei Raumtemp. rnit
Chlorwasserstff gesattigt¡£Nach. Stehenlassen iiber Nacht saugt man das grobe Kristallgut ab, wascht anhaftenden Chlorwassetstoff mit
wenig lsobutylalkohol aus und trocknet bei 70". Ausb. 170 g (93%) blaBgelbe, wasserlosliche Kristalle, die sich bei 240-250" zersetzen (Lit.3): 230",Zers.).
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