METHOD FOR PRODUCING 2,6-DICHLOROPURINE
作者： Oguchi Tetsushi , Komatsu Fumiyoshi , Kawachi Junichi
DOI:
关键词: Chlorine 、 Materials science 、 Hydrochloride 、 Hydrochloric acid 、 Mixing (process engineering) 、 Nuclear chemistry 、 Suspension (chemistry) 、 Methyl hypochlorite 、 Yield (chemistry)
摘要: PROBLEM TO BE SOLVED: To provide a method for producing 2,6-dichloropurine, by which the 2,6-dichloropurine can be obtained in high yield, while inhibiting by-production of explosible methyl hypochlorite and like. SOLUTION: This comprises mixing 2,6-dithiopurine with hydrochloric acid to obtain an alcohol-free suspension, blowing chlorine suspension hydrochloride solution, cooling solution crystallize hydrochloride, suspending crystals water, raising pH ≥8 dissolve then adjusting 4 7 purify 2,6-dichloropurine. COPYRIGHT: (C)2009,JPO&INPIT
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Junichi Nishikawa, Naruhito Masai, Istvan Barta, Takehiko Kawakami, Taketo Hayashi, Hiroharu Kumazawa, Process for producing 2,6-dihalogenopurine ,(2002)
Hayashi Taketo, Nishikawa Junichi, Kumazawa Yoji, PRODUCTION METHOD OF 2,6-DICHLOROPURINE ,(2002)