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>Nitrosative cyclization of 1,3-dimethyl-6-(.ALPHA.-methylalkylidenehydrazino)uracils by means of N-nitrosodimethylamine-phosphorus oxychloride mixture. A new route to 2-vinyl-.UPSILON.-triazolo(4,5-d)pyrimidines.
【2h】
Nitrosative cyclization of 1,3-dimethyl-6-(.ALPHA.-methylalkylidenehydrazino)uracils by means of N-nitrosodimethylamine-phosphorus oxychloride mixture. A new route to 2-vinyl-.UPSILON.-triazolo(4,5-d)pyrimidines.