Abstract

AbstractTriethoxy‐deuteriomethane is synthesized simply from deuterio‐chloroform and monodeuterio‐ethanol. The previously not described ethoxy‐[2H]methylene malononitrile can be prepared from the deuterated orthoester and dideuterio‐malononitrile. Ring closure with acetamidine in ethanol yields 4‐amino‐5‐cyano‐2‐methyl‐[6‐2H]pyrimidine without any loss of deuterium label.

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