3a,6‐Dihydro‐3H‐imidazo[1,2‐d]tetrazoles from 1‐ and 4‐Phenacyl‐1H‐tetrazolium Salts and Ammonia
Treatment of the tetrazolium salts 1 with aqueous ammonia affords the novel ring system 2 (in certain cases along with the ylides 3). The structure of 2 has been confirmed by an X‐ray analysis of 2a.
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