2-Azido-1, 3-dimethylimidazolinium salts: efficient diazo-transfer reagents for 1, 3-dicarbonyl compounds

M Kitamura, N Tashiro, S Miyagawa, T Okauchi

Index: Kitamura, Mitsuru; Tashiro, Norifumi; Miyagawa, Satoshi; Okauchi, Tatsuo Synthesis, 2011 , # 7 p. 1037 - 1044

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Citation Number: 26

Abstract

Abstract We have developed the diazo-transfer of 2-azido-1, 3-dimethylimidazolinium salts to 1, 3-dicarbonyl compounds. 2-Azido-1, 3-dimethylimidazolinium chloride (ADMC) was prepared by N-nitrosation of N-aminoguanidine or by the reaction of 2-chloro-1, 3- dimethylimidazolinium chloride (DMC) and sodium azide. The corresponding phosphate, ADMP, was isolated as a crystal, and was found to be a stable and safe reagent. Both ...