Abstract

The authors use NMR spectroscopy to study mono-and bistrimethylsilyl derivatives of N'-methyl- and N',N'-dimethylhydrazides of acetic acid. Two isomers in mobile equilibrium are found for both compounds in the temperature range from -80 to +100 C. It is shown that the trimethylsilylated N',N'-dimethylhydrazide of acetic acid is an equilibrium mixture of the syn and anti isomers of the hydrazone form, while the N,N'-bistrimethylsilyl-N'-methylhydrazide of acetic acid exists as an equilibrium mixture of N and O isomers.

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