Synthesis and some properties of vicinal bis(difluoramino)carboxylic acids

1.	A practicable method for the synthesis of vicinal bis(difluoramino)-containing carboxylic acids by reacting tetrafluorohydrazine with unsaturated acids has been developed.
2.	,-Bis(difluoramino)carboxylic acids are unstable and undergo decarboxylation followed by dehydrofluorination.
3.	,-Bis(difluoramino)carboxylic acids are fairly stable and in some cases display the properties of ordinary carboxylic acids.