Synthesis of new alpha-hydrazinoarylacetic acids and derivatives.
The synthesis of some alpha-hydrazinoarylacetic acids (I) by reaction of alpha-bromoarylacetic acids with hydrazine, alkylhydrazines and carbobenzyloxyhydrazines is described. Reduction of the hydrazones of 2- and 3-thienylglyoxylic acids provided a general and effective route to the thienylic series. In view of the use of compounds (I) for the preparation of new penicillins, the experimental conditions for their conversion into cyclohexylamides (XI) via the corresponding carbobenzyloxyderivatives (III) were also investigated.
D000085:Acetates / Q000138:chemical synthesis*; D002855:Chromatography, Thin Layer; D006834:Hydrazines / Q000138:chemical synthesis*; D006835:Hydrazones; D007202:Indicators and Reagents; D010084:Oxidation-Reduction; D010659:Phenylhydrazines / Q000138:chemical synthesis; D013055:Spectrophotometry, Infrared; D013696:Temperature
D000085:Acetates; D006834:Hydrazines; D006835:Hydrazones; D007202:Indicators and Reagents; D010659:Phenylhydrazines