Hydrazine compounds, the typical products of IS Chemical Technology for custom synthesis.

How to Synthesize Hydrazine Compounds

To a mixture of phenylamine concentrated HCl was added a solution of NaNO2 water dropwise at -10 ℃. After addition, the mixture was stirred below -5 ℃ for 1 hour. Then to the mixture was added a solution of SnCl2.2H2O in con. HCl at -10 ℃. After addition the mixture was stirred below -5 ℃ for 3 hour. The reaction mixture was filtered, the cake was washed with ether, dried to give the target compound.

A mixture of halide in hydrazine monohydrate was refluxed for several hours. 10 N of aq. NaOH was added,and the mixture was extracted with EtOAc, the combined organic layers were dried over Na2SO4 and evaporated in vacuo to give the target compound.

A hexane solution containing the carbonyl compound and tert-butyl carbazate was heated to reflux for 20 min. When the solution cooled, the tert-butyl alkylidinecarbazate crystallized and was filtered. BH,.THF was added to the solid tert-butyl alkylidinecarbazate, which was allowed to stir for 10 min at room temperature. HCl(6 N) was then added dropwise to the reaction mixture.

The reaction mixture was heated for 10 min on the steam bath and then taken to dryness under reduced pressure. The residue was treated with tetrahydrofuran (20 mL) and boric acid was removed by filtration. Removal of the solvent under reduced pressure and a single crystallization from tetrahydrofuran ether gave the hydrazines as their hydrochloride salts.

The application of Hydrazine Compounds

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