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ChemicalBook CAS DataBase List 3,5-Dichlorophenylhydrazine hydrochloride
63352-99-8

3,5-Dichlorophenylhydrazine hydrochloride synthesis

2synthesis methods
-

Yield:-

Reaction Conditions:

with hydrogenchloride in 1,4-dioxane;methanol at 90; for 2 h;

Steps:

Conversion of oxamic adducts (1a-e) to hydrazines
General procedure: The adduct 1x was dissolved in methanol (x mL) to make 0.2 M solution, to this, was added 4 M hydrochloric acid in dioxane (x/2 mL). The dark solution was then stirred at reflux for 2 hours before removing from the heat. Once cool enough ~5-10 volumes of diethyl ether are added to create a profusion of fluffy solid which are filtered and washed to provide the hydrazine hydrochlorides.

References:

Browne, Duncan L.;Baxendale, Ian R.;Ley, Steven V. [Tetrahedron,2011,vol. 67,# 52,p. 10296 - 10303] Location in patent:supporting information; experimental part

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