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3-(TRIFLUOROMETHOXY)BENZHYDRAZIDE synthesis

4synthesis methods
3-(Trifluoromethoxy)benzoic acid ethyl ester

677713-01-8
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3-(TRIFLUOROMETHOXY)BENZHYDRAZIDE

321195-88-4
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Yield:321195-88-4 96%

Reaction Conditions:

with hydrazine hydrate in ethanol; for 16 h;Reflux;

Steps:

1.3 Step 3. Synthesis of 3-(trifluoromethoxy)benzohydrazide:

A mixture of ethyl 3-(trifluoromethoxy)benzoate (1.0 g, 4.27 mmol), hydrazine hydrate (5.0 mL) in ethanol (EtOH) (50.0 mL) was heated at reflux for 16 h. The mixture was concentrated under vacuum to give 3-(trifluoromethoxy)benzohydrazide (0.9 g, yield 96%). MS (ESI) calcd for C8H7F3N2O2: 220.05.

References:

WO2013/59589,2013,A1 Location in patent:Page/Page column 79

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