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ChemicalBook CAS DataBase List 3'-Aminobenzanilide
16091-26-2

3'-Aminobenzanilide synthesis

12synthesis methods
N-(M-NITROPHENYL)BENZAMIDE

4771-08-8

3'-Aminobenzanilide

16091-26-2

The general procedure for the synthesis of m-aminobenzanilide from N-(3-nitrophenyl)benzamide was as follows: N-(3-nitrophenyl)benzamide (10a) was dissolved in ethanol (20 mL) and an aqueous solution of iron powder (2.5 g) and ammonium chloride (0.53 g, 10 mmol) was added. The reaction mixture was heated to reflux for 2 hours. After completion of the reaction, it was filtered while hot, the filtrate was collected and rotary evaporated to dryness. The resulting solid was dissolved in acetone, filtered to remove insoluble matter, the filtrate was collected and rotary evaporated to dryness to give m-aminobenzanilide (11a) in 89.8% yield.

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Yield: 92%

Reaction Conditions:

with copper(l) iodide;dimethylaminoacetic acid;potassium carbonate in N,N-dimethyl-formamide at 100; for 24 h;Schlenk technique;Inert atmosphere;Goldberg Reaction;

Steps:

3.3. General Procedure for the Coupling of Aryl Bromides with Amides Using Copper/N,N-DimethylglycineCatalytic System
General procedure: A Schlenk tube was charged with amide (1.2 mmol), aryl halide (1 mmol), CuI (0.05 or 0.1 mmol), N,N-dimethylglycine (0.1 or 0.2 mmol), and potassium carbonate (2 mmol). The tube was evacuated and backfilled with argon at room temperature. DMF (0.5 mL) was added under argon via syringe. The Schlenk tube was immersed in a preheated oil bath and the reaction mixture was stirred for the specified time at the indicated temperature. The cooled mixture was partitioned between water and ethyl acetate. The organic layer was separated and the aqueous layer was extracted with ethyl acetate.The combined organic layers were washed with brine, dried over Na2SO4, and concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluting with 1:8 to 1:2 ethyl acetate/petroleum ether) to give the the desired N-aryl amides.

References:

Jiang, Liqin [Molecules,2014,vol. 19,# 9,p. 13448 - 13460] Location in patent:supporting information

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