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Benzamide, 4-amino-3-ethoxy- synthesis

3synthesis methods
-

Yield:917909-47-8 100%

Reaction Conditions:

with ammonium formate;5% Pd(II)/C(eggshell) in methanol at 20; for 1 h;

Steps:



Preparation of 4-amino-3-ethoxy-benzamide; Palladium on carbon (5 %, 0.510 g) was added into a solution of 3-ethoxy-4-nitro- benzamide (1.694 g, 8.06 mmol) and ammonium formate (2.17 g, 34.4 mmol) in MeOH (25 ml_) at ambient temperature. The solution was stirred for 1 hour, filtered through CeI ite and washed with MeOH. The filtrate was concentrated in vacuo and triturated from diethyl ether to yield white solid (1.45 g, 100 %).1H NMR (400 MHz; d6-DMSO; 25 °C): 8.45 (s, 1 H), 7.62 (br s, 1 H), 7.30- 7.34 (m, 2H), 6.92 (br s, 1 H), 6.62 (d, 1 H), 5.24 (br s, 2H), 4.06 (q, 2H), 1.39 (t, 3H).

References:

WO2010/23181,2010,A1 Location in patent:Page/Page column 50-51