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ChemicalBook CAS DataBase List Ethanone,1-(2-amino-5-chlorophenyl)-
1685-19-4

Ethanone,1-(2-amino-5-chlorophenyl)- synthesis

11synthesis methods
18640-60-3 Synthesis
1-(5-CHLORO-2-NITROPHENYL)-1-ETHANONE

18640-60-3
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Yield: 88%

Reaction Conditions:

with hydrogen;platinum(IV) oxide in ethanol at 20; under 760.051 Torr; for 4.5 h;

Steps:

1.b
b) A mixture of 1-(5-chloro-2-nitrophenyl)ethanone (4.40 g, 22.05 mmol), PtO2 (40 mg) and charcoal (400 mg) in EtOH (80 mL) was rapidly stirred at RT for 4.5 h under one atmosphere of hydrogen. The reaction mixture was filtered through a pad of celite (the residues washed with CH2Cl2) and concentrated under reduced pressure. The residue was filtered through a pad of silica (eluting with CH2Cl2/PE, 4:1) to afford a pale green oil which was recrystallized from Et2O/PE to give 1-(2-amino-5-chlorophenyl)ethanone (3.30 g, 88%), as pale green crystals.

References:

Winzenberg, Kevin Norman;Meyer, Adam Gerhard;Yang, Qi;Riches, Andrew Geoffrey US2007/238700, 2007, A1 Location in patent:Page/Page column 26

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