3-(1-Amino-ethyl)-benzoic acid methyl ester synthesis
- Product Name:3-(1-Amino-ethyl)-benzoic acid methyl ester
- CAS Number:153994-69-5
- Molecular formula:C10H13NO2
- Molecular Weight:179.22
1027256-76-3
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Yield:153994-69-5 100%
Reaction Conditions:
Stage #1: methyl 3-{1-[(tert-butoxycarbonyl)amino]ethyl}benzoatewith trifluoroacetic acid in dichloromethane at 20; for 1.5 h;
Stage #2: with ammonia;water pH=11;
Steps:
13
A solution of methyl 3-{l-[(tert-butoxycarbonyl)amino]ethyl}benzoate (200 mg, 0.72 mmol) in 20% trifluoroacetic acid in dichloromethane (10 mL) was stirred at room temperature for 1.5 hours. After this time the mixture was concentrated under reduced pressure and the residue was dissolved in water and basified to pH 11 with aqueous ammonia. The mixture was extracted with ethyl acetate (2 x 15 mL) and the extracts were washed with brine (20 mL), dried (Na2SO4) and concentrated under reduced pressure to give methyl 3-(l-aminoethyl)benzoate (130 mg, 100%) as a pale yellow oil.
References:
WO2008/58341,2008,A1 Location in patent:Page/Page column 97
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153994-69-5
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