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A solution of 5-(3-amino-propyl)-thiophene-2-carboxylic acid methyl ester (0.118 g, 0.5 mmol) and diisopropylethylamine (0.071 g, 0.55 mmol) in 10 mL MeOH was stirred at room temperature for 30 minutes and 3-(3-chloro-phenyl)-propionaldehyde (0.093 g, 0.55 mmol) was added. The mixture was stirred for 90 minutes. The reaction was cooled to 0° C., NaBH4 (0.83 mL, 5.98 mmol) was added and the mixture was stirred for 30 minutes. The reaction was quenched with 1:1 NaHCO3:H2O and was washed with CH2Cl2. The CH2Cl2 extracts were washed with brine, dried over MgSO4, filtered, and concentrated in vacuo to afford the title compound as an oil (171 mg). MS 352 (M+1).

1. stirringthe mixture was stirred for 30 minutes
2. customThe reaction was quenched with 1:1 NaHCO3
3. washH2O and was washed with CH2Cl2
4. washThe CH2Cl2 extracts were washed with brine
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated in vacuo