[NH2:1][C:2]1([C:5]2[CH:13]=[CH:12][C:8]([C:9]([OH:11])=[O:10])=[CH:7][CH:6]=2)[CH2:4][CH2:3]1.CO.[CH3:16][Si](C=[N+]=[N-])(C)C.CCCCCC>C1COCC1>[NH2:1][C:2]1([C:5]2[CH:13]=[CH:12][C:8]([C:9]([O:11][CH3:16])=[O:10])=[CH:7][CH:6]=2)[CH2:4][CH2:3]1
4-(1-aminocyclopropyl)benzoic acid (1.75 g, 0.00988 mol) was stirred in THF (20 mL) and Methanol (10 mL) over ice/water bath. 2.00 M of trimethylsilyldiazomethane in hexane (9.9 mL, 0.020 mol) was added and the mixture was stirred at room temperature for 12 hours. The reaction mixture was concentrated down to viscous oil which solidified upon standing to give a crystalline solid. Crude material was dried on high vacuum line for 12 hours to give methyl 4-(1-aminocyclopropyl)benzoate (1.65 g, 87%) as pale brown solid.
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