반응 #43669

반응 방정식

HOBt

H2O

pyruvic acid

EDC.HCl

HCl

H-Phe-NH2

Et3N

→

title compound

수율 65.1%

N-2-oxo-propanoyl-L-phenylalanine amide

수율 65.1%

용매

DCM

반응 조건

후처리

1. 1
   기타After removal of the solvent in vacuo
2. 2
   workup.DISSOLUTIONthe residue was dissolved in AcOEt
3. 3
   세척successively washed with 10% citric acid, 5% NaHCO3 and saturated NaCl for three times
4. 4
   건조dried over Na2SO4
5. 5
   농축concentrated in vacuo

실험 절차

A suspension of HCl.H-Phe-NH2 (1.0 g, 4.98 mmol) in DCM (49 mL) was neutralized with Et3N (0.69 mL, 4.98 mmol) at 4° C. To this mixture were added HOBt.H2O (0.76 g, 4.98 mmol), pyruvic acid (0.52 mL, 7.47 mmol), and EDC.HCl (1.05 g, 5.47 mmol), and the mixture was stirred at 4° C. for 30 min and at room temperature for 2 h. After removal of the solvent in vacuo, the residue was dissolved in AcOEt, successively washed with 10% citric acid, 5% NaHCO3 and saturated NaCl for three times, dried over Na2SO4, and concentrated in vacuo to obtain 0.76 g (65%) of the title compound as a white solid: mp 138-140° C.; 1H NMR (300 MHz, DMSO-d6) δ 8.34 (d, J=8.6 Hz, 1H), 7.52 (s, 1H), 7.24-7.19 (m, 6H), 4.45-4.37 (m, 1H), 3.11 (dd, J=4.2, 13.8 Hz, 1H), 2.96 (dd, J=9.5, 13.8 Hz, 1H), 2.26 (s, 3H); HRMS (EI): m/z 234.1008 (M+) (calcd for C12H14N2O3: 234.1004).

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