1,2-Dichloroethane → (S)-Methyl 2-((tert-butoxycarbonyl)amino)-3-(2-((5-formylthiazol-2-yl)amino)acetamido)propanoate

Participants

Reaction Steps

Following the general procedure as described in Example 24, except using 2-((5-formylthiazol-2-yl)amino)acetic acid, 1.00 HCl (150 mg, 0.674 mmol), (S)-methyl 3-amino-2-((tert-butoxycarbonyl)amino)propanoate (see U.S. Publication No. 2007/93414 A1, 164 mg, 0.751 mmol), -1-hydroxy-7-azabenzotriazole (45 mg, 0.331 mmol), CH2C2 (5 mL), N-methylmorpholine (128 μL, 1.164 mmol), EDC (128 mg, 0.667 mmol) and stirring at room temp for 1 h, 108 mg (41.5%) of the title compound is isolated as an orange/red solid. Purification is done by BIOTAGE® Silica gel chromatography on a 20 g Thompson Single Step silica cartridge using a linear gradient from 100% CH2Cl2 to 100% EtOAc over 10 column volumes. LC/MS (Condition A): ret. T=2.54 min, (M+Na) 409.

Provenance & Evidence