1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 178472468, compound

Participants

Reaction Steps

A solution of 2,4,5-trifluorophenyl isothiocyanate (70 mg, 0.37 mmol) in DMA (1 mL) was added in one portion to a stirred solution of ethyl trans-4-(4-{[hydrazino(oxo)acetyl]amino}-phenoxy)cyclohexanecarboxylate (Intermediate 80, 129 mg, 0.37 mmol) in DMA (3 mL) and the reaction mixture was stirred at room temperature for 1 h. EDCI (71 mg, 0.37 mmol) was added in one portion and the reaction mixture was heated to 85° C. for 20 minutes in a microwave. The mixture was cooled to room temperature and a further portion of EDCI (7.1 mg, 0.04 mmol) was added and the reaction mixture stirred at 85° C. for 10 minutes in a microwave. The reaction mixture was concentrated in vacuo to leave a solid, which was recrystallised (CH3CN) to give the title compound (125 mg, 69%) as a solid; 1H NMR δ1.33 (3H, t), 1.48-1.58 (2H, m), 1.68-1.72 (2H, m), 2.06-2.10 (2H, m), 2.18-2.22 (2H, m), 2.45-2.53 (1H, m), 4.21 (2H, q), 4.39-4.46 (1H, m), 7.07-7.11 (2H, d), 7.81-7.84 (2H, d), 7.80-7.91 (1H, m), 8.29-8.36 (1H, m), 11.12-11.25 (1H, m); MS m/e MH+ 505.

Provenance & Evidence