Dimethylformamide → HCID 136348444, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 4-(1-ethyl-3-(pyridin-2-yl)-4,6,7,8-tetrahydro-1H-pyrazolo[3,4-e][1,4]thiazepin-4-yl)-3-methylbenzoic acid (2.0 g, 5.07 mmol, Preparation #V.1) and thionyl chloride (1.8 mL, 25.3 mmol) in DCM (20 mL) was added DMF (0.04 mL, 0.51 mmol) and stirred at about 50° C. for about 2 h. The reaction was cooled to ambient temperature and the solvent was removed under reduced pressure to give 4-(1-ethyl-3-(pyridin-2-yl)-4,6,7,8-tetrahydro-1H-pyrazolo[3,4-e][1,4]thiazepin-4-yl)-3-methylbenzoyl chloride (2.1 g, 5.09 mmol, 100%) as a brown solid. LC-MS (Table 1, Method k) Rt=1.97 min, m/z 409 (M+H)+ for MeOH quench.

Provenance & Evidence