反应详情

温度

90 °C

2-Amino-3-phenylpyridine (i.e. the product of Step A, 0.342 g, 2.01 mmol) was added to 2-chloro-1,3-thiazole-5-carbaldehyde (0.296 g, 2.01 mmol) in dichloromethane (10 mL) at room temperature. The suspension was stirred for 10 min and then concentrated to dryness under vacuum. The resulting residue was heated to 90° C. for 20 min on a rotory evaporator with a non-returning bump trap to facilitate water removal. The residual yellow solid was again dissolved in dichloromethane (10 mL) and heated to 90° C. on a rotory evaporator for an additional 20 min. At this time the yellow solid was checked by NMR to verify reaction completion. The title compound was obtained as a yellow solid and used in the next step without further purification.

1. concentrationconcentrated to dryness under vacuum
2. customwater removal
3. dissolutionThe residual yellow solid was again dissolved in dichloromethane (10 mL)
4. temperatureheated to 90° C. on a rotory evaporator for an additional 20 min
5. customreaction completion