1,4-Dimethylpiperazine → HCID 14614944, compound

Participants

Reaction Conditions

Reaction Steps

2,4-Dichloroquinazoline (2.00 g, 10.1 mmol, prepared as described in Prasad, M., et al. Org. Process Res. Dev. 2004, 8, 330-340) was slurried in 1,4-dioxane (20.0 mL). 1,4-Dimethylpiperazine (1.44 mL, 10.6 mmol) was added. The mixture was heated in a CEM microwave at about 150° C. for about 5 min. The material was poured into saturated aqueous NaHCO3/water (1:1, 150 mL). The mixture was extracted with EtOAc (5×100 mL). 20 g of silica gel was added to the combined organics and the volatiles were removed under reduced pressure. The resulting solid was purified by silica gel chromatography eluting with a gradient of 2-10% MeOH/DCM to afford 4-chloro-2-(4-methylpiperazin-1-yl)quinazoline (1.36 g, 52%): LC/MS (Table 1, Method n) Rt=0.51 min; MS m/z 263 (M+H)+.

Provenance & Evidence