p-Toluenesulfonic acid → HCID 86658141, compound

Participants

Reaction Steps

Heat a mixture of 1-(5-amino-6-chloro-2-methylpyrimidin-4-ylamino)-2-methylpropan-2-ol (0.5 g, 0.002 mol), 2-chlorobenzaldehyde (0.6 g, 0.004 mol), p-toluene sulfonic acid (0.1 g) and molecular sieves (1.0 g) in toluene (25 mL) to 130° C. for 16 h. Remove the molecular sieves by filtration through diatomaceous earth, and concentrate the filtrate under reduced pressure to give a residue. Dissolve the residue in dry dichloromethane (5 mL) and add DDQ (0.47 g, 0.002 mol) at 0° C. Stir the reaction mixture at room temperature for 2 h. Dilute the reaction mixture with dichloromethane, wash with 1 N sodium hydroxide solution, water, and brine. Dry the organic layer over anhydrous sodium sulfate, filter, and concentrate to give a residue. Purify the residue on a silica gel column eluting with methanol:dichloromethane (2:98) to give the title compound (0.4 g). ES/MS m/z 351 (M+1).

Provenance & Evidence