Benzenesulfonyl chloride → HCID 21905989, compound

Participants

Reaction Steps

To a solution of 1-acetyl-4-[(4-{[4-(4-aminophenyl)pyrimidin-2-yl}amino}phenyl)carbonyl}piperazine (100 mg, 0.24 mmol) in pyridine (5 mL) containing a catalytic amount of DMAP is added benzenesulfonyl chloride (50 mg, 0.29 mmol) and the solution is stirred overnight at room temperature. The pyridine is removed under vacuum and the residue extracted into methylene chloride and washed with 1N HCl. Evaporation of solvent provides the crude piperazine which is purified by preparative HPLC (10-60% CH3CN over 25 min.) to give an analytically pure sample as a yellow solid: M+1; 557.3. HPLC Retention Time; 9.59 min (Method B).

Provenance & Evidence