Reaction #10908

Reaction equation

{4-amino-2-[4-(4-isopropyl-piperazin-1-yl)-phenylamino]-thiazol-5-yl}-(3-methoxy-phenyl)-methanone

[4-Amino-2-[[4-[4-(1-methylethyl)-1-piperazinyl]phenyl]amino]-5-thiazolyl](3-methoxyphenyl)methanone

phosphoric acid

→

{4-Amino-2-[4-(4-isopropyl-piperazin-1-yl)-phenylamino]-thiazol-5-yl}-(3-methoxy-phenyl)-methanone; compound with phosphoric acid

Solvents

ethanol

ethanol

Conditions

Workup

1. 1
   TemperatureThis was cooled
2. 2
   Othercrystals were collected
3. 3
   Otherdried

Procedure

A solution of {4-amino-2-[4-(4-isopropyl-piperazin-1-yl)-phenylamino]-thiazol-5-yl}-(3-methoxy-phenyl)-methanone (of Example 43; 113 mg, 0.25 mmol) was dissolved in hot ethanol (10 ml) and to this was added 25 mg of phosphoric acid in ethanol (1 ml). This was cooled and crystals were collected and dried to furnish {4-Amino-2-[4-(4-isopropyl-piperazin-1-yl)-phenylamino]-thiazol-5-yl}-(3-methoxy-phenyl)-methanone; compound with phosphoric acid. MicroAnalysis C, H, N, P, and S.

Source