反应详情

To a solution of 1-[3-(2-guanidinothiazol-4-yl)cyclohexylamino]-2-methoxycyclobutene-3,4-dione (0.19 g.) in 35 ml. of methanol/chloroform (50:50 v/v) was added 2-(p-chlorophenyl)ethylamine (0.18 g.) and the resulting mixture allowed to stand at room temperature for 5 hours. After heating under reflux for 2.5 hours the reaction mixture was cooled and the precipitated buff-coloured solid collected to give 1-[3-(2-guanidinothiazol-4-yl)cyclohexylamino]-2-[2-(p-chlorophenyl)ethylamino]cyclobutene-3,4-dione. The n.m.r. spectrum in d6 dimethylsulphoxide included resonances at 1.2 (m), 1.8 (m), 2.5 (t), 3.7 (m), 6.24 (s), 6.78 (br s).

1. temperatureAfter heating
2. temperatureunder reflux for 2.5 hours the reaction mixture
3. temperaturewas cooled
4. customthe precipitated buff-coloured solid collected