反应详情

温度

100 °C

To a mixture of 1-[3-{4-(diphenylmethyl)piperazin-1-yl}propyl]-2,4-(1H,3H)-quinazolinedione (3.1 g) and phosphorus pentasulfide (6.1 g) was added pyridine (70 ml) and the mixture was stirred for 18 hours at 100° C. The reaction mixture was cooled and then concentrated in vacuo. To the residue was added water and the mixture was stirred and then resultant precipitates were collected by filtration and washed with water. To the precipitates was added chloroform and the mixture was stirred enough and then insoluble materials were filtered off. These insoluble materials were washed twice with chloroform and then whole chloroform layers were combined, washed with water and with saturated sodium chloride aqueous solution respectively, dried over anhydrous sodium sulfate and evaporated in vacuo. The residue was purified by a column chromatography on silica gel (90 g) using 2% methanol in chloroform for elution to give 1-[3-{4-(diphenylmethyl)piperazin1-yl}propyl]-4-thioxo-3,4-dihydro-2(1H)-quinazolinone (1.2 g) as an amorphous material.

1. temperatureThe reaction mixture was cooled
2. concentrationconcentrated in vacuo
3. additionTo the residue was added water
4. stirringthe mixture was stirred
5. customresultant precipitates
6. filtrationwere collected by filtration
7. washwashed with water
8. additionTo the precipitates was added chloroform
9. stirringthe mixture was stirred enough
10. filtrationinsoluble materials were filtered off
11. washThese insoluble materials were washed twice with chloroform
12. washwashed with water and with saturated sodium chloride aqueous solution respectively
13. dry with materialdried over anhydrous sodium sulfate
14. customevaporated in vacuo
15. customThe residue was purified by a column chromatography on silica gel (90 g)
16. washfor elution