Tetraethylenepentamine → Dihydroxypropyl carbamate

温度

-2 °C

The chloroformate of glycerol di(trichloroacetate), 42.3 g, is dissolved in 200 ml toluene. 300 Grams of a monosuccinimide dispersant composition (prepared by reacting 1 mole of polyisobutenyl succinic anhydride, where the polyisobutenyl group has a number average molecular weight of about 950, with 0.87 mole of tetraethylene pentaamine then diluting to about 50% actives in diluent oil) is dissolved in 200 ml toluene. Both solutions are cooled to below 0° C. (approximately -2° C.) using a salt ice-water bath. The solutions are poured together into a 2-liter flask equipped with a mechanical stirrer and a drying tube. The reaction solution is mixed with strong stirring and kept below 0° C. for 40 minutes and then is allowed to warm to room temperature. After stirring at room temperature for several hours, about 65 mls of the reaction mixture is added to 130 mls hexane and 65 mls 1N NaOH in a separatory funnel in order to remove the trichloroacetate group. The mixture is intermittently shaked for 30 minutes. After phase separation, the organic layer is washed several times with brine, is dried over anhydrous magnesium sulfate, is filtered and stripped to yield dihydroxypropyl carbamate derivatives of the monosuccinimide.

1. additionThe solutions are poured together into a 2-liter flask
2. customequipped with a mechanical stirrer and a drying tube
3. additionThe reaction solution is mixed
4. temperatureto warm to room temperature
5. stirringAfter stirring at room temperature for several hours
6. customto remove the trichloroacetate group
7. waitThe mixture is intermittently shaked for 30 minutes
8. customAfter phase separation
9. washthe organic layer is washed several times with brine
10. dry with materialis dried over anhydrous magnesium sulfate
11. filtrationis filtered

ORDレコード

ord-8e17d1df15bd481a9897096c8c49e220

出典データセット

uspto-grants-1990_05

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US04927551