反应详情

A mixture of ethanolamine (2-aminoethanol) (98%, 1.750 kg, 28.0 moles) in isopropanol (7.0 l) was stirred to yield a homogeneous solution. Thereto triphenylchloromethane (97%, 2.020 kg, 7.03 moles) was added slowly within 1 h at room temperature with stirring, whereat the temperature was not to exceed 30° C. After completed dissolution of triphenylchloromethane (whereat ethanolamine hydrochloride separated as a white precipitate) the reaction mixture was stirred for another hour and cooled to room temperature. The precipitate, which separated, was filtered off and the filtrate was poured into ice-cold water (8.0 l). The precipitate, which separated, was filtered off and dried in vacuo at a temperature not exceeding 50° C. Thus there were obtained 2.120 kg (98%) of the desired compound.

1. customto yield a homogeneous solution
2. stirringwith stirring, whereat the temperature
3. customto exceed 30° C
4. customseparated as a white precipitate) the reaction mixture
5. stirringwas stirred for another hour
6. customThe precipitate, which separated
7. filtrationwas filtered off
8. additionthe filtrate was poured into ice-cold water (8.0 l)
9. customThe precipitate, which separated
10. filtrationwas filtered off
11. customdried in vacuo at a temperature not
12. customexceeding 50° C