Synthesis of Triethylenetetramines

摘要

Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

主权项

1. A compound of formula (I), wherein R1 and R2 of formula (I) are the same or different and are hydrogen, an alkyl group, an aryl group, or an aromatic alkyl group; a compound of formula (II), wherein each R of formula (II) is independently methyl carbamate, ethyl carbamate, benzyl carbamate, tert-butyl carbamate, tert-butyloxycarbonyl (Boc), cyclohexanone, 2,2,6,6-tetramethyl cyclohexanone, anthrone, an alkyl group, an aryl group, or an aromatic alkyl group, a compound of formula (IV), wherein R1 and R2 of formula (IV) are the same or different, and are hydrogen, an alkyl group, an aryl group, or an aromatic alkyl group, or a compound of formula (VI), wherein each R of formula (VI) is independently methyl carbamate, ethyl carbamate, benzyl carbamate, tert-butyl carbamate, tert-butyloxycarbonyl (Boc), cyclohexanone, 2,2,6,6-tetramethyl cyclohexanone, anthrone, an alkyl group, an aryl group, or an aromatic alkyl group.