Process for Preparing Isohexide Diamines From Isohexide Diols
申请人:Richter Frank
公开号:US20240182488A1
公开(公告)日:2024-06-06
The invention relates to a process for preparing isohexide diamines from isohexide diols, including the following steps: a) reacting at least one isohexide diol to give at least one suitably substituted derivative, b) aminating the at least one suitably substituted derivative from step a) to give a reaction product mixture, c) fractionating the reaction product mixture from step b) to give a substantially bis-aminated isohexide-containing product, d) deprotecting the substantially bis-aminated isohexide-containing product purified in step c), to give an isohexide diamine, and e) purifying the isohexide diamine from step d) to give a purified isohexide diamine, with step c) being carried out before step d).