Acetylation of sterically hindered diamines

A process for acetylating diamines having a sterically hindered amino function and a further, sterically unhindered amino function where the acetylation takes place at the sterically unhindered amino function is provided comprises reacting the diamine with ketene. A preferred diamine is 4-amino-2,2,...

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Hauptverfasser: JULIUS, MANFRED
Format: Patent
Sprache:eng
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Zusammenfassung:A process for acetylating diamines having a sterically hindered amino function and a further, sterically unhindered amino function where the acetylation takes place at the sterically unhindered amino function is provided comprises reacting the diamine with ketene. A preferred diamine is 4-amino-2,2,6,6-tetramethylpiperidine (TAD).