Acetylation of sterically hindered diamines

Details Acetylation of sterically hindered diamines Acetylation of sterically hindered diamines

1997-10-21

1999-03-09

Rotman, Alan L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548557, 540605, C07D21158, C07D20714

Patent

active

058802860

ABSTRACT:
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).

REFERENCES:
patent: 3904581 (1975-09-01), Murayama et al.
patent: 4326067 (1982-04-01), Fazio
C. Harries, Liebigs Ann. Chem., 417, 1918, pp. 118-125.
E.G. Rozantsev, Izv. Akad. Nank. SSSR, Ser. Khim 8, 1966, pp. 1422-1423.

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