1,5-diaminoheptanol-6, a process for its preparation and its...

Details 1,5-diaminoheptanol-6, a process for its preparation and its... 1,5-diaminoheptanol-6, a process for its preparation and its...

C - Chemistry, Metallurgy

07

C

402/140, 260/607

C07C 215/18 (2006.01) C08G 18/10 (2006.01) C08G 18/40 (2006.01)

Patent

CA 1319705

Mo-3061 LeA 25,338 1,5-DIAMINOHEPTANOL-6 A PROCESS FOR ITS PREPARATION AND ITS USE ABSTRACT OF THE DISCLOSURE The present invention is directed to a new chemical compound, 1,5-diaminoheptanol-6, which corresponds to the formula Image (I) The present invention is additionally directed to a process for the preparation of 1,5-diaminoheptanol-6 by reacting L-lysine in its free form and/or in the form of its HCl salt, with acetic acid anhydride in the presence of a tertiary organic amine base and with the addition of a 4-aminopyridine derivative, hydrogenating the resulting 1,5-bisacetaminoheptanone-6 to 1,5-bisacetaminoheptanol-6, forming a salt of 1,5-diaminoheptanol-6 by treating 1,5-bisacetaminoheptanone-6 with a mineral acid and isolating the free amine by treating the 1,5-diaminoheptanol-6 salt of a mineral acid with a strong base. Finally, the present invention is directed to the use of 1,5-diaminoheptanol-6 as at least a portion of the chain lengthening agent for the preparation of polyurethane plastics by the isocyanate polyaddition process.

574031

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