| 摘要 |
Mo-3061 LeA 25,338 1,5-DIAMINOHEPTANOL-6 A PROCESS FOR ITS PREPARATION AND ITS USE The present invention is directed to a new chemical compound, 1,5-diaminoheptanol-6, which corresponds to the formula (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. |
