63980-44-9Relevant articles and documents
Amine ethylated piperazine and preparation method thereof
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Paragraph 0049-0052; 0054-0057; 0059-0062, (2021/10/16)
The invention provides a preparation method of an amine ethylated piperazine, and relates to the technical field of preparation of aminoethyl piperazine. The method comprises the following steps: mixing a piperazine compound, a chlorination reagent and a soluble piperazine compound solvent to carry out chlorination reaction to obtain the chloropiperazine hydrochloride. The piperazine compound comprises 2 - hydroxyethyl piperazine or N, N' - bis (2 - hydroxyethyl) piperazine. The chloropiperazine hydrochloride, the organic amine and the water are mixed, and the substitution reaction is carried out to obtain the aminated piperazine. The organic amine includes methylamine. Diethylamine, propylamine. The preparation method provided by the invention is high in product yield, high in purity, simple to operate, wide in reaction raw material source, low in production cost and suitable for industrial production.
STABILITY OF THE 1,4-BIS(2'-HALOETHYL)-1,4-DIAZABICYCLOYHEPTANE DICATION
Pettit, George R.,Gieschen, Donald P.,Pettit, William E.,Rawson, Thomas E.
, p. 217 - 221 (2007/10/02)
Certain derivatives of the 1,4-bis(2'-haloethyl-1,4-diazabicycloheptane dication system ranging from dibromide 2b to ethanesulfonate 2g were found to be quite stable under essentially neutral conditions.A very convenient synthesis of 1,4-bis(2'-chl