- HYDROBORATION OF 1,4-DIALLYLPIPERAZINE
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Hydroboration of 1,4-diallylpiperazine (I) with triethylamine-borane afforded 5,8-diaza-1,9-diboradispirotetradecane (II). 1,4-Diallylpiperazine dihydrochloride reacted with sodium borohydride to give 1,4-diallylpiperazine-diborane (V).Ethanolysis of II furnished 1,4-bis(3-diethoxyborylpropyl)piperazine (IV).The products of hydroboration of I were subjected to hydrolysis with hydrochloric acid and subsequent oxidation with alkaline hydrogen peroxide and the obtained mixtures were analyzed by gas-liquid chromatography and mass spectrometry.
- Kafka, Stanislav,Ferles, Miloslav
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p. 2275 - 2283
(2007/10/02)
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- 3-(4-Substituted piperazino)-1-xanthene-9-carbonyloxy-propanes
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The invention relates to novel piperazine derivatives having the formula (I), STR1 wherein R1 represents a C1-5 alkyl group having optionally a phenyl, trimethoxyphenyl, phenoxy, methoxy-cyclohexyl or heptamethyleneimino substituent
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