Synthesis of [14C] piperazine and features of its distribution in animals

Savin, Yu. I.; Singin, A. S.; Korolev, G. K.

doi:10.1007/bf00779112

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2012

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“…Although the first report on 4 is dated to 1879 13 and an improved synthesis of its hydrochloride has existed since 1918 14 only few references about BNPP are available. Most deal with organic molecules like piperazine, 14 its derivatives 15 or 14 C-labelled related compounds [16][17][18][19] where the hydrochloride of 4 appears as an intermediate in their synthesis. Some applications in polymer chemistry [20][21][22][23] or as a fungicide 24 are also known.…”

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confidence: 99%

1,4-Bis(4-nitrosophenyl)piperazine: novel bridging ligand in dinuclear complexes of rhodium(iii) and iridium(iii)

2012

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The synthesis, spectroscopic characterization and crystal structures of the first 1,4-bis(4-nitrosophenyl)-piperazine (BNPP) (4) bridged dinuclear complexes of rhodium(III) and iridium(III) are presented. All new compounds were characterized by their NMR, IR and mass spectra. The X-ray structure analyses of the obtained half-sandwich complexes revealed a slightly distorted pseudo-octahedral configuration ("three-legged pianostool") for the metal(III) centers. The bridging BNPP ligand is s-N coordinated by both nitroso groups and shows different conformations of the piperazine ring depending on the solvent used for crystallization. Moreover the crystal structures of 1,4-bis(4-nitrosophenyl)piperazine (4) and its precursor 1,4-diphenylpiperazine (3) are reported.

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