The title compound, C(12)H(15)ClN(2)O, is a piperazine derivative with the potential for use as a starting material for pharmaceutial and agrochemical applications. The structure is stabilized by C-H⋯O hydrogen bonds, C-H⋯π inter-actions and π-π stacking inter-actions [centroid-centroid distance = is 4.760 (2) Å].

Here we describe the use of a new open-source software package and a Raspberry Pi(®) computer for the simultaneous control of multiple flow chemistry devices and its application to a machine-assisted, multi-step flow preparation of pyrazine-2-carboxamide - a component of Rifater(®), used in the treatment of tuberculosis - and its reduced derivative piperazine-2-carboxamide.

Parkinson’s disease (PD) is a progressive neurodegenerative disorder mainly characterized by movement dysfunction. Earlier, it was found that (1R,2R,6S)-3-methyl-6-(prop-1-en-2-yl)cyclohex-3-ene-1,2-diol (Prottremin) demonstrated antiparkinsonian activity in vivo on different animal models of PD. The paper presents synthesis new Prottremin derivative, (1R,2R,6S)-2(4-(4-isopropylbenzyl)piperazin...

The asymmetric unit of the title dichloro-methane hemisolvate, C(24)H(33)N(5)S·0.5CH(2)Cl(2), comprises an adamantan-yl/triazole derivative and half a CH(2)Cl(2) mol-ecule of crystallization; the latter is disordered about a twofold axis of symmetry. The piperazine ring has a chair conformation and the two N-bound substituents occupy equatorial positions. The piperazine residue is almost normal...

In the title thienopyridine derivative, C(20)H(25)N(3)O(3)S(2), the piperazine ring exhibits a chair conformation and the tetra-hydro-pyridine ring exhibits a half-chair conformation. The folded conformation of the mol-ecule is defined by the N-C-C-N torsion angle of -70.20 (2) °. Inter-molecular C-H⋯S and C-H⋯O hydrogen bonds help to establish the packing.

The title compound (2,2'-(piperazine-1,4-diyl)bis(N'-((E)-5-chloro-2-hydroxybenzylidene) acetohydrazide) (5-ClPAH) was synthesized by reacting 1,4-Piperazinediacetic acid, 1,4-dihydrazide and 5 -Chloro-2-hydroxybenzaldehyde. Mass spectrometry, 1H, 13C-NMR, IR results of the were examined. Many information about physical chemical properties 5-ClPAH can be obtained theoretical calculations. Densi...

(S)-2-(4-Chlorobenzoyl)-1,2,3,4-tetrahydrobenzo[e]pyrazino[1,2-a][1,4]diazepine-6,12(11H, 12aH)-dione was obtained in a three-step, one-pot synthesis, starting from optically pure (S)-2-piperazine carboxylic acid dihydrochloride. Selective acylation of the β-nitrogen atom followed by condensation with isatoic anhydride and cyclization with HATU/DIPEA to a seven-member benzodiazepine ring, led t...

The title 1,3,4-oxa-diazole-2-thione derivative, C18H20N4OS2, crystallized with two independent mol-ecules (A and B) in the asymmetric unit. The 2-thienyl rings in both mol-ecules are rotationally disordered over two orientations by approximately 180° about the single C-C bond that connects it to the oxa-diazole thione ring; the ratios of site occupancies for the major and minor components were...