In the cation of the title salt {systematic name: 4-[bis-(4-fluoro-phen-yl)meth-yl]-1-[(2E)-3-phenyl-prop-2-en-1-yl]piperazin-1-ium pyridine-4-carboxyl-ate}, C26H27F2N2 (+)·C6H4NO2 (-), the piperazine ring is in a slightly distorted chair conformation. The dihedral angle between the mean planes of the fluoro-substituted benzene rings is 81.9 (1)° and these benzene rings form dihedral angles of ...

Three N-ar-yl-2,2,2-tri-bromo-acetamides, namely, 2,2,2-tri-bromo-N-(2-fluoro-phen-yl)-acetamide, C8H5Br3FNO, (I), 2,2,2-tri-bromo-N-[3-(tri-fluoro-methyl)-phen-yl]-acetamide, C9H5Br3F3NO, (II) and 2,2,2-tri-bromo-N-(4-fluoro-phen-yl)-acetamide, C8H5Br3FNO, (III) were synthesized and their crystal structures were analysed. In the crystal structure of (I), C-Br⋯πar-yl inter-actions connect the m...

THE TITLE COMPOUND [SYSTEMATIC NAME: (2S,5S,8R)-tert-butyl 8-(1,1,1,3,3,3-hexafluoropropan-2-yl)-12-hydroxy-5-isobutyl-2,6-dimethyl-4,7-dioxo-10-oxa-3,6,9-triazadodecanoate], C(21)H(36)F(6)N(3)O(6), is a tripeptide crystallizing in the chiral ortho-rhom-bic spacegroup P2(1)2(1)2(1). The absolute configuration (R) of the chiral center in the hexa-fluoro-valine unit is based on the known stereoch...

The title compound is a co-crystal of the cis and trans isomers, namely cis-bis-[1,1,1,5,5,5-hexa-fluoro-pentane-2,4-dionato(1-)-κ(2)O,O']bis-(4-phenyl-pyridine N-oxide-κO)copper(II)-trans-bis-[1,1,1,5,5,5-hexa-fluoro-pentane-2,4-dionato(1-)-κ(2)O,O']bis(4-phenyl-pyridine N-oxide-κO)copper(II) (2/1), [Cu(C(5)HF(6)O(2))(2)(C(11)H(9)NO)(2)]. In both isomers, the coordination geometry of the Cu(2+...

The metabolism of 5-fluorouracil (511) in tumors and livers of RII -1 tumor-bearing C3H mice given i.p. injections of 5FU was serially moni tored by "F magnetic resonance spectroscopy. The levels of 5FU and fluoronucleotide detected in the tumors after a dose of 130 mg/kg (n = 13) »ereless than one-third of those after 260-mg/kg 5FU (n = 14). During the days after these doses, tumor size decre...

Some oxime ether derivatives of α-ionone (4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one) have been synthesized. Reaction of 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-ketoxime with various chloro and fluoro aromatic and hetero aromatic compounds gave the corresponding oxime ether derivatives via aromatic nucleophilic substitution (SNAr). The structures of these co...

Treating 1,5-difluoro-2,4-dinitrobenzene (1) with N1-phenyl-5-(trifluoromethyl)benzene-1,2diamine (4) and N,N-diisopropylethylamine in EtOH at ca. 0 ◦C for 4 h affords a mixture of N1-(5-ethoxy-2,4-dinitrophenyl)-N2-phenyl-4-(trifluoromethyl)benzene-1,2-diamine (5) (38%) and N1-(5-fluoro-2,4-dinitrophenyl)-N2-phenyl-4-(trifluoromethyl)benzene-1,2-diamine (6) (51%) that can be separated by chrom...

The title compound, C(19)H(12)F(2)N(2)O(2), a 2:1 product of the reaction of 2-fluoro-benzoyl chloride and 2-amino-pyridine, crystallizes with a disordered 2-fluoro-benzene ring adopting two conformations [ratio of occupancies = 0.930 (4):0.070 (4)] in one of the two independent mol-ecules (differing slightly in conformation) comprising the asymmetric unit. In the crystal structure, C-H⋯O and C...