bluuebunny/crossref_metadata_2025_split huggingface dataset:
Does a quasi-Thermal retro-Diels-Alder Decomposition Exist in Mass Spectrometry ? [1]
Authors: Bukovits G. J. , Budzikiewicz H. 
Published: February 2015

Abstract
Evidence is produced to the effect that in mass spectrometry a quasi-thermal retro-Diels-Alder decomposition does not occur. This reaction has to be triggered by the positive charge in the molecule.
Reduktion von Butyl-und Phenylantimon(III)bromiden sowie von t-Butylantimon(III)chloriden mit Magnesium in Gegenwart von Trimethylchlorsilan: Konkurrenz von Sb-Sb-und Sb-Si-Verknüpfung / Reduction of Butyl-and Phenylantimony(III) Bromides and of t-Butylantimony(III) Chlorides with Magnesium in the Presence of Trimethylchlorosilane: Competition of Sb-Sb and Sb-Si Coupling
Authors: Breunig Hans Joachim , Severengiz Tevfik 
Published: February 2015

Butylantimony(III) bromides react with Mg in tetrahydrofuran (THF) even in presence of Me3SiCl exclusively with Sb-Sb-coupling: Starting from Bu2SbBr, Bu2SbSbBu2 is formed and BuSbBr2 is reduced to (BuSb)x. Sb-Si-coupling dominates in the reactions of Ph2SbBr or t-Bu2SbCl with Mg/Me3SiCl/THF yielding Ph2SbSiMe3 or t-Bu2SbSiMe3.
Both Sb-Sb- and Sb-Si-coupling reactions are observed, when PhSbBr2 reacts with Mg and Me3SiCl yielding PhSb(SiMe3)2 and (PhSb)x. The same reactants can also form the distibanes Ph2(SiMe3)2Sb2 and Ph(SiMe3)3Sb2. The reaction of t-BuSbCl2 with Mg/Me3SiCl yields the stibines t-BuSb(SiMe3)2 and Sb(SiMe3)3 together with (t-BuSb)4. In the reactions of t-BuSbCl2 or PhSbBr2 the ratio of Sb-Sb- and Sb-Si-coupling can be strongly influenced by using different reaction conditions.
Untersuchungen zur Charakterisierung des Prochamazulens Matrizin aus Matricaria chamomilla L. / Studies on the Characterization of the Chamazulene Precursor Matricine from Matricaria chamomilla L.
Authors: Flaskamp Elmar , Zimmermann Gottfried , Nonnenmacher Gerhard , Isaac Otto 
Published: February 2015

The relative configuration of the thermolabile chamazulene precursor matricine has been established by NMR spectrometric studies.
The NMR spectral data prove to be consistent with the well-known structure of the chamomile component. On the basis of our results the levorotatory natural substance moreover can be specified stereochemically as (−)-(3S*, 3aR*, 4S*, 9R*, 9aS*, 9bS*)-4-acetoxy-2,3,3a,4,5,9,9a,9b-octahydro-9-hydroxy-3,6,9-trimethylazuleno[4,5-b]furan-2-one.
Beiträge zur Strukturchemie phosphorhaltiger Ketten und Ringe, V [1] Die Molekül- und Kristallstruktur des 1.2.3.4-Tetra-tert-butyl-1.4-bis(trimethylsilyl)tetraphosphans, Me3Si-(t-BuP)4-SiMe3 / Structural Chemistry of Phosphorus-Containing Chains and Rings, V [1] Molecular and Crystal Structure of 1,2,3,4-Tetra-tert-butyl-1,4-bis(trimethylsilyl)tetraphosphane, (H3C)3Si-(t-BuP)4-Si(CH3)3
Authors: Tebbe Karl-Friedrich , Fröhlich Roland 
Published: February 2015

The compound 1,2,3,4-tetra-tert-butyl-1,4-bis(trimethylsilyl)tetraphosphane, Me3Si-(t-BuP)4-SiMe3, C22H54P4Si2, crystallizes monoclinically in the space group P21/n (No. 14) with a = 889.9 pm, b = 2292.8 pm, c = 1568.0 pm, β = 94.14° and Z = 4 formula units.
The molecule forms a twisted Si-P4-Si-chain with two kinds of P-P-bonds. The atoms neighbouring the silicium atoms take part in bonds of length d̄(P-P) = 218.8 pm, whereas the central bond d̄(P-P) = 221.4 pm is much longer. A special feature of the structure is a short contact d̄(P-P) = 345.6 pm. Therefore, the inner region of the molecule has the shape of a nearly planar trapezium of the four phosphorus atoms. The periphery of the molecule is as expected. The average bond lengths are d̄(P-Si) = 228.5 pm, d̄(P-C) - 190.2 pm, d̄(Si-C) = 186.6 pm, d̄(C-C) = 151.8 pm and d̄(C-H) = 94 pm
Untersuchungen an Polyhalogeniden, V [1] Darstellung und Kristallstruktur des Tetrammin-palladium(II)-oktaiodids, [Pd(NH3)4]I8 / Studies on the Polyhalides, V [1] Preparation and Crystal Structure of [Pd(NH3)4]l8
Authors: Tebbe Karl-Friedrich , Freckmann Bernhard 
Published: February 2015

The new compound [Pd(NH3)4]l8 crystallizes monoclinically in the space group P21/m with a = 959.0 pm, b = 835.4 pm, c = 1301.1 pm, β = 103.37° and Z = 2 formula units. The crystal structure has been solved by 'direct methods' and refined to R = 0.057 with 1357 observed reflections.
The structure consists of quadratically coordinated cations [Pd(NH3)4]2+ and planar, Z-shaped and completely ordered octaiodide anions I8
2-. According to the sequence of interatomic distances d(I-I) = 295.0 pm, 289.9 pm, 336.2 pm, 279.1 pm, 327.0 pm, 339.3 pm, 273.8 pm the anions may be described as [I3- • I2 • (I- • I2)]- The iodide-iodine sides (I- • I2) are joined with the distance d(I---I) = 364.1 pm to a slightly bent triiodide chain being part of an octaiodide ribbon 1
∞[I8
2-]- Next contact spacings between neighboring anions start at d(I---I) = 403.7 pm
Characterization of Alcohol Solvents by the Empirical Polarity Parameters AN, Z, and ET(30)
Authors: Elias Horst , Dreher Michael , Neitzel Sabine , Volz Harald 
Published: February 2015

Abstract
The acceptor number AN and the polarity parameters Z and ET(30) were determined for a series of alcohols applied as media in the study of kinetic solvent effects. The alcohols thus characterized are methanol, ethanol, 1-propanol, 1-butanol, 2-butanol, 2-methyl-2-butanol, 3-pentanol, 2-chloroethanol, 2-methoxyethanol, 2-phenylethanol, 2-cyanoethanol, benzyl alcohol, 3-ethyl-3-pentanol, 2,4-dimethyl-3-pentanol, and 3-ethyl-2,4-dimetliyl-3-pentanol. In addition, AN was determined for 1,2-dichloroethane and Z for the binary solvent mixtures methanol/2-methyl-2-butanol, ethanol/2,2,2-trifluoroethanol. and methanol/pyridine. The data obtained are correlated and the parameters AN, Z, and ET(30) are critically compared.
P(C6H5)4[VOBr4]: Synthese, IR-Spektrum und Kristallstruktur / P(C6H5)4[VOBr4]: Synthesis, IR Spectrum and Crystal Structure
Authors: Müller Ulrich , Shihada Abdel-Fatah , Dehnicke Kurt 
Published: February 2015

Abstract
PPh4[VOBr4] was prepared by the reaction of PPh4Br with VOBr3 in CH2Br2 solu-tion. The structure of the dark violet crystals was determined with X-ray diffraction. PPh4[VOBr4] crystallizes in the space group P4/n with the lattice constants a = 1275.9 and c = 784.5 pm with two formula units per unit cell. The structure type corresponds to the frequently encountered AsPh4[RuNCl4] type. The VOBr4
- ion forms a square pyramid; the V = O bond has a length of 155 pm. In the IR spectrum, the V -O stretching vibration appears at 922 cm-1 .
Oxamide Oxime Complexes: The Structure of the Complex Bis ( oxamide - oximato )nickel( II) - Hydrogen Chloride - Water, and the Characterization of the Analogous Platinum(II) Complex
Authors: Entires Helmut 
Published: February 2015

Abstract
[Ni(C2H5N4O2)2] · HCl · H2O, C4H10N8NiO4 · HCl · H2O, forms triclinic crystals, Mr = 347.36, P1̄, a = 7.219(2), b = 7.316(1), c = 11.797(3) Å, α = 73.89(2), β = 86.37(2), γ = 85.71(2)°, V = 596 Å3 , Z = 2, dc = 1.93 Mgm-3 ; final Rw = 0.028 for 1957 reflections. The planar complex molecules form equidistant stacks along b, with the molecular planes inclined at ~29° to the stacking axis. Molecules of adjacent stacks are linked along a by an intermolecular H bridge coexistins with the usual intramolecular H bridges. The analogous Pt complex, C4H10N8O4Pt · HCl · H2O, Mr = 483.74, a = 6.480(4), b = 16.115(5), c = 12.194(9) Å, β = 101.27(4)°, V = 1249 Å3 , Z = 4, dc = 2.57 Mgm-3 , P21/a, crystallizes in a columnar structure with a Pt-Pt separation of ~a/2 ≈ 3.24 Å. Due to twinning, faking orthorhombic symmetry, a complete structure determination was not possible.
Bi2, das Bismuth-Homologe des Distickstoffs als Komplexligand in Bi2[W(CO)5]3 / Bi2, the Bismuth Homologue of Dinitrogen as a Ligand in Bi2[W(CO)5]3
Authors: Huttner Gottfried , Weber Ute , Zsolnai Laszlo 
Published: February 2015

Abstract
Reductive dehalogenation of BiCl3 with Na2W2(CO)10 leads to Bi2[W(CO)5]3 (1), which contains an axial Bi2 ligand side-on coordinated to three W(CO)5 groups. The star-type arrangement of three metal carbonyl moieties around a Bi2 axis with a very short Bi-Bi bond distance (281.8(3) pm) and a Bi2W3 core of approximate D3h symmetry is proved by an X-ray analysis (R1 = 0.041). 1 is thus the highest homologue of a series of complexes X2[W(CO)5]3 (X = As, Sb, Bi) and is the first stable molecular compound to contain a Bi2 ligand.
He(I) and He(II) Photoelectron Spectra of M[Co(CO)4]2 and M[Mn(CO)5]2 Complexes (M = Zn, Cd, and Hg)
Authors: Louwen Jaap N. , Andréa Ronald R. , Stufkens Derk J. , Oskam Ad 
Published: February 2015

Abstract
The He(I) and He(II) photoelectron spectra of M[Co(CO)4]2 and M[Mn(CO)5]2 complexes (M = Zn, Cd, Hg) are reported. Bands attributable to metal-metal bonds, metal d-levels and CO orbitals are assigned in agreement with a semi-ionic model, i.e. M2+ and [M'(CO)n]-. Relativistic effects prove to be important in assigning these ultraviolet photoelectron spectra.
ESR Studies on the Nitrosyl Complex of Hagfish (Myxine glutinosa L.) Hemoglobin
Authors: John Maliyakal E. , Lalthantluanga Ralte , Liljeqvist Gisela , Paléusa Sven , Braunitzer Gerhard 
Published: February 2015

Abstract
The nitric oxide complex of hagfish hemoglobin exhibits electron spin resonance spectra centered around g = 2 with rhombic symmetry. The six coordinated spectrum is not influenced by protonation or presence of inositol hexaphosphate. Thus, the critical substitutions at E 7 (His → Gln) and E 11 (Yal → Ile) do not disrupt the proximal histidineiron bonds in the nitrosyl complex of this primitive hemoglobin, though the same type of substitution are known to cause destabilization of R quaternary structure in tetrameric mammalian nitrosylhemoglobins. This difference could be related to the difference in tension existing in the respective hemes of tetrameric and monomeric hemoglobins.
Imine-Enamine Tautomerism -Nucleophilic Reactions of Imines
Authors: Rahman Atta-ur , Ahmad Viqar Uddin , Sultana Mumtaz , Perveen Nusrat , Sultana Nighat 
Published: February 2015

Abstract
A reinvestigation of the reactivity of N-isopropylidene cyclohexylamine to methyl acrylate by GC-MS analysis has shown that the major product is the β-aminoester (9) formed by the N-alkylation of cyclohexylamine which may be generated by a dimerisation-elimination sequence. A number of other products resulting from N-and C-alkylation of the ketimine have been identified.
Total Synthesis of PHI
Authors: Moroder L. , Göhring W. , Thamm P. , Wünsch E. , Tatemoto K. , Mutt V. , Bataille D. 
Published: February 2015

Abstract
PHI has recently been isolated from porcine duodenum as a new peptide factor with VIP-like activities. Its primary structure corresponds to a linear heptacosapeptide amide characterized by a remarkable sequence homology to the other known members of the glucagon family. The synthesis of this hormone candidate has been performed applying the strategy of overall acid-labile side-chain protection and the fragment condensation procedure. Upon assembly of the fragments to the fully protected heptacosapeptide amide, acidolytic deprotection with trifluoroacetic acid followed by purification of the resulting crude product via ion exchange chromatography and partition chromatography yielded synthetic PHI at a high degree of purity as judged from different analytical tests. Comparative analyses of the synthetic and natural product by means of chromatographic and biological assays confirmed the identity of the two PHI preparations.
Inversion der Calcium-Isotopenseparation an einem Ionenaustauscher durch Ver- änderung der LiCl-Elektrolytkonzentration / Inversion of the Calcium Isotope Separation at an Ion Exchanger Resin by Variation of the LiCl Electrolyte Concentration
Authors: Heumann Klaus G. , Klöppel H. , Sigl G. 
Published: February 2015

Abstract
The calcium isotope separation at a strongly acidic exchanger resin as a function of the concentration of a LiCl solution is investigated in column experiments. Whereas an enrichment of the heavier calcium isotopes in the solution phase is found with a 3 M LiCl solution, an inverse effect is obtained with 8 M and 12 M LiCl solutions. The separation effect e for the 12 M solution is found to be the highest calcium enrichment in a system without a complexing agent. The results are compared with those for other electrolyte solutions and can be explained by the anion/cation interactions.
13C NMR of the Tetrakis(phenylethynyl)borate Anion and of Some Phenylethynyl Boranes
Authors: Wrackmeyer Bernd 
Published: February 2015

Abstract
The 13C NMR parameters of the title compounds are assigned by heteronuclear triple resonance experiments 13C{1H,11B}. The magnitude of the coupling constants J(13C11B) corresponds roughly with J(13C13C). The chemical shifts δ13C reveal B-C(pp) π bonding which is, however, rather weak when compared with C+-C(pp) π bonding in phenylethynyl carbocations.
ESR Study on Complexes Formed on Reaction of cis-Dichlorodiammineplatinum(II) with Cytosine and Cytidine
Authors: Neubacher H. , Krieger J. , Zaplatynski P. , Lohmann W. 
Published: February 2015

Abstract
The ESR spectra of novel paramagnetic comple-xes between cis-dichlorodiammineplatinum(II) and cytosine or cytidine in aqueous solution are presented and discussed. The results imply a complex containing a binuclear metal-metal bonded platinum moiety with an unpaired electron spin delocalized over the dz2-orbitals.
Beiträge zur Chemie des Phosphors, 116 Kernresonanzspektren und Kristallstruktur von Tri-tert-butylcyclotriphosphan / Contributions to the Chemistry of Phosphorus, 116 NMR Spectra and Crystal Structure of Tri-tert-butylcyclotriphosphane
Authors: Hahn Josef , Baudler Marianne , Krüger Carl , Tsay Yi-Hung 
Published: February 2015

A complete analysis of the 31P, 13C and 1H NMR spectra of tri-tert-butyl-cyclotriphosphane (1) was carried out and the resulting NMR parameters were correlated with the X-ray data of the molecule. It was found, that increasing P-P-C-bond angles correspond to a downfield shift and an increase of the absolute values of the negative 1J(PP) and 1J(PC) coupling constants. Generally, the chemical shifts of cyclotriphosphanes as well as of larger cyclic phosphanes depend on the endo- and exocyclic bond angles, the dihedral angle between the electron lone pairs of adjacent P-atoms, and the β-effect. On the basis of the X-ray and chemical shift data of 1, the bond angles of other cyclotriphosphanes can be deduced from their δ(31P) values.
1 crystallizes triclinically in the space group P1̄ with Z = 4 formula units. The X-ray analysis confirms the NMR-spectroscopically determined three-membered ring structure with the tert-butyl substituents on either side of the ring plane. Due to steric hindrance between the two tert-butyl groups in cis position, the corresponding P-P-C-bond angles show the largest values so far observed for organylcyclophosphanes.
Some New Conducting Solids: Cation-Deficient Metal Dimercaptodithiolenes and Selenium Analogs
Authors: Papavassiliou G. C. 
Published: February 2015

Abstract
Some new conducting solids of the general formula ZxM(C3S5)2 and its selenium analogs (where: Z = Bu4N, Na, Li, NH4; M = Ni, Pd, Pt etc.; 0 < x ≤ 1) were prepared and studied.
S4N4 und seine Derivate: Darstellung, Struktur und Thermolyse von CuBr · S4N4 / S4N4 and its Derivatives: Preparation, Structure and Thermolysis of CuBr · S4N4
Authors: Thewalt Ulf , Müller Bernhard 
Published: February 2015

Abstract
The crystalline black polymeric CuI complex CuBr · S4N4 can be prepared in high yield from Cu(NO3)2 · 3 H2O, NH4Br and S4N4 in methanol. An X-ray structure analysis shows that it is isostructural with CuCl · S4N4. The crystals contain [CuBr]∞ chains and the Cu atoms of adjacent chains are bridged by S4N4 groups. The Cu atoms have an almost tetrahedral coordination. The 1,3-N,N′-bonded S4N4 group has the same conformation and, within narrow limits, the same dimensions as free S4N4. Thermolysis of CuBr · S4N4 at 180 °C yields among other products CuBr, S4N4, and S2N2.
Röntgenograpliische und magnetische Untersuchungen an perowskitverwandten Cyanoverbindungen CsMIIMIII(CN)6 / X-Ray and Magnetic Studies of Perovskite-Related Cyano Compounds CsMIIMIII (CN)6
Authors: Griebler W.-D. , Babel D. 
Published: February 2015

Abstract
The perovskite-related cyano compounds CsMIICr(CN)6 (MII = Mn, Zn), CsZnFe(CN)6 and CsMnCo(CN)6 (Mn = Mn-Cu) are characterized by their IR active C - N and MIII-CN stretching frequencies, their lattice constants and their magnetic susceptibilities (4,2-295 K). Except for CsCuCo(CN)6, which is tetragonally distorted, all compounds crystallize cubically face-centered (with lattice constants in the range from 1020 to 1084 pm). The magnetic behaviour indicates low spin MIII and high spin MII states, supporting the IR evidence for a strictly ordered MIII-CN-MII arrangement. The compound CsMnCr(CN)6 is ferrimagnetic, with a Néel temperature of TN = 90 K and an extrapolated spontaneous magnetization of a = 2,30 μB at 0 K. Superexchange interactions via the cyano bridges are considered responsible for the ferrimagnetism observed.
Meso-rac-Ph(X)P-(CH2)4-P(X)Ph-Liganden in Komplexen des Typs (CO)4M cis(L-L), Untersuchung der Stereoisomerie durch 31 P{ 1 H}-und 13C{1 H}-NMR-Spektroskopie / Meso, rac-Ph(X)P-(CH2)4-P(X)Ph Ligands in Complexes of the Type (CO)4M cis(L-L), Investigation of Stereoisomerism by 31P{1 H} and 13 C{ 1 H} NMR Spectroscopy
Authors: Diemert Klaus , Kuchen Wilhelm , Kutter Jürgen 
Published: February 2015

Abstract
By reaction of M(CO)6 (M = Cr, Mo, W) with the bifunctional aminophosphane Ph(NEt2)P-(CH2)4-P(NEt2)Ph (L-L) octahedral complexes (CO)4M cis(L-L) are obtained. While it is shown by 31P{1H} NMR spectroscopy, that these complexes contain meso-and rac-(L-L) to a different extent, there is evidence from 13C{1H} NMR data obtained for the Mo complex, that the rac-ligand always prevails. As racemisation is observed when the Mo complex reacts with HBr to give (CO)4Mo-cis[Ph(Br)P-(CH2)4-P(Br)Ph] an SN
1-mechanism is suggested for this reaction.
Synthesis and Structure of 1,2-Bis(2,4,6-tri-fert-butylphenyl)ethane
Authors: Winter Werner , Butters Thomas , Rieker Anton , Butsugan Yasuo 
Published: February 2015

Abstract
The title compound 9, C38H62, was prepared by dehalogenation of 2,4,6-tri-tert-butyl-benzyl chloride (7a). It crystallizes in the monoclinic space group C2/c with Z = 4. a = 10.923(7), b = 17.910(3), c = 17.395(3) Å and β = 91.87(3)° (the cell constants refer to 173 K). The structure was solved by direct methods and refined by full-matrix least squares to R = 0.073 for all 3853 reflexions (|F0| > 0). On account of steric repulsions, the central ethane bond, which lies on a twofold crystallographic axis, is stretched to 1.567(4) Å. Close packing of the molecules in layers parallel the ac-plane leads to boat-deformations of the benzene rings. Room-temperature data sets of weakly diffracting crystals [a = 10.948(6), b= 17.97(1), c= 17.52(2) and β = 91.9(1)°] do not give rise to an artificial shortening of the central ethane bond of 9. Evidently, poor data quality or lack of resolution have not to be considered as an explanation for the unusual short ethane bond [1.47(3) Å] in the first undamped hexaphenylethane [Stein, Winter, and Rieker (1978)].
Synthesis of N-Trityl-L-homoserine
Authors: Barlos Kleomenis , Theodoropoulos Dimitrios 
Published: February 2015

Abstract
L-Homoserine was tritylated via its silylated product with Me2SiCl2 or Ph2SiCl2 in 65-68% yield. Also N-Trt-L-methionine upon treatment with Mel and degradation of the resulting sulfonium salt with KOH yielded N-Trt-L-homoserine in 75% yield. Both routes provided N-Trityl-L-homoserine with identical physical data. In contrast to N-alkyloxycarbonyl-L-homoserine derivatives, N-Trt-L-homoserine shows no tendency to spontaneous lactonization.
0-(Triphenylstannyl)-N-acyl-N-arylhydroxylamines
Authors: Das Mrinal K. , Nath Matilal 
Published: February 2015

Abstract
A number of O-(triphenylstannyl)-N-acyl-N-arylhydroxylamines have been synthesized. Results of IR, electronic (UV) and 1H NMR spectroscopic measurements suggest that these compounds possess trigonal bipyramidal configuration around a pentacoordinated tin atom with phenyl groups cis to each other.
Keto-Steroids, I Conversion of Diosgenin to 6 β-Methylpregn-4-ene-6 α,20-diol-3,16-dione
Authors: Dawidar A. M. , Saleh A. A. , Abdel-Galil F. M. , Abdel-Malek M. M. 
Published: February 2015

Abstract
The reaction of diosgenin (1) with hydrogen peroxide/formic acid was investigated. As a result of this work, 5 α (25 R)-spirostane-3 β,5,6 β-triol (2) was prepared in 79% yield and 5 α-pregnane-3 β,5,6 β,16 β,20 α-pentol (3) in 80% yield. The pentol (3) was oxidised to 5 α-pregnane-3 β,5,10 β,20 α-tetrol-6-one (5) without forming its 16 β,20 α-isopropylidenedioxy derivative (4). Reaction of product 5 with CH3Mgl to give 6-methylpregnane derivative was unsuccessful. Therefore, product 7 was oxidatively degraded by H2O2/HCOOH to the 10-keto pregnane derivative (13) and its structure was proved through its transformation to 6 β-methylpregn-4-ene-6 α,20 α-diol-3,16-dione (15).
Synthese von 1.2.4-Oxadiazolyl-und 1.2.4-Thiadiazolylvinylphosphaten und deren biologische Wirkung / Synthesis of 1,2,4-Oxadiazolyl-and 1,2,4-Thiadiazolylvinylphosphates and their Biological Activity
Authors: Kübel Börries , Knauf Werner , Waltersdorfer Anna 
Published: February 2015

Abstract
2-(1,2,4-Oxadiazol-5-yl)vinylphosphates and 2-(1,2,4-thiadiazol-5-yl) vinylphosphates are prepared from the corresponding chlorophosphates and 5-acetonyl-1,2,4-oxadiazoles and 5-acetonyl-1,2,4-thiadiazoles resp. Some of the oxazolylvinylphosphates are effective insecticides and acaricides, but the corresponding thiadiazole derivatives have almost no effect.
Triazolyloximinoderivate, ihre Synthese und biologische Wirkung / Triazolyloximino Derivatives, their Preparation and Biological Activity
Authors: Kocur Jean , Mildenberger Hilmar , Sachse Burkhard 
Published: February 2015

Abstract
Triazolyloximinoethers are fungicides with high activity. Methods for the synthesis of these compounds and their stereochemistry are reviewed.
Neue Benzylester von Cyclopropancarbon- und Phenylessigsäuren als potentielle Insektizide / New Benzylic Esters of Cyclopropanecarboxylic and Phenylacetic Acids as Potential Insecticides
Authors: Welter Wolfgang , Hüttelmaier Thomas , Matterstock Karl , Mildenberger Hilmar 
Published: February 2015

Abstract
Pyrethroids are known insecticides with a great potency to a wide range of insect species. Derivatizations at the benzylic position and at the second aromatic ring system of these pyrethroids yielded new benzylic esters with insecticidal activity. Methods for the synthesis of these compounds are reviewed.
The Defensive Secretion of Aspavia brunna (Schout) (Hetetoptera: Pentatomidae)
Authors: Akpata M. I. , Olagbemiro T. . 
Published: February 2015

Abstract
The pungent odours emitted by true bugs when disturbed have captured the attention of numerous students of the Heteroptera. Studies of the chemical composition of the secretion of these stink bugs have shown the presence of alkanes, alkenyl acetates, alcohols and unsaturated aldehydes [1-3]. Most of these chemicals are employed as chemical warfare against the onslaught of microbial, vertebrate and in-vertebrate attackers [4], We herein report the chemical investigation of a previously unstudied secretion of a pentatomid bug, Aspavia brunna. The combined gas chromatography -mass spectrometry provides an excellent method for the study of the secretions of insects. We have utilized this technique and our results are summarized below.