bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Allylations of ((Diethoxyphosphoryl)difluoromethyl)zinc Bromide as a Convenient Route to 1,1‐Difluoro‐3‐alkenephosphonates.
Authors: BURTON D. J. , SPRAGUE L. G. 
Published: May 2016

AbstractThe phosphoryldifluoromethylzinc bromide (III), obtained from the phosphonate (I) by treatment with zinc (II), reacts with the allyl halides (IV) in the presence of catalytic amounts of CuBr to form the alkenephosphonates (V).
ChemInform Abstract: Intramolecular Donor‐Acceptor Interactions in N,N′‐Dimethylurea Derivatives of Phosphorus.
Authors: KAUKORAT T. , SCHMUTZLER R. 
Published: May 2016

AbstractThe 2‐(2‐aminoethylamino)1,3‐diaza‐2λ3‐phosphetidinone (III) is synthesized according to the scheme.
ChemInform Abstract: Metal‐Containing Heterocycles: Preparation, Properties, Reactions. Part 63. Phosphamolybdacyclopropanes with Carbene and Phosphinidene Building Blocks.
Authors: LINDNER E. , STAENGLE M. + , HILLER W. , FAWZI R. 
Published: May 2016

AbstractThe phosphidomolybdate (I) reacts with the geminal dihalides (II) and the organophosphorus chlorides (IV) to give the three‐membered phosphamolybdacyclopropanes (III) and (V), respectively.
ChemInform Abstract: Cluster Synthesis. Part 25. Synthesis and Characterization of New Mixed‐Metal Cluster Complexes by Metal‐Metal Exchange. Reactions of the Sulfido Cluster Complexes M3(CO)9(μ3‐CO)(μ3‐S) (M: Fe, Ru, and Os) with W(CO)5L (L: CO or PMe2Ph).
Authors: ADAMS R. D. , BABIN J. E. , MATHUR P. , NATARAJAN K. , WANG J.‐G. 
Published: May 2016

AbstractThe reactions of the sulfur‐bridged clusters (I) with the tungsten compounds (II) yield the new mixed‐metal clusters (III) and in one case additionally the tetranuclear cluster (IVa).
ChemInform Abstract: Trifluoromethyl Group on Quarternary Carbon. Synthesis of 16,16,16‐Trifluororetinal.
Authors: HANZAWA Y. , SUZUKI M. , KOBAYASHI Y. 
Published: May 2016

Abstract2‐Trifluoromethylacrylic acid (Ia) or the acrylate (Ib) reacts with the dienes (II), (IV), (VI), or (VIII) to give the cycloadducts (III), (V), (VII), or (IX).
ChemInform Abstract: Hydroxy Group Inversion in Thiazole Polyols by an Oxidation‐Reduction Sequence. An Entry to syn‐1,2‐Diol Fragments in Masked Carbohydrates.
Authors: DONDONI A. , FANTIN G. , FOGAGNOLO M. , MEDICI A. , PEDRINI P. 
Published: May 2016

AbstractOxidation of the anti‐configurated thiazolyl carbinols (I) and (IV) with potassium permanganate leads to the formation of ketones (II) and (V) which are reduced with sodium borohydride or L‐selectride, predominantly yielding the syn‐configurated products (III) and (VI).
ChemInform Abstract: Cyclization of 6‐Hydroxy‐2‐ynals and Ynoates: A New Pathway to Substituted 2‐Methylene‐tetrahydrofurans.
Authors: PFLIEGER D. , MUCKENSTURM B. 
Published: May 2016

AbstractThe 2‐methylene‐tetrahydrofuran (VII) is prepared as an analogue of the insect antifeedant bisabolangelone (VIII), the key step being the cyclization of the acetylenic alcohol (III).
ChemInform Abstract: The Electroformation of a Ru + Ag Surface Alloy
Authors: QUIROZ M. A. , SALGADO L. , GONZALEZ I. , MEAS Y. , ROJAS‐HERNANDEZ A. , VELA A. 
Published: May 2016

Abstractis observed during the electrodeposition of silver on polycrystalline Ru‐electrodes from a Ag2SO4/H2SO4 solution.
ChemInform Abstract: Synthesis and Characterization of New hypho‐Dithiaborane Clusters: Structural and Bonding Links Between Electron‐Deficient and Electron‐Precise Cage Systems.
Authors: KANG S. O. , SNEDDON L. G. 
Published: May 2016

AbstractThe new hypho‐dithiaborane clusters (III), (IV), and (VIII) are prepared according to the scheme and their structures are discussed in detail.
ChemInform Abstract: N,N′‐Bispyridoxylethylenediamine‐N,N′‐diacetic Acid (PLED) and N,N′‐Bis(2‐hydroxy‐5‐sulfobenzyl)ethylenediamine‐N,N′‐diacetic Acid (SHBED).
Authors: MOTEKAITIS R. J. , SUN Y. , MARTELL A. E. 
Published: May 2016

AbstractThe sexadentate title ligands (IV) and (VIII) are prepared for the first time in pure form.
ChemInform Abstract: Intramolecular (2 + 2)Cycloadditions of Keteniminium Salts Derived from α‐ and β‐Amino Acids. A Route to Azabicyclic Ketones.
Authors: GOBEAUX B. , GHOSEZ L. 
Published: May 2016

AbstractConsecutive treatment of the unsaturated N‐tosylaminoamides (I) with triflic anhydride and collidine followed by hydrolysis yields a mixture of the bicyclic amino ketones (II) and (III).
ChemInform Abstract: Direct Formation of a Substituted (5.5.5.5)Fenestrane by Intramolecular Arene‐Olefin Photocycloaddition.
Authors: MANI J. , SCHUETTEL S. + , ZHANG C. , BIGLER P. , MUELLER C. + , KEESE R. 
Published: May 2016

AbstractIrradiation of the indan derivative (I) affords the photoproducts (II), (III) and (IV).
ChemInform Abstract: Photofragmentation via Single‐Electron Transfer: Selective Labilization of C‐C Bonds in Amino Alcohols with Several Bonds Between Heteroatom Substituents.
Authors: CI X. , WHITTEN D. G. 
Published: May 2016

AbstractPhotoreactions of (I), (III) and (VII), as donors in the presence of thioindigo or β‐lapachone as acceptors are studied.
ChemInform Abstract: Chloro(tetratolylporphyrinato)manganese(III) as a Catalyst for Oxidation of Aldehydes and Epoxidation of Propylene.
Authors: HABER J. , MLODNICKA T. , POLTOWICZ J. 
Published: May 2016

AbstractThe title catalyst is applied to the autoxidation of propionaldehyde and to the epoxidation of propylene by perpropionic acid.
ChemInform Abstract: Iodotrimethylsilane Deoxygenation of Carbonyl Conjugated Allylic Ethers.
Authors: HARTMAN D. A. , CURLEY R. W. JUN. 
Published: May 2016

Abstract4‐Methoxy‐β‐ionone (I) is not O‐demethylated upon treatment with trimethylsilyl iodide to form the alcohol (III); β‐ionone (II) is obtained instead via reduction.
ChemInform Abstract: Alkynylation of the Ethylene Ketal of 1‐Chloro‐4‐bromo‐1E‐buten‐3‐one. Synthesis of Enynic and Dienic Fragments of Leucotrienes and Pheromones.
Authors: LOPP M. I. , PAYU A. I. , KANGER T. P. , VYALIMYAE T. K. , LILLE YU. E. 
Published: May 2016

AbstractStarting from the title compound (I) the enyone (IV) and the dienone (V) are prepared.
ChemInform Abstract: Palladium‐Catalyzed Arylation of Ethylene with Arylsulfonyl Chlorides.
Authors: KASAHARA A. , IZUMI T. , MIYAMOTO K. , SAKAI T. 
Published: May 2016

AbstractTreatment of the arylsulfonyl chlorides (I) with ethylene (II) in the presence of palladium diacetate and a base gives the styrenes (III) as the main products, together with the stilbenes (IV).
ChemInform Abstract: Electron Transfer Processes. Part 44. Alkylations of Heterocycles by Alkylmercurials.
Authors: RUSSELL G. A. , GUO D. , BAIK W. , HERRON S. J. 
Published: May 2016

AbstractVarious organo‐mercury compounds react with heterocycles and maleic anhydrides to give the coupling products outlined in the reaction scheme.
ChemInform Abstract: 1‐Halo‐2‐propanethiones.
Authors: SHAGUN L. G. , USOV V. A. , VORONKOV M. G. , USOVA T. L. , IL'ICHEVA L. N. 
Published: May 2016

AbstractIn the presence of HCl the reaction between (I) and H2S (II) affords the highly unstable title compounds (III).
ChemInform Abstract: Chlorodesilylation of Fluorovinylsilanes. A Case of Retention of Configuration.
Authors: TELLIER F. , SAUVETRE R. , NORMANT J.‐F. 
Published: May 2016

AbstractAddition of chlorine to the difluoro(trimethylsilyl)alkenes (I) and subsequent desilylation with fluoride result in the predominant formation of the chlorodifluoroalkenes (II).
ChemInform Abstract: The Syntheses of β‐Lactams from Zinc Enolates of N,N‐Disubstituted α‐Amino Acid Esters and Imines: Substituent and Solvent Effects.
Authors: VAN DER STEEN F. H. , KLEIJN H. , JASTRZEBSKI J. T. B. H. , VAN KOTEN G. 
Published: May 2016

AbstractThe zinc enolates (III), generated from the 2‐aminocarboxylic acid esters (I) by lithiation and transmetalation with zinc chloride (II), undergo cycloaddition reaction with the imine (IV), forming the amino β‐lactams (V).
ChemInform Abstract: 2(1H)‐Quinolinones with Cardiac Stimulant Acticity. Part 2. Synthesis and Biological Activities of 6‐(N‐Linked, Five‐Membered Heteroaryl) Derivatives.
Authors: ALABASTER C. T. , BELL A. S. , CAMPBELL S. F. , ELLIS P. , HENDERSON C. G. , MORRIS D. S. , ROBERTS D. A. , RUDDOCK K. S. , SAMUELS G. M. R. , STEFANIAK M. H. 
Published: May 2016

AbstractReduction of the 4‐azolyl‐substituted nitrobenzenes (I) produces the anilines (II) which are coupled with the ethoxypropenoyl chloride (III), yielding the amides (IV).
ChemInform Abstract: (3 + 3)Cycloaddition of Trimethylenemethane to Activated Aziridines: Palladium‐Catalyzed Synthesis of Piperidines.
Authors: BAMBAL R. B. , KEMMITT R. D. W. 
Published: May 2016

AbstractThe acetoxymethallylsilane (I), which is a direct precursor of trimethylenemethane, reacts with the aziridines (II) in the presence of a palladium(0) complex to give the methylenepiperidines (III).
ChemInform Abstract: Cyclophanes. Part 29. Gas‐Phase Pyrolysis of 2,11‐Dithia(3.3)(1,2)(1,4)cyclophane S,S,S′,S′‐Tetraoxide.
Authors: BODWELL G. , ERNST L. , HOPF H. 
Published: May 2016

AbstractWhereas reaction of p‐dithiol (I) with o‐dibromide (II) in the presence of either NaOH or Cs2CO3 yields nothing but "dimer" (III), the reaction of alternatively substituted p‐dibromide (IV) and o‐dithiol (V) leads to the desired dithiaphane (VI).
ChemInform Abstract: Reaction of Trimethyl Phosphite and Hexamethylphosphorous Triamide with 2‐Methoxycarbonyl‐3,4,5‐triphenylcyclopentadienone.
Authors: FUZHENKOVA A. V. , MINSATTAROVA Z. G. 
Published: May 2016

AbstractThe cyclopentadienone (I) is coupled with trimethyl phosphite (II) to give the cyclopentadienyl phosphate (III), together with a second isomeric phosphate (IV), probably (V) or (VI).
ChemInform Abstract: A Solution and Solid State Conformation of 2‐Phosphoryl Substituted 1,3‐Oxathianes.
Authors: MIKOLAJCZYK M. , GRACZYK P. , WIECZOREK M. W. , BUJACZ G. 
Published: May 2016

AbstractThe 1,3‐oxathianes (III) are prepared and their conformations are investigated and determined in solution as well as in the solid state.
ChemInform Abstract: Reductive Coupling of Pyridazine and Benzaldehyde Azine and Reduction of Bipyridine by (C5Me5)2Sm(THF)2.
Authors: EVANS W. J. , DRUMMOND D. K. 
Published: May 2016

AbstractAs a result of the large reduction potential of the title complex (I) it reacts with C=N containing substrates such as (II), (IV) and (VI) by transferring an electron to the substrates and forming the Sm3+ species (III), (V), and (VII), respectively.
ChemInform Abstract: Photochemical Decarbonylation of (α‐Arylacyl)triphenylgermane.
Authors: KIYOOKA S. , SHIBUYA T. , SHIOTA F. , FUJIYAMA R. 
Published: May 2016

AbstractThe title compounds (III) are prepared from corresponding esters with Ph3GeLi in good yields as demonstrated for the example (IIIa).
ChemInform Abstract: Synthesis, Crystal Structure and Properties of 1,3‐(Bis(N‐methyl‐2‐imidazolideneamino)propan‐2‐ol)Cu(II) Perchlorate.
Authors: DOMAN T. N. , RICHARDSON J. F. , ARAR L. , BUCHANAN R. M. 
Published: May 2016

AbstractThe new ligand (III) is prepared and found to form a mononuclear Cu(II) complex (V) (yield not given; P1, Z=2), whose structural features resemble those proposed for the active site of galactose oxidase.
ChemInform Abstract: Synthesis, Properties and Prodrug Potential of 2‐Methyl‐2‐oxy‐ and 2‐Methyl‐2‐thio‐4H‐1,3‐benzodioxin‐4‐ones
Authors: ANKERSEN M. , NIELSEN K. K. , SENNING A. 
Published: May 2016

AbstractReview: (i.e.
ChemInform Abstract: n+‐Polysilicon Etching in CCl4/He Discharges: Characterization and Modeling.
Authors: GOGOLIDES E. , SAWIN H. H. 
Published: May 2016

AbstractEtching rate, selectivity of polysilicon over oxide, ion flux on the wafer surface, Cl concentration, and linewidth loss are measured as a function of etching conditions (power, pressure, He fraction).
ChemInform Abstract: Bimolecular Reactions of 3‐Methylene‐1,4‐cyclohexadiene (p‐Isotoluene), 5‐Methylene‐1,3‐cyclohexadiene (o‐Isotoluene), 1‐Methylene‐1,4‐dihydronaphthalene (Benzo‐p‐isotoluene), and 9‐Methylene‐9,10‐dihydroanthracene (Dibenzo‐p‐isotoluene).
Authors: GAJEWSKI J. J. , GORTVA A. M. 
Published: May 2016

AbstractReactions of the isotoluenes (I) and (II), the previously unknown benzo‐p‐isotoluene (III), and dibenzo‐p‐toluene (IV) are investigated under various conditions.
ChemInform Abstract: Intramolecular Cyclopropanation Reaction of Furanyl Diazo Ketones.
Authors: PADWA A. , WISNIEFF T. J. , WALSH E. J. 
Published: May 2016

AbstractThe rhodium(II) acetate‐catalyzed rearrangement of the α‐diazo ketones (I), derived from the corresponding 2‐furanylalkanoic acids, forms the cycloalkenones (II) and (III) via an intramolecular cyclopropanation step.
ChemInform Abstract: A New Synthesis of Some Indolecarboxylic Acids.
Authors: BAIOCCHI L. , GIANNANGELI M. 
Published: May 2016

AbstractN‐Benzylisatin (I) reacts with ethyl chloroacetate (II) in the presence of sodium ethoxide to give the indole‐2,3‐dicarboxylate (IV), together with the monocarboxylic acid (V) after hydrolysis of the intermediate spiro‐fused oxirane (III).
ChemInform Abstract: 1,3‐Dipolar Cycloadditions of Azomethine Ylides with Dipolarophiles. Part 2. Synthesis of Pyrrolizidines.
Authors: ORSINI F. , PELIZZONI F. , FORTE M. , SISTI M. , MERATI F. , GARIBOLDI P. 
Published: May 2016

AbstractProline (I) reacts with the aldehydes (III) to generate azomethine ylides which are trapped by cycloaddition with dimethyl fumarate (II) or maleate (VII) to give mixtures of the pyrrolizidines (IV) ‐ (VI) or (IV), (V), (VIII), and (IX).
ChemInform Abstract: The Stereoselective Introduction of a Hydroxy Group into the 2,8‐Dioxabicyclo(3.2.1)octan‐3‐one System.
Authors: AGER D. J. , EAST M. B. 
Published: May 2016

AbstractThe lactone (I), available from furan and α‐acetoxyacrylonitrile, is transformed into the silyl enol ether (III) which undergoes oxidation with peracids to yield the α‐hydroxy lactone (IV).
ChemInform Abstract: Pyridazines with Heteroatom Substituents in Position 3 and 5. Part 2. Regioselective Introduction of Mercapto Groups in Pyridazines.
Authors: OLESEN P. H. , KAPPE T. , BECHER J. 
Published: May 2016

AbstractThe dichloropyridazine (I) is monoalkoxylated and then treated with the sodium thiolate (IV) to give the sulfides (V).
ChemInform Abstract: The “tert.‐Amino Effect” in Heterocyclic Chemistry: Synthesis of 3,1‐Benzoxazines and 3,1‐Benzothiazines.
Authors: NIJHUIS W. H. N. , VERBOOM W. , HARKEMA S. , REINHOUDT D. N. 
Published: May 2016

AbstractThe cyclization of tertiary anilines is known to show an unexpected reactivity, when a conjugated unsaturated ortho‐substituent in the aromatic ring is present.
ChemInform Abstract: Synthesis of Some Heterocyclic Skeletons via Organoiron Complexes. Crystal and Molecular Structure of (5a,6,7,8,9,9a‐η6‐1,4‐Benzoxathiino‐(3,2‐b)pyridine)(η5‐cyclopentadieny# l)iron Hexafluorophosphate.
Authors: SUTHERLAND R. G. , PIORKO A. , LEE C. C. , SIMONSEN S. H. , LYNCH V. M. 
Published: May 2016

AbstractThe cyclopentadienyliron o‐dichlorobenzene complex (I) reacts with the 2,3‐difunctionalized pyridines (II), forming the cyclocondensation products (III) which are thermally decomplexed to yield the tricyclic heterocycles (IV).
ChemInform Abstract: On Triazoles. Part 16. The Reaction of 5‐Amino‐1,2,4‐triazoles with β‐and γ‐Oxo Esters. A Novel N‐Carbonylation Reaction.
Authors: REITER J. , VAGO P. , ESSES‐REITER K. , PONGO L. , MOLNAR H. 
Published: May 2016

AbstractEthyl acetoacetate (II) reacts with the 2‐(o‐aminophenyl)‐3‐aminotriazoles (I) to give the cyclization products (III), (Vb), and the bissubstitution product (IVa).
ChemInform Abstract: Synthesis and Molecular Inclusion of Naphtho‐ and Benzonaphtho‐Fused Pyridino Crowns ‐ Crystal Structure of a Dioxane Clathrate.
Authors: WEBER E. , KOEHLER H.‐J. + , REUTER H. 
Published: May 2016

AbstractFrom monoether (III) (improved synthesis from (I) and (II)) the crown ethers (VI) are prepared in 3 steps.
ChemInform Abstract: 1,1‐Bis(diisopropylamino)‐2‐trimethylsilyl‐1‐phosphaacetylene: A Stable Nucleophilic Carbene.
Authors: IGAU A. , BACEIREDO A. , TRINQUIER G. , BERTRAND G. 
Published: May 2016

AbstractThe carbene character of the title compound (III) is confirmed by the reactions of (III) with the electron‐poor olefins (II) and (IV), with the aldehydes (VI), and by the (1 + 1) addition reaction with tert.‐butyl isocyanide (VIII).
ChemInform Abstract: P6(C5Me5)2, a Tricyclic Polyphosphane.
Authors: JUTZI P. , KROOS R. , MUELLER A. + , PENK M. 
Published: May 2016

AbstractThe title compound (III) is prepared according to the scheme and characterized by NMR spectroscopy and X‐ray structure analysis (space group C2/c, Z=4).
ChemInform Abstract: Selenonium Salts and Selenonium Ylides of Cyclopentadiene, Pentafulvenes, Indole, and Pyrrole.
Authors: HARTKE K. , WENDEBOURG H. H. 
Published: May 2016

AbstractBy condensation of the selenoxides (II) with trimethylsilylcyclopentadiene (III), the selenoniocyclopentadienide (I) and (IV) are formed as shown in the scheme.
ChemInform Abstract: Preparation, Structure, and Magnetochemistry of Hexanuclear Manganese Oxide Complexes: Chemically and Thermally Induced Aggregation of Mn3O(O2CPh)6(py)2(H2O) Forming Products Containing the (Mn6O2)10+ Core.
Authors: SCHAKE A. R. , VINCENT J. B. , LI Q. , BOYD P. D. W. , FOLTING K. , HUFFMAN J. C. , HENDRICKSON D. N. , CHRISTOU G. 
Published: May 2016

AbstractA variety of synthetic procedures are described which convert the trinuclear title complex into the hexanuclear complexes (I).
ChemInform Abstract: FeI3SC(NMe2)2, a Neutral Thiourea Complex of Iron(III) Iodide.
Authors: POHL S. , BIERBACH U. , SAAK W. 
Published: May 2016

AbstractThe title complex (IV) is obtained in a simple reaction and characterized by IR and electronic spectra and an X‐ray diffraction analysis (P21/c, Z=4).
ChemInform Abstract: Synthesis and X‐Ray Crystal Structures of Ni4 and Zn4 Complexes of a Macrocyclic Tetranucleating Ligand.
Authors: BELL M. , EDWARDS A. J. , HOSKINS B. F. , KACHAB E. H. , ROBSON R. 
Published: May 2016

AbstractThe tetranuclear complexes (I) and (II) of the macrocyclic tetra Schiff base formed by condensation of two molecules of 2,6‐diformyl‐4‐methylphenol with two molecules of 2,6‐bis(aminomethyl)‐4‐methylphenol in the presence of Ni(II) or Zn(II) acetate, sodium acetate and acetic acid (for (II) yield given in g).
ChemInform Abstract: Pyrrolyl, Hydroxo, and Carbonate Organometallic Derivatives of Nickel(II). Crystal and Molecular Structure of (Ni(CH2C6H4‐o‐Me)(PMe3)(μ‐OH))2·2,5 HNC4H2Me2.
Authors: CARMONA E. , MARIN J. M. , PALMA P. , PANEQUE M. , POVEDA M. L. 
Published: May 2016

AbstractPyrrolyl derivatives such as (III) are prepared.
ChemInform Abstract: Heteronuclear Trinuclear Complexes of a Macrocyclic Ligand Containing Two “Soft” (Cu2+, Ni2+) Metal Centers with Cocomplexation of Ba2+.
Authors: VAN VEGGEL F. C. J. M. , BOS M. , HARKEMA S. , VERBOOM W. , REINHOUDT D. N. 
Published: May 2016

AbstractIn the Ba complex (IV), crystallizing in P1 with Z=4, the novel macrocycle is folded so that all the oxygen atoms are coordinated to Ba.
ChemInform Abstract: Axial vs Equatorial Substitution of Os3(CO)12 with Anionic Ligands. Crystal and Molecular Structures of PPN(Os3X(CO)11) (X: Br, I).
Authors: ZUFFA J. L. , KIVI S. J. , GLADFELTER W. L. 
Published: May 2016

AbstractCO substitution reactions of the Os3 cluster (I) lead to the ionic products (IV) as shown in the scheme.
ChemInform Abstract: Synthesis and Reactivity of Alkoxy(η4‐cycloocta‐1,5‐diene)iridium(I) and ‐rhodium(I) M(OR)(cod)(PCy3) Compounds. X‐Ray Crystal Structure of the Alkynyl Ir(CCPh)(cod)(PCy3) Complex.
Authors: FERNANDEZ M. J. , ESTERUELAS M. A. , COVARRUBIAS M. , ORO L. A. , APREDA M.‐C. , FOCES‐FOCES C. , CANO F. H. 
Published: May 2016

AbstractThe alk‐ and phenoxy title complexes (III) are synthesized according to the scheme.
ChemInform Abstract: 2‐(Methylpyridyl)‐X‐azolo(4,5‐b)pyridines: Bases, Salts, and Polymethine Dyes.
Authors: SAVARINO P. , CARPIGNANO R. , VISCARDI G. , BARNI E. , DI MODICA G. 
Published: May 2016

AbstractThe nicotinic acids (I) are coupled with 2,3‐diaminopyridine (IIa) or 2‐amino‐3‐hydroxypyridine (IIb), yielding the pyridylimidazo(oxazolo)pyridines (III).
ChemInform Abstract: Bacterial Constituents. Part 37. Pyoverdin‐Type Siderophores from Pseudomonas aeruginosa.
Authors: BRISKOT G. , TARAZ K. , BUDZIKIEWICZ H. 
Published: May 2016

AbstractThe structures of pyoverdin C (Ia), D (Ib), and E (Ic) isolated from the culture medium of Pseudomonas aeruginosa (which are identical with the pyoverdins PaB, PaA, and Pa) are elucidated by spectroscopic methods and degradation studies.
ChemInform Abstract: Synthesis of a Metabolite of Ciamexon Conjugated with D‐Glucuronic Acid.
Authors: SCHULTZ M. , ZOERKLER G. + 
Published: May 2016

AbstractIn the presence of silver triflate the reaction between the readily available α‐bromide (I) and the alcohol (II) affords an ortho‐ester, which undergoes spontaneous rearrangement under the conditions depicted in the scheme to give the β‐O‐glucuronide (III).
ChemInform Abstract: New Furo(3,2‐b)furans Derived from L‐Ascorbic Acid.
Authors: SUSSANGKARN K. , FODOR G. , STROPE D. , GEORGE C. 
Published: May 2016

AbstractAcid‐catalyzed cyclization reaction of the cyclohexenedione (I) with L‐ascorbic acid (II) produces the gulonolactone (III).
Using simulations to evaluate Mantel‐based methods for assessing landscape resistance to gene flow
Authors: Zeller Katherine A. , Creech Tyler G. , Millette Katie L. , Crowhurst Rachel S. , Long Robert A. , Wagner Helene H. , Balkenhol Niko , Landguth Erin L. 
Published: May 2016

AbstractMantel‐based tests have been the primary analytical methods for understanding how landscape features influence observed spatial genetic structure. Simulation studies examining Mantel‐based approaches have highlighted major challenges associated with the use of such tests and fueled debate on when the Mantel test is appropriate for landscape genetics studies. We aim to provide some clarity in this debate using spatially explicit, individual‐based, genetic simulations to examine the effects of the following on the performance of Mantel‐based methods: (1) landscape configuration, (2) spatial genetic nonequilibrium, (3) nonlinear relationships between genetic and cost distances, and (4) correlation among cost distances derived from competing resistance models. Under most conditions, Mantel‐based methods performed poorly. Causal modeling identified the true model only 22% of the time. Using relative support and simple Mantelrvalues boosted performance to approximately 50%. Across all methods, performance increased when landscapes were more fragmented, spatial genetic equilibrium was reached, and the relationship between cost distance and genetic distance was linearized. Performance depended on cost distance correlations among resistance models rather than cell‐wise resistance correlations. Given these results, we suggest that the use of Mantel tests with linearized relationships is appropriate for discriminating among resistance models that have cost distance correlations <0.85 with each other for causal modeling, or <0.95 for relative support or simple Mantelr. Because most alternative parameterizations of resistance for the same landscape variable will result in highly correlated cost distances, the use of Mantel test‐based methods to fine‐tune resistance values will often not be effective.