bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of plasticizers on the mechanical and barrier properties of cast biopolymer films
Authors: Jost Verena , Stramm Cornelia 
Published: June 2015

ABSTRACTThe potential of biopolymers for packaging application is often limited due to their poor processability. In this study, the effect of commonly used plasticizers on the properties of different cast biopolymer films is investigated. This enables a valuation of the potential of different biopolymers as packaging materials and an estimation of the effectiveness of plasticizers for certain biopolymer systems. Polysaccharides (corn starch and alginate) and plant proteins (wheat gluten and pea protein) were tested as film materials. To improve the processability by decreasing the brittleness of these cast biopolymer films, glycerol (Gly), sorbitol (Sor), and triethanolamine (TEA) were added as plasticizers. The structural, mechanical, and barrier properties to water vapor and oxygen were characterized in order to study the effectiveness of the plasticizers and their respective influence on the film properties. The mechanical results show there was a plasticizing effect with all the plasticizers, but the influence on the barrier properties depends on the specific plasticizer: While glycerol (Gly) leads to an increase in water vapor and oxygen permeability (OP), Sor leads to almost constant, and TEA even to decreased OP of the biopolymer films. Therefore, careful selection of the plasticizer allows biopolymer films with improved processability and high or low permeabilities to be manufactured. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42513.
Optimization of comb‐shaped polycarboxylate cement dispersants to achieve fast‐flowing mortar and concrete
Authors: Lange Alex , Plank Johann 
Published: June 2015

ABSTRACTConcretes and mortars possessing a low water‐to‐cement (w/c) ratio (<0.40) liquefied with comb‐shaped polycarboxylate (PCE) copolymers commonly exhibit a sticky, honey‐like consistency, and slow flow behavior. The stickiness is owed to high plastic viscosity of the suspension. In this study, different PCE comb polymers based on methacrylate ester, allyl, vinyl, and isoprenyl ether macromonomers were synthesized and analyzed. It was found that their hydrophilic–lipophilic balance (HLB) value, i.e., the balance between the hydrophilic and lipophilic parts in these PCE molecules determines their effect on the plastic viscosity of a concrete. PCE copolymers mainly composed of hydrophilic parts, i.e., such possessing high HLB values, impart low plastic viscosity. Allyl ether—maleic acid based PCEs exhibit especially high HLB values and thus impart low plastic viscosity. Higher viscosities were recorded for isoprenylether PCEs, while methacrylate‐ester and vinyl ether PCEs possess particularly low HLB values and hence produce a pronounced sticky concrete. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42529.
Carbon nanotubes/chitin nanowhiskers aerogel achieved by quaternization‐induced gelation
Authors: Garcia Ignacio , Azcune Itxaso , Casuso Pablo , Carrasco Pedro M. , Grande Hans‐J. , Cabañero Germán , Katsigiannopoulos Dimitrios , Grana Eftychia , Dimos Konstantinos , Karakassides Michael A. , Odriozola Ibon , Avgeropoulos Apostolos 
Published: June 2015

ABSTRACTOrganic aerogels from polysaccharides such as cellulose and chitin are of particular importance because they utilize renewable feedstocks. In this article, the aerogels were prepared through the self‐assembly of chitin nanowhiskers previously modified. The surface of chitin nanowhiskers was rendered cationic through two reactions. A first reaction between hydroxyl groups of chitin and 2‐chloroethyl isocyanate and a second reaction between the chloride groups of isocyanate anchored to the surface and 1‐methylimidazole. This modification led to stable aqueous suspensions of the chitin nanowhiskers with gelation and rheological properties. Additionally, chitin nanowhiskers aerogels containing modified carbon nanotubes were obtained. The addition of modified carbon nanotubes provoked a change in the morphology of the hydrogels and as a consequence, the rheological properties of the hydrogel are modified as well. In contrast from previous procedures, this method has not required any kind of solvent exchange or high pressure in order to obtain the final materials. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42547.
Persistent luminescence of CaMgSi2O6:Eu2+,Dy3+ and CaMgSi2O6:Eu2+,Ce3+ phosphors prepared using the solid‐state reaction method
Authors: Chandrakar P. , Baghel R. N. , Bisen D. P. , Chandra B. P. 
Published: June 2015

AbstractCaMgSi2O6:Eu2+,Dy3+ and CaMgSi2O6:Eu2+,Ce3+ phosphors were synthesized using the solid‐state reaction method. X‐Ray diffraction (XRD) and photoluminescence (PL) analyses were used to characterize the phosphors. The XRD results revealed that the synthesized CaMgSi2O6:Eu2+,Dy3+ and CaMgSi2O6:Eu2+,Ce3+ phosphors were crystalline and are assigned to the monoclinic structure with a space group C2/c. The calculated crystal sizes of CaMgSi2O6:Eu2+,Dy3+ and CaMgSi2O6:Eu2+,Ce3+ phosphors with a main (221) diffraction peak were 44.87 and 53.51 nm, respectively. Energy‐dispersive X‐ray spectroscopy (EDX) confirmed the proper preparation of the sample. The PL emission spectra of CaMgSi2O6:Eu2+,Dy3+ and CaMgSi2O6:Eu2+,Ce3+ phosphors have a broad band peak at 444.5 and 466 nm, respectively, which is due to electronic transition from 4f65d1 to 4f7. The afterglow results indicate that the CaMgSi2O6:Eu2+,Dy3+ phosphor has better persistence luminescence than the CaMgSi2O6:Eu2+,Ce3+ phosphor. Copyright © 2015 John Wiley & Sons, Ltd.
Sc2O@Td(19151)‐C76: Hindered Cluster Motion inside a Tetrahedral Carbon Cage Probed by Crystallographic and Computational Studies
Authors: Yang Ting , Hao Yajuan , Abella Laura , Tang Qiangqiang , Li Xiaohong , Wan Yingbo , Rodríguez‐Fortea Antonio , Poblet Josep M. , Feng Lai , Chen Ning 
Published: June 2015

AbstractA new cluster fullerene, Sc2O@Td(19151)‐C76, has been isolated and characterized by mass spectrometry, UV/Vis/NIR absorption, 45Sc NMR spectroscopy, cyclic voltammetry, and single‐crystal X‐ray diffraction. The crystallographic analysis unambiguously assigned the cage structure as Td(19151)‐C76, which is the first tetrahedral fullerene cage characterized by single‐crystal X‐ray diffraction. This study also demonstrated that the Sc2O cluster has a much smaller ScOSc angle than that of Sc2O@Cs(6)‐C82 and the Sc2O unit is fully ordered inside the Td(19151)‐C76 cage. Computational studies further revealed that the cluster motion of the Sc2O is more restrained in the Td(19151)‐C76 cage than that in the Cs(6)‐C82 cage. These results suggest that cage size affects not only the shapes but also the cluster motion inside fullerene cages.
ChemInform Abstract: Cu11In9 — Revised Crystal Structure and Its (Physicochemical) Relation to Cu10In7.
Authors: Mueller Carola J. , Lidin Sven 
Published: June 2015

AbstractCu11In9 (I) and Cu10In7 (II) are prepared by melting an 11:9 molar mixture of Cu and In (evacuated silica tubes, 1173 °C, 3 d) prior to 2 different annealing procedures (553 K, 18 d (short) or 523 K, 691 d (long)).
ChemInform Abstract: Layered Oxychlorides [PbBiO2] An+1BnO3n—1Cl2 (A: Pb/Bi, B: Fe/Ti): Intergrowth of the Hematophanite and Sillen Phases.
Authors: Batuk Maria , Batuk Dmitry , Tsirlin Alexander A. , Filimonov Dmitry S. , Sheptyakov Denis V. , Frontzek Matthias , Hadermann Joke , Abakumov Artem M. 
Published: June 2015

AbstractThe title compounds are prepared by solid state reaction of stoichiometric mixtures of PbO, PbCl2, Bi2O3, BiOCl, Fe2O3, and TiO2 (evacuated quartz tubes, 650 °C, 7 h; annealing at 750 °C, 20 h).
ChemInform Abstract: Structural, Optical and Electrical Properties of Cu2FeSnX4 (X: S, Se) Thin Films Prepared by Chemical Spray Pyrolysis.
Authors: Khadka Dhruba B. , Kim JunHo 
Published: June 2015

AbstractPolycrystalline Cu2FeSnX4 (X: S, Se) thin films are prepared by chemical spray pyrolysis of a 2:1:1:10 molar solution of Cu(OAc)2, FeCl3, SnCl2, and CS(NH2)2 in DMSO/EtOH (1:1) on bare and Mo‐coated soda lime glass substrates (450 °C) followed by annealing in S or Se vapors (500—520 °C, 25 min), which results in improved surface texture and crystallinity.
ChemInform Abstract: Topotactic Solid‐State Metal Hydride Reductions of Sr2MnO4.
Authors: Hernden Bradley C. , Lussier Joey A. , Bieringer Mario 
Published: June 2015

AbstractThe reactivity and mechanism of the solid state topotactic reduction of Sr2MnO4 using the series of metal hydrides LiH, NaH, CaH2, MgH2, SrH2, and BaH2 are characterized by powder XRD and TGA/DTA.
ChemInform Abstract: Tl2C2O4·H2C2 O4: A New Crystalline Form of Thallium(I) Oxalate.
Authors: Piro Oscar E. , Echeverria Gustavo A. , Gonzalez‐Baro Ana C. , Baran Enrique J. 
Published: June 2015

AbstractThe title compound is synthesized by addition of solid Tl2CO3 to a boiling solution of H2C2O4 in H2O (10 min, 75% yield) and characterized by single crystal XRD, FTIR, and FT Raman spectroscopy.
ChemInform Abstract: Chloride Derivatives of Lanthanoid(III) ortho‐Oxidotungstates(VI) with the Formula LnCl[WO4] (Ln: Gd—Lu): Syntheses, Crystal Structures and Spectroscopic Properties.
Authors: Schustereit Tanja , Schleid Thomas , Hoeppe Henning A. , Kazmierczak Karolina , Hartenbach Ingo 
Published: June 2015

AbstractA phase pure series of LnCl[WO4] (Ln: Gd—Lu) is prepared by solid state reaction of Ln2O3, LnCl3, and WO3 in the molar ratio 1:5:3 (evacuated silica tubes, 950 °C, 7 d) with LnCl3 acting as reactive flux.
ChemInform Abstract: 1,3‐Dipolar Cycloadditions of α‐Diazo Ketones Derived from N‐Protected (S)‐Proline with Aromatic and Cycloaliphatic Thioketones.
Authors: Mloston Grzegorz , Pipiak Paulina , Linden Anthony , Heimgartner Heinz 
Published: June 2015

AbstractThe isolated products (III), (V), and (VII) are optically active and therefore the multistep processes occur with retention of the stereogenic center.
ChemInform Abstract: [4 + 2]‐Annulations of Aminocyclobutanes.
Authors: Perrotta Daniele , Racine Sophie , Vuilleumier Jeremy , de Nanteuil Florian , Waser Jerome 
Published: June 2015

AbstractThe first [4 + 2]‐annulation between aminocyclobutanes and aldehydes to access tetrahydropyranyl amines is reported.
ChemInform Abstract: Base‐Mediated Cascade Rearrangements of Aryl‐Substituted Diallyl Ethers.
Authors: Reid Jolene P. , McAdam Catherine A. , Johnston Adam J. S. , Grayson Matthew N. , Goodman Jonathan M. , Cook Matthew J. 
Published: June 2015

AbstractSelective Wittig‐oxy‐Cope and isomerization‐Claisen rearrangements of diallylethers are investigated.
ChemInform Abstract: Mild and Selective Et2Zn‐Catalyzed Reduction of Tertiary Amides under Hydrosilylation Conditions.
Authors: Kovalenko Oleksandr O. , Volkov Alexey , Adolfsson Hans 
Published: June 2015

AbstractA range of tertiary aryl, hetaryl, and alkyl amides equipped with a variety of functional groups is reduced in good to excellent yields.
ChemInform Abstract: C—H Functionalization of Phenols Using Combined Ruthenium and Photoredox Catalysis: In situ Generation of the Oxidant.
Authors: Fabry David C. , Ronge Meria A. , Zoller Jochen , Rueping Magnus 
Published: June 2015

AbstractA combined photoredox and metal catalyst is used for the ortho‐selective C—H functionalization of (2‐pyridyl)phenols with activated olefins.
ChemInform Abstract: Cobalt‐Catalyzed Directed Alkylation of Olefinic C—H Bond with Primary and Secondary Alkyl Chlorides.
Authors: Yamakawa Takeshi , Seto Yuan Wah , Yoshikai Naohiko 
Published: June 2015

AbstractThe reaction succeeds using a 2‐pyridyl group as the directing group, but is delivered with low or no yield when switching to a pyrazole or imine group.
ChemInform Abstract: Domino Reaction of N‐(Cyanomethyl)‐1,3‐azolium Quaternary Salts with O‐Hydroxybenzaldehydes: Scope and Limitations.
Authors: Voskressensky L. G. , Festa A. A. , Storozhenko O. A. , Le T. A. , Nguyen V. T. , Varlamov A. V. 
Published: June 2015

AbstractA series of imidazo[5,1‐c][1,4]thiazine derivatives is prepared.
ChemInform Abstract: Organo‐Manganese η2‐Auxiliary Directed Reactions: A Diastereoselective Approach to 2,3‐Allenols.
Authors: Roy Animesh , Bhat Bilal A. , Lepore Salvatore D. 
Published: June 2015

AbstractThe recently published complexation of chiral allenyl aldehydes with methylcyclopentadienyl manganese tricarbonyl efficiently addresses the weak stereoinduction of the allenic moiety by transmitting the chiral information closer to the aldehyde group.
ChemInform Abstract: Reactions of Organozinc Reagents with Potassium Bromodifluoroacetate.
Authors: Levin Vitalij V. , Zemtsov Artem A. , Struchkova Marina I. , Dilman Alexander D. 
Published: June 2015

AbstractA method is presented for the synthesis of gem‐difluorinated compounds from organozinc reagents.
ChemInform Abstract: Studies on N‐Activation for the Lipase‐Catalyzed Enantioselective Preparation of β‐Amino Esters from 4‐Phenylazetidin‐2‐one.
Authors: Sundell Riku 
Published: June 2015

AbstractKinetic resolution of azetidinones (I) with methanol and candida antarctica lipase B provides β‐amino esters with excellent enantiomeric excess.
ChemInform Abstract: Functionalized α,α‐Dibromo Esters Through Claisen Rearrangements of Dibromoketene Acetals.
Authors: Dupper Nathan J. , Kwon Ohyun 
Published: June 2015

AbstractTitle compounds are obtained in a two‐step process which consists of a formation of a bromal‐derived mixed acetal, followed by tandem dehydrobromination/Claisen rearrangement.
ChemInform Abstract: Selective Trifluoromethylthiolation of Heteroaromatic sp2 C—H Bonds with the 2nd Generation of Trifluoromethanesulfenamide Reagent.
Authors: Alazet Sebastien , Zimmer Luc , Billard Thierry 
Published: June 2015

AbstractThe selective trifluoromethylthiolation of heteroaromatic compound is described.
ChemInform Abstract: Regiocontrol in Catalytic Reductive Couplings Through Alterations of Silane Rate Dependence.
Authors: Jackson Evan P. , Montgomery John 
Published: June 2015

AbstractA method is investigated which governs the regioselectivity in Ni‐catalyzed alkyne—aldehyde coupling and allows the access to the regioisomer which is normally formed as the minor one.
ChemInform Abstract: Facile Development of Chiral Alkenylboranes from Chiral Diynes for Asymmetric Hydrogenation of Silyl Enol Ethers.
Authors: Ren Xiaoyu , Li Gen , Wei Simin , Du Haifeng 
Published: June 2015

AbstractThe metal—free asymmetric hydrogenation of silyl enol ethers is carried out using in situ generated chiral borane with the combination of tBu3P as catalyst.
ChemInform Abstract: (E)‐α,β‐Unsaturated Amides from Tertiary Amines, Olefins and CO via Pd/Cu‐Catalyzed Aerobic Oxidative N‐Dealkylation.
Authors: Shi Renyi , Zhang Hua , Lu Lijun , Gan Pei , Sha Yuchen , Zhang Heng , Liu Qiang , Beller Matthias , Lei Aiwen 
Published: June 2015

AbstractThe Pd/Cu‐catalyzed reaction of alkenes (I) with CO and tributylamine leads to a series of (E)‐α,β‐unsaturated amides (IV).
ChemInform Abstract: Traceless Directing Groups in Radical Cascades: From Oligoalkynes to Fused Helicenes Without Tethered Initiators.
Authors: Pati Kamalkishore , dos Passos Gomes Gabriel , Harris Trevor , Hughes Audrey , Phan Hoa , Banerjee Tanmay , Hanson Kenneth , Alabugin Igor V. 
Published: June 2015

AbstractDiynes of type (I) and (III) containing methoxy groups as traceless directing groups undergo radical‐initiated cascades to form fused naphthalenes.
ChemInform Abstract: Synthesis of 2‐Aryl‐3‐(2‐cyanoethyl)aziridines and Their Chemical and Enzymatic Hydrolysis Towards γ‐Lactams and γ‐Lactones.
Authors: Mollet Karen , Decuyper Lena , Vander Meeren Saskia , Piens Nicola , De Winter Karel , Desmet Tom , D'hooghe Matthias 
Published: June 2015

AbstractThe title compounds (IV) are transformed into variable mixtures of 4‐[aryl(alkylamino)methyl]butyrolactones and 5‐[aryl(hydroxy)methyl]pyrrolidin‐2‐ones by KOH‐mediated hydrolysis of the cyano group, followed by ring expansion.
ChemInform Abstract: Enantioconvergent Synthesis of Functionalized γ‐Butyrolactones via (3 + 2)‐Annulation.
Authors: Goodman C. Guy , Walker Morgan M. , Johnson Jeffrey S. 
Published: June 2015

AbstractA chiral N‐heterocyclic carbene‐catalyzed a3 → d3‐umpolung addition of α,β‐enals to racemic α‐keto esters gives access to γ‐butyrolactones with high regio‐, diastereo‐, and enantiocontrol.
ChemInform Abstract: Iridium‐Catalyzed Asymmetric Hydrogenation of 2‐Pyridyl Cyclic Imines: A Highly Enantioselective Approach to Nicotine Derivatives.
Authors: Guo Cui , Sun Dong‐Wei , Yang Shuang , Mao Shen‐Jie , Xu Xiao‐Hua , Zhu Shou‐Fei , Zhou Qi‐Lin 
Published: June 2015

AbstractA substituent adjacent to the pyridine N atom is crucial to block the coordination ability of the pyridine moiety, an effect which is evidently overturned by the proximate second N atom in substrate (Vb).
ChemInform Abstract: Enantioselective Rhodium‐Catalyzed Isomerization of 4‐Iminocrotonates: Asymmetric Synthesis of a Unique Chiral Synthon.
Authors: Zhang Wen‐Zhen , Chu John C. K. , Oberg Kevin M. , Rovis Tomislav 
Published: June 2015

AbstractA broad spectrum of iminocrotonates bearing N‐alkyl substituents is transformed to pyrrolin‐2‐one structures bearing an 5‐alkoxy residue.
ChemInform Abstract: Catalytic Divergent Synthesis of 3H or 1H Pyrroles by [3 + 2] Cyclization of Allenoates with Activated Isocyanides.
Authors: Liao Jia‐Yu , Shao Pan‐Lin , Zhao Yu 
Published: June 2015

AbstractIn the presence of silver catalyst/cinchona alkaloid phosphine, a highly enantioselective synthesis of a broad spectrum of multisubstituted 3H‐pyrrole structures becomes possible.
ChemInform Abstract: Expedient Synthesis of Tetrasubstituted Pyrroles via a Copper‐Catalyzed Cascade Inter‐/Intramolecular Cyclization of 1,3‐Enynes Carry a Nitro Group with Amines.
Authors: Bharathiraja Ganesan , Sengoden Mani , Kannan Masanam , Punniyamurthy Tharmalingam 
Published: June 2015

AbstractA wide range of tetrasubstituted pyrroles/pyrazoles are efficiently synthesized via a copper‐catalyzed cascade aza‐Michael addition, cyclization, and aromatization using air as oxidant under mild and eco‐friendly reaction conditions.
ChemInform Abstract: Copper‐Catalyzed Alkylarylation of Activated Alkenes Using AIBN and Beyond: An Access to Cyano‐Containing Oxindoles.
Authors: Zhou Dong , Li Zi‐Hao , Li Jie , Li Shu‐Hua , Wang Ming‐Wei , Luo Xiao‐Ling , Ding Guo‐Liang , Sheng Rui‐Long , Fu Mei‐Jun , Tang Shi 
Published: June 2015

AbstractCopper‐catalyzed oxidative radical alkylarylation using N‐arylacrylamides and azo compounds (II) or (VIII) produces oxindoles through a cascade addition/C(sp2)—H cyclization process.
ChemInform Abstract: Organocatalytic Asymmetric Cascade Reactions of 7‐Vinylindoles: Diastereo‐ and Enantioselective Synthesis of C7‐Functionalized Indoles.
Authors: Shi Feng , Zhang Hong‐Hao , Sun Xiao‐Xue , Liang Jing , Fan Tao , Tu Shu‐Jiang 
Published: June 2015

AbstractA slight excess of 7‐vinylindole substrate reacts with isatin‐derived 3‐indolylmethanols in the presence of chiral phosphoric acid BNPA to produce the desired C‐7 functionalized structures combined with cyclopenta[b]indole/spirooxindole frameworks.
ChemInform Abstract: Oxidation Strategy for the Synthesis of Regioisomeric Spiroisobenzofuranopyrroles: Facile Entries to Spiro[isobenzofuran‐1,2′‐pyrrole] and Spiro[isobenzofuran‐1,3′‐pyrrole] Derivatives.
Authors: Fan Yefeng , Liu Song , Chen Nanyang , Shao Xusheng , Xu Xiaoyong , Li Zhong 
Published: June 2015

AbstractOperationally simple and mild approaches to the title compounds based on either two‐ or one‐step procedures are elaborated which display good functional group tolerance and provide the desired regioisomeric products in moderate to excellent yields.
ChemInform Abstract: An Iron‐Catalyzed Cascade Approach to Benzo[b]carbazole Synthesis Followed by 1,4‐Sulfonyl Migration.
Authors: Boominathan Siva Senthil Kumar , Senadi Gopal Chandru , Vandavasi Jaya Kishore , Chen Jeff Yi‐Fu , Wang Jeh‐Jeng 
Published: June 2015

AbstractThe biologically interesting N‐heterocyclic scaffold is readily obtained under conditions A).
ChemInform Abstract: Cu‐Promoted Sydnone Cycloadditions of Alkynes: Scope and Mechanism Studies.
Authors: Comas‐Barcelo Julia , Foster Robert S. , Fiser Bela , Gomez‐Bengoa Enrique , Harrity Joseph P. A. 
Published: June 2015

AbstractThe process is significantly accelerated in the presence of copper salts: the reaction time can be reduced from <12h to a few hours or even 20 min.
ChemInform Abstract: Synthesis and Structural Studies of Novel Fused Seven‐Membered Carbocycles Derived from exo‐2‐Oxazolidinone Dienes Through (4 + 3) Cycloadditions.
Authors: Alcazar Patricia , Cruz Indira , Gonzalez‐Romero Carlos , Cuevas‐Yanez Erick , Diaz Eduardo , Tamariz Joaquin , Jimenez‐Vazquez Hugo A. , Corona‐Becerril David , Toscano Ruben A. , Fuentes‐Benites Aydee 
Published: June 2015

AbstractWhile (Ia) gives the exo‐adduct (IIIa) as the single product, (Ib)—(Id) and (V) give exo/endo mixtures.
ChemInform Abstract: Chemoselective Activation of sp3 vs sp2 C—H Bonds with Pd(II).
Authors: Curto John M. , Kozlowski Marisa C. 
Published: June 2015

AbstractFor the first time, the chemoselective coupling of a carbon nucleophile with methyl, ethyl, propyl, and butyl arenes in the absence of a directing group is described.
ChemInform Abstract: Copper‐Catalyzed Direct Amination of 1,2,3‐Triazole N‐Oxides by C—H Activation and C—N Coupling.
Authors: Zhu Jiayi , Kong Yubo , Lin Feng , Wang Baoshuang , Chen Zhengwang , Liu Liangxian 
Published: June 2015

AbstractThis facile protocol allows the synthesis of a wide range of 2‐aryl‐4‐amino triazoles.
ChemInform Abstract: Highly Enantioselective Synthesis of 3,4‐Dihydropyrans Through a Phosphine‐Catalyzed [4 + 2] Annulation of Allenones and β,γ‐Unsaturated α‐Keto Esters.
Authors: Yao Weijun , Dou Xiaowei , Lu Yixin 
Published: June 2015

AbstractA novel [4 + 2] annulation process is developed employing β,γ‐unsaturated α‐keto esters as C4 building blocks and allene ketones as C2 synthons.
ChemInform Abstract: Pericyclic Reactions of Azafulvenium Methides Bearing Internal Dipolarophiles — Synthesis of Chromene and Chromane Derivatives.
Authors: Ribeiro Laia Fernanda M. , Soares Maria I. L. , Gomes Clara S. B. , Pinho e Melo Teresa M. V. D. 
Published: June 2015

AbstractThe reactivity of azafulvenium methides with internal dipolarophiles is explored as an approach to new chromene derivatives.
ChemInform Abstract: Approach to 3‐(Cyclo)alkylpiperidines Through ′sp3—sp3 via sp2—sp3′ Coupling.
Authors: Subota Andrii I. , Grygorenko Oleksandr O. , Valter Yevheniia B. , Tairov Maxim A. , Artamonov Oleksiy S. , Volochnyuk Dmitriy M. , Ryabukhin Sergey V. 
Published: June 2015

AbstractA two‐step procedure providing the title compounds on a multigram scale is developed.
ChemInform Abstract: Highly Efficient Dehydrogenative Coupling of Hydrosilanes with Amines or Amides Using Supported Gold Nanoparticles.
Authors: Mitsudome Takato , Urayama Teppei , Maeno Zen , Mizugaki Tomoo , Jitsukawa Koichiro , Kaneda Kiyotomi 
Published: June 2015

AbstractHydroxyapatite‐supported gold nanoparticles with a mean diameter of 3.0 nm are found to be optimal for the preparation of monoaminesilanes or ‐silylamides using equimolar ratio of reactants.
ChemInform Abstract: Cyclopentenone Derivatives and Polyhydroxylated Steroids from the Soft Coral Sinularia acuta.
Authors: Zhang Nai‐Xia , Tang Xu‐Li , van Ofwegen Leen , Xue Lei , Song Wen‐Juan , Li Ping‐Lin , Li Guo‐Qiang 
Published: June 2015

AbstractFour new polyhydroxylated steroids and the racemic form of cyclopentanone, sinularone J (IV), are isolated along with four known steroids, one known cyclopentanone derivative, and one known butenolide derivative from the soft coral Sinularia acuta.
ChemInform Abstract: Microscopic Studies of Nonlocal Spin Dynamics and Spin Transport (Invited)
Authors: Adur Rohan , Du Chunhui , Cardellino Jeremy , Scozzaro Nicolas , Wolfe Christopher S. , Wang Hailong , Herman Michael , Bhallamudi Vidya P. , Pelekhov Denis V. , Yang Fengyuan , et al.  
Published: June 2015

AbstractReview: 25 refs.