bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Nature of [PdCl2(C2H4)(H2O)] as an Active Species in the Wacker Process: New Insights from Ab Initio Molecular Dynamics Simulations
Authors: Kovács Gábor , Stirling András , Lledós Agustí , Ujaque Gregori 
Published: March 2012

AbstractFirst‐principles molecular dynamics coupled with metadynamics have been used to gain a deeper insight into the reaction mechanism of the Wacker process by determining the nature of the active species. An explicit and dynamic representation of the aqueous solvent, which was essential for modeling this reaction, was efficiently included into the simulations. Prompted by our earlier results, which showed that the configuration of the catalytically active species [PdCl2(H2O)(C2H4)] was crucial in the subsequent steps of the Wacker process, herein we focused on the preceding equilibria that led to the formation of both the cis and trans isomers. Starting from the initial catalyst, [PdCl4]2−, the free‐energy barriers for the forward and backward reactions were calculated. These results confirmed the relevance of the trans intermediate in the reaction mechanism, whilst conversely, they showed that the cis configuration played no role in it. This sole participation of the trans intermediate has some very important implications; besides the mechanistic interpretation of the initial steps in the Wacker reaction mechanism, the analysis of these equilibria provides additional information about the chemical nature of these ligand‐substitution processes.
Structural Transformation with “Negative Volume Expansion”: Chemical Bonding and Physical Behavior of TiGePt
Authors: Ackerbauer S.‐V. , Senyshyn A. , Borrmann H. , Burkhardt U. , Ormeci A. , Rosner H. , Schnelle W. , Gamża M. , Gumeniuk R. , Ramlau R. , Bischoff E. , Schuster J. C. , Weitzer F. , Leithe‐Jasper A. , Tjeng L. H. , Grin Yu. 
Published: March 2012

AbstractThe synthesis and a joint experimental and theoretical study of the crystal structure and physical properties of the new ternary intermetallic compound TiGePt are presented. Upon heating, TiGePt exhibits an unusual structural phase transition with a huge volume contraction of about 10 %. The transformation is characterized by a strong change in the physical properties, in particular, by an insulator–metal transition. At temperatures below 885 °C TiGePt crystallizes in the cubic MgAgAs (half‐Heusler) type (LT phase, space groupF$\bar 4$3m,a=5.9349(2) Å). At elevated temperatures, the crystal structure of TiGePt transforms into the TiNiSi structure type (HT phase, space groupPnma,a=6.38134(9) Å,b=3.89081(5) Å,c=7.5034(1) Å). The reversible, temperature‐dependent structural transition was investigated by in‐situ neutron powder diffraction and dilatometry measurements. The insulator–metal transition, indicated by resistivity measurements, is in accord with band structure calculations yielding a gap of about 0.9 eV for the LT phase and a metallic HT phase. Detailed analysis of the chemical bonding in both modifications revealed an essential change of the Ti–Pt and Ti–Ge interactions as the origin of the dramatic changes in the physical properties.
Niobium(V) Oxynitride: Synthesis, Characterization, and Feasibility as Anode Material for Rechargeable Lithium‐Ion Batteries
Authors: Wang Xiao‐Jun , Krumeich Frank , Wörle Michael , Nesper Reinhard , Jantsky Laurent , Fjellvåg Helmer 
Published: March 2012

AbstractThe decomposition reaction of niobium(V) oxytrichloride ammoniate to the oxynitride of niobium in the 5+ oxidation state was developed in a methodological way. By combining elemental analysis, Rietveld refinements of X‐ray and neutron diffraction data, SEM and TEM, the sample compound was identified as approximately 5 nm‐diameter particles of NbO1.3(1)N0.7(1) crystallizing with baddeleyite‐type structure. The thermal stability of this compound was studied in detail by thermogravimetric/differential thermal analysis and temperature‐dependent X‐ray diffraction. Moreover, the electrochemical uptake and release by the galvanostatic cycling method of pure and carbon‐coated NbO1.3(1)N0.7(1) versus lithium was investigated as an example of an Li‐free transition‐metal oxynitride. The results showed that reversible capacities as high as 250 and 80 A h kg−1 can be reached in voltage ranges of 0.05–3 and 1–3 V, respectively. Furthermore, a plausible mechanism for the charge–discharge reaction is proposed.
Endohedral Metallofullerenes—Filled Fullerene Derivatives towards Multifunctional Reaction Center Mimics
Authors: Rudolf Marc , Wolfrum Silke , Guldi Dirk M. , Feng Lai , Tsuchiya Takahiro , Akasaka Takeshi , Echegoyen Luis 
Published: March 2012

AbstractIn recent years, endohedral metallofullerenes have attracted tremendous interest not only in physics and chemistry, but also in interdisciplinary areas, such as materials and biological sciences. In this concept article we highlight recent results on different endohedral metallofullerenes based on lanthanides and their derivatives. The chemical and excited state reactivities of endohedral metallofullerenes are discussed for various endohedral clusters. Most important is the part that covers spectroscopic and kinetic assays of reductive and oxidative charge transfer evolving from photoexcited electron donors and electron acceptors, respectively, in a variety of electron donor–acceptor conjugates. Towards this end, we refer to the applications of endohedral metallofullerenes in photovoltaic devices that feature greater efficiency than devices fabricated with empty fullerenes. Herein, we focus mainly on results obtained in the groups of Akasaka, Echegoyen, and Guldi.
Synthesis, Physicochemical Properties, and Hydrogen Bonding of 4(5)‐Substituted 1‐H‐Imidazole‐2‐carboxamide, a Potential Universal Reader for DNA Sequencing by Recognition Tunneling
Authors: Liang Feng , Li Shengqing , Lindsay Stuart , Zhang Peiming 
Published: March 2012

AbstractWe have developed a chemical reagent that recognizes all naturally occurring DNA bases, a so called universal reader, for DNA sequencing by recognition tunneling in nanopores.1 The primary requirements for this type of molecules are the ability to form non‐covalent complexes with individual DNA bases and to generate recognizable electronic signatures under an electrical bias. 1‐H‐imidazole‐2‐carboxamide was designed as such a recognition moiety to interact with the DNA bases through hydrogen bonding. In the present study, we first furnished a synthetic route to 1‐H‐imidazole‐2‐carboxamide containing a short ω‐functionalized alkyl chain at its 4(5) position for its attachment to metal and carbon electrodes. The acid dissociation constants of the imidazole‐2‐carboxamide were then determined by UV spectroscopy. The data show that the 1‐H‐imidazole‐2‐carboxamide exists in a neutral form between pH 6–10. Density functional theory (DFT) and NMR studies indicate that the imidazole ring exists in prototropic tautomers. We propose an intramolecular mechanism for tautomerization of 1‐H‐imidazole‐2‐carboxamide. In addition, the imidazole‐2‐carboxamide can self‐associate to form hydrogen bonded dimers. NMR titration found that naturally occurring nucleosides interacted with 1‐H‐imidazole‐2‐carboxamide through hydrogen bonding in a tendency of dG>dC≫dT>dA. These studies are indispensable to assisting us in understanding the molecular recognition that takes place in the nanopore where routinely used analytical tools such as NMR and FTIR cannot be conveniently applied.
Amine‐Catalyzed [3+2] Huisgen Cycloaddition Strategy for the Efficient Assembly of Highly Substituted 1,2,3‐Triazoles
Authors: Wang Lei , Peng Shiyong , Danence Lee Jin Tu , Gao Yaojun , Wang Jian 
Published: March 2012

AbstractAn enamine‐catalyzed strategy has been utilized to fully promote the Huisgen [3+2] cycloaddition with a broad spectrum of carbonyl compounds and azides, thereby permitting the efficient assembly of a vast pool of highly substituted 1,2,3‐triazoles. In particular, the employment of commonly used and commercially available carbonyl compounds has resulted in the introduction of a diverse set of functional groups, such as alkyl, aryl, nitrile, ester, and ketone groups, at the 1‐, 4‐, or 5‐positions of the 1,2,3‐triazole scaffold. This approach might be manipulated to access more useful and sophisticated heterocyclic compounds. Most significantly, the reaction process exhibits complete regioselectivity, with the formation of only one regioisomer.
Mechanistic Insight into the NN Bond‐Cleavage of Azo‐Compounds that was Induced by an AlAl‐bonded Compound [L2−AlIIAlIIL2−]
Authors: Zhao Yanxia , Liu Yanyan , Yang Ling , Yu Jian‐Guo , Li Shaoguang , Wu Biao , Yang Xiao‐Juan 
Published: March 2012

AbstractAn α‐diimine‐stabilized AlAl‐bonded compound [L2−AlIIAlIIL2−] (L=[{(2,6‐iPr2C6H3)NC(Me)}2]; 1) consists of dianionic α‐diimine ligands and sub‐valent Al2+ ions and thus could potentially behave as a multielectron reductant. The reactions of compound 1 with azo‐compounds afforded phenylimido‐bridged products [L−AlIII(μ2‐NPh)(μ2‐NAr)AlIIIL−] (2–4). During the reaction, the dianionic ligands and Al2+ ions were oxidized into monoanions and Al3+, respectively, whilst the [NAr]2− imides were produced by the four‐electron reductive cleavage of the NN double bond. Upon further reduction by Na, the monoanionic ligands in compound 2 were reduced to the dianion to give [(L2−)2AlIII2(μ2‐NPh)2Na2(thf)4] (5). Interestingly, when asymmetric azo‐compounds were used, the asymmetric adducts were isolated as the only products (compounds 3 and 4). DFT calculations indicated that the reaction was quite feasible in the singlet electronic state, but the final product with the triplet‐state monoanionic ligands could result from an exothermic singlet‐to‐triplet conversion during the reaction process.
Diffusion and Birefringence of Bioactive Dyes in a Supramolecular Guanosine Hydrogel
Authors: Das Rabindra Nath , Kumar Y. Pavan , Pagoti Sreenivasarao , Patil Avinash J. , Dash Jyotirmayee 
Published: March 2012

AbstractTransparent self‐standing supramolecular hydrogels were readily prepared by the potassium‐ion‐mediated self‐organization of guanosine and 8‐bromoguanosine whilst the individual components precipitated within a few hours. VT‐NMR spectroscopy showed that bromoguanosine was a superior gelator compared to guanosine. XRD analysis showed that gel formation was caused by stacked G‐quartets. AFM analysis revealed dendritic architectures of the nanofibers in the two‐component hydrogel network. DSC profiles showed that the hybrid hydrogels underwent sol–gel transition at lower temperature than the pure guanosine and bromoguanosine hydrogels. Interestingly, bioactive dyes, such as rose bengal, rhodamine‐6‐G, and fluorescein, could be diffused and released in a controlled manner. UV/Vis absorption and fluorescence spectroscopy and CLSM were used to investigate the diffusion behavior of dyes in the hydrogel network. These dyes exhibited strong birefringence in the gel network (0.07–0.1) as a result of the anisotropic organization.
ChemInform Abstract: At the Border of Intermetallic Compounds and Transition‐Metal Oxides: Crystal Intergrowth of the Zintl Phase Cs4Ge9 and Cs2WO4 or Cs3VO4 as well as Nine‐Atom Cluster Relocation in the Solid State.
Authors: Hlukhyy Viktor , Faessler Thomas F. 
Published: March 2012

AbstractCompounds (III) and (VI) containing [Ge9]4‐ clusters and oxometallate anions WO42‐ or VO43‐ are characterized by single crystal XRD and Raman spectroscopy.
ChemInform Abstract: BaAuxZn13‐x: Electron‐Poor Cubic NaZn13‐Type Intermetallic and Its Ordered Tetragonal Variant.
Authors: Gupta Shalabh , Corbett John D. 
Published: March 2012

AbstractBaAuxZn13‐x phases (1 ≤ x ≤ 8) are prepared in yields <90% by reaction of the elements (Ta container, 700 °C, 12 h; annealing at 600 °C, 7 d).
ChemInform Abstract: Composition Control and Thermoelectric Properties of Quaternary Chalcogenide Nanocrystals: The Case of Stannite Cu2CdSnSe4.
Authors: Cabot Andreu , et al. et al. 
Published: March 2012

AbstractCu2+xCd1‐xSnSe4 nanocrystals are prepared by a high‐yield and easily up‐scalable colloidal synthesis route.
ChemInform Abstract: Dielectric Relaxation in a New Double Perovskite Oxide Ho2MgZrO6.
Authors: Mahato Dev K. , Dutta Alo , Sinha T. P. 
Published: March 2012

AbstractThe new title compound is synthesized by solid state reaction of Ho2O3, MgO, and ZrO2 (Pt crucible, air, 1200 °C, 10 h).
ChemInform Abstract: Tantalum Cobalt Nitride Photocatalysts for Water Oxidation under Visible Light.
Authors: Cong Yanqing , Park Hyun S. , Dang Hoang X. , Fan Fu‐Ren F. , Bard Allen J. , Mullins C. Buddie 
Published: March 2012

AbstractTa0.9Co0.1Nx films are prepared by a drop coating method on a Ta foil substrate using precursor solutions of TaCl5 and Co(NO3)2 in MeOH followed by a thermal ammonia treatment.
ChemInform Abstract: Solvothermal Synthesis and Characterization of a Series of Lanthanide Thiostannates(IV): The First Examples of Inorganic—Organic Hybrid Cationic Lanthanide Thiostannates(IV).
Authors: Zhou Jian , Liu Xing , An Litao , Hu Feilong , Yan Wenbin , Zhang Yunyan 
Published: March 2012

AbstractA series of new lanthanide thiostannates(IV) is solvothermally synthesized and structurally characterized by single crystal XRD.
ChemInform Abstract: A New Bismuth Potassium Nitrate Oxide, Bi1.7K0.9O2(NO3)2: Synthesis, Structure, Thermal Behavior, and Photocatalytic Properties.
Authors: Shenawi‐Khalil S. , Uvarov V. , Charkin D. O. , Goaz A. , Popov I. , Dolgikh V. A. , Sasson Y. 
Published: March 2012

AbstractThe title compound is hydrothermally synthesized from a mixture of Bi(NO3)3 and KNO3 in H2O (tube furnace, 350 °C, 2 h).
ChemInform Abstract: Synthesis and Crystal Chemistry of the NaMSO4F Family (M: Mg, Fe, Co, Cu, Zn).
Authors: Reynaud Marine , Barpanda Prabeer , Rousse Gwenaelle , Chotard Jean‐Noel , Melot Brent C. , Recham Nadir , Tarascon Jean‐Marie 
Published: March 2012

AbstractThe new compounds (III), (VI), and (IX) crystallize as their Fe and Co counterparts with the maxwellite structure (tavorite‐like framework) in the monoclinic space group C2/c.
ChemInform Abstract: Diastereodivergent Asymmetric Sulfa‐Michael Additions of α‐Branched Enones Using a Single Chiral Organic Catalyst.
Authors: Tian Xu , Cassani Carlo , Liu Yankai , Moran Antonio , Urakawa Atsushi , Galzerano Patrizia , Arceo Elena , Melchiorre Paolo 
Published: March 2012

AbstractThe catalytic functions of quinuclidine derivative CIN can be switched by the appropriate choice of an acidic additive and the reaction media thus allowing the full control of the stereochemistry of the asymmetric conjugate addition of alkyl thiols to α‐substituted α,β‐unsaturated ketones to give either anti‐ or syn‐products with high enantioselectivities.
ChemInform Abstract: A Novel C3‐Symmetric Prolinol‐Squaramide Catalyst for the Asymmetric Reduction of Ketones by Borane.
Authors: Wu Xiang‐Fei , Min Chang , Nyamzundui Enkhtsetseg , Zhou Hai‐Bing , Dong Chune 
Published: March 2012

AbstractThe catalyst can be recycled by simple precipitation and reused for four cycles without losing the selectivity.
ChemInform Abstract: Application of Novel Enantiopure Hydroxymethyl‐Substituted Pyridine Derivatives in Asymmetric Catalysis.
Authors: Eidamshaus Christian , Reissig Hans‐Ulrich 
Published: March 2012

AbstractSeveral hydroxymethyl‐substituted chiral pyridines are tested as catalysts in the asymmetric alkylation of aldehydes with ZnEt2.
ChemInform Abstract: Rhodium‐Catalyzed Reaction of 1‐Alkenylboronates with Aldehydes Leading to Allylation Products.
Authors: Shimizu Hiroshi , Igarashi Tomohiro , Miura Tomoya , Murakami Masahiro 
Published: March 2012

AbstractAlkenylboronates are used as allylating agents in the reaction with aldehydes in the presence of a cationic rhodium(I)/dppm catalyst to give anti‐configured homoallylic alcohols with high diastereoselectivity.
ChemInform Abstract: Reaction of 2,2‐Dinitromalononitrile with Arylalkenes.
Authors: Pak I. G. , Tyrkov A. G. 
Published: March 2012

AbstractReactions of title compound (I) with arylalkenes (II), (IV), and (VI) proceed with high selectivity and lead to the formation of previously unknown tetrahydro‐isoxazoles (III), nitromalonitriles (V) and conjugated nitroalkenes (VII).
ChemInform Abstract: Condensation of Propargylic Alcohols with 1,3‐Dicarbonyl Compounds and 4‐Hydroxycoumarins in Ionic Liquids (ILs).
Authors: Aridoss Gopalakrishnan , Laali Kenneth K. 
Published: March 2012

AbstractThe Bi(NO3)3·H2O/[bmim]PF6 system is found to be most efficient for these reactions.
ChemInform Abstract: Phosphate Ligands in the Gold(I)‐Catalyzed Activation of Enynes.
Authors: Raducan Mihai , Moreno Maria , Bour Christophe , Echavarren Antonio M. 
Published: March 2012

AbstractNeutral gold(I)‐phosphate complexes (I) are synthesized from the corresponding silver precursors and evaluated for their catalytic potential in the activation of alkyne substrates.
ChemInform Abstract: Microwave‐Assisted Organocatalytic Enantioselective Intramolecular Aza‐Michael Reaction with α,β‐Unsaturated Ketones.
Authors: Fustero Santos , del Pozo Carlos , Mulet Cristina , Lazaro Ruben , Sanchez‐Rosello Maria 
Published: March 2012

AbstractThe combination of an epi‐hydroquinine catalyst and pentafluoropropionic acid accelerates the process.
ChemInform Abstract: Alloxazine—Cyclodextrin Conjugates for Organocatalytic Enantioselective Sulfoxidations.
Authors: Mojr Viktor , Budesinsky Milos , Cibulka Radek , Kraus Tomas 
Published: March 2012

AbstractStructurally different alloxazine‐cyclodextrin conjugates, such as (I) and (II) are prepared and tested as catalysts for the enantioselective oxidation of prochiral sulfides (III) and (V).
ChemInform Abstract: A Reusable Polymer‐Supported Copper Catalyst for the C—N and C—O Bond Cross‐Coupling Reaction of Aryl Halides as well as Arylboronic Acids.
Authors: Islam Sk. Manirul , Mondal Sanchita , Mondal Paramita , Roy Anupam Singha , Tuhina K. , Salam Noor , Mobarak Manir 
Published: March 2012

AbstractThe O‐arylation of phenols with aryl halides, the N‐arylation of N—H heterocycles with arylboronic acids, and the amination of primary amines with aryl boronic acids or aryl iodides are efficiently promoted by copper complex (I).
ChemInform Abstract: Allylsilanes in “Tin‐Free” Oximation, Alkenylation, and Allylation of Alkyl Halides.
Authors: Rouquet Guy , Robert Frederic , Mereau Raphael , Castet Frederic , Landais Yannick 
Published: March 2012

AbstractA new “tin‐free” method for oximation, vinylation, and allylation of alkyl halides yields diverse oximes and olefins.
ChemInform Abstract: Metal‐Polymer Hybrid Material as a Catalyst for the Heck Coupling Reaction under Phosphine‐Free Conditions.
Authors: Islam Rafique Ul , Witcomb Michael J. , Scurrell Michael S. , van Otterlo Willem , van der Lingen Elma , Mallick Kaushik 
Published: March 2012

AbstractA palladium poly(aminophenol) composite is developed which shows excellent catalytic activity in Heck coupling reactions.
ChemInform Abstract: Powerful Amide Synthesis from Alcohols and Amines under Aerobic Conditions Catalyzed by Gold or Gold/Iron, ‐Nickel or ‐Cobalt Nanoparticles.
Authors: Soule Jean‐Francois , Miyamura Hiroyuki , Kobayashi Shu 
Published: March 2012

AbstractIt allows an efficient access to a wide range of amides.
ChemInform Abstract: Fast and Efficient Solvent‐Free Passerini Reaction.
Authors: Bousquet Till , Jida Mouhamad , Soueidan Mohamad , Depez‐Poulain Rebecca , Agbossou‐Niedercorn Francine , Pelinski Lydie 
Published: March 2012

AbstractConditions are developed for the multicomponent reaction, which represent an efficient alternative to microwave procedures.
ChemInform Abstract: Palladium‐Catalyzed Asymmetric Alkylation in the Synthesis of Cyclopentanoid and Cycloheptanoid Core Structures Bearing All‐Carbon Quaternary Stereocenters.
Authors: Hong Allen Y. , Bennett Nathan B. , Krout Michael R. , Jensen Thomas , Harned Andrew M. , Stoltz Brian M. 
Published: March 2012

AbstractThe key transformation is the palladium‐catalyzed asymmetric decarboxylative alkylation of seven‐membered β‐ketoesters (I) to form quaternary vinylogous esters (II).
ChemInform Abstract: A New Approach to the Synthesis of Aliphatic Triamines and Diamino Alcohols that Are Analogues of the anti‐TB Drug Ethambutol.
Authors: Kochetkov K. A. , Tavtorkin A. N. , Vorozhtsov N. I. , Sviridova L. A. , Moroz A. M. , Dorozhkova I. R. 
Published: March 2012

AbstractReductive cleavage of the endocyclic N‐N bond in appropriate functionalized pyrazolidines and pyrazolines under the action of a diborane complex yields the target linear triamines or diamino alcohols.
ChemInform Abstract: Synthesis, Characterization, X‐Ray Structural Analysis, and Iodination Ability of Benzyl(triphenyl)phosphonium Dichloroiodate.
Authors: Imanieh Hossein , Ghammamy Shahriar , Nikje Mir Mohammad Alavi , Hosseini Farhang , Aghbolagh Zahra Shokri , Fun Hoong‐Kun , Khavasi Hamid Reza , Kia Reza 
Published: March 2012

AbstractThe reagent is easily synthesized in a nearly quantitative yield by the addition of Bn‐PPh3+Cl‐ to a CH2Cl2 solution of ICl.
ChemInform Abstract: Chiral Dihydrobenzo[1,4]oxazines as Catalysts for the Asymmetric Transfer‐Hydrogenation of α,β‐Unsaturated Aldehydes.
Authors: Ebner Christian , Pfaltz Andreas 
Published: March 2012

AbstractA new class of organocatalysts based on 2,3‐dihydrobenzo[1,4]oxazine is prepared and applied in the enantioselective hydrogenation of α,β‐unsaturated aldehydes (I) giving the corresponding saturated aldehydes bearing a stereogenic center with two different aryl groups with high enantioselectivities.
ChemInform Abstract: Enol Ethers and Acetals: Acylation with Dichloroacetyl, Acetyl and Benzoyl Chloride in Ionic Liquid Medium.
Authors: Guarda Emerson A. , Marzari Mara R. B. , Frizzo Clarissa P. , Guarda Patricia M. , Zanatta Nilo , Bonacorso Helio G. , Martins Marcos A. P. 
Published: March 2012

AbstractMethods to prepare β‐alkoxyvinylketones in a short time are developed.
ChemInform Abstract: Organocatalytic Asymmetric Michael‐Type Reaction Between β,γ‐Unsaturated α‐Keto Ester and α‐Nitro Ketone.
Authors: Li Pengfei , Chan Sau Hing , Chan Albert S. C. , Kwong Fuk Yee 
Published: March 2012

AbstractMichael‐type reaction of title α‐keto esters (I) and (IV) with α‐nitro ketones (II) and (V), resp., proceeds smoothly in the presence of a quinine‐derived thiourea organocatalyst to give α,β‐unsaturated α‐acyloxy‐δ‐nitro esters in up to 96% optical purity.
ChemInform Abstract: InBr3‐Catalyzed Three‐Component Reactions of an Aryldiazoacetate, an Alcohol, and a Carbonyl Compound.
Authors: Ji Jingjing , Zhang Xia , Jiang Liqing , Hu Wenhao 
Published: March 2012

AbstractInBr3 promotes the decomposition of the diazo compound to generate an oxonium ylide intermediate.
ChemInform Abstract: 3‐Methoxalylchromones — Versatile Reagents for the Regioselective Synthesis of Functionalized 2,4′‐Dihydroxybenzophenones, Potential UV‐Filters.
Authors: Iaroshenko Viktor O. , Bunescu Alina , Spannenberg Anke , Supe Linda , Milyutina Maria , Langer Peter 
Published: March 2012

AbstractTreatment of bis‐silyl enol ethers (II) with chromones (I) affords a variety of functionalized dihydroxybenzophenones (III).
ChemInform Abstract: Convenient Synthesis of Diarylpropargyl Alcohols.
Authors: Shirinian Valerii Z. , Shimkin Aleksei A. , Mailyan Artur K. , Leonova Evgeniya S. , Krayushkin Mikhail M. 
Published: March 2012

AbstractThe reaction is reversible by treatment of title compounds (III) with sodium hydride in HMPA.
ChemInform Abstract: PtI2‐Catalyzed Tandem 3,3‐Rearrangement/Nazarov Reaction of Arylpropargylic Esters: Synthesis of Indanone Derivatives.
Authors: Zheng Huaiji , Xie Xingang , Yang Juan , Zhao Changgui , Jing Peng , Fang Bowen , She Xuegong 
Published: March 2012

AbstractFor unsymmetrical derivatives, the cyclization proceeds regioselectively at the less hindered position [cf.
ChemInform Abstract: Strategic Applications of Baylis—Hillman Adducts to General Syntheses of 3‐Nitroazetidines.
Authors: Rai Ankita , Yadav Lal Dhar S. 
Published: March 2012

AbstractBase‐promoted reaction of Baylis—Hillman alcohols (II) with phosphoramidates (I) provides access to 2‐aryl‐3‐nitroazetidines (III) as single trans‐diastereomers.