bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Highly Efficient One‐Pot Synthesis of Trisubstituted Imidazoles under Catalyst‐Free Conditions.
Authors: Azizi Najmadin , Dado Nairreh , Amiri Alireza Khajeh 
Published: June 2012

AbstractThis is the first report for a catalyst‐free and very mild synthesis of imidazoles, which are generated from readily available starting materials in a facile and atom economical three‐component procedure.
ChemInform Abstract: Construction of Adjacent Spiroquaternary and Tertiary Stereocenters Through Phosphine‐Catalyzed Asymmetric [3 + 2] Annulation of Allenoates with Alkylidene Azlactones.
Authors: Wang De , Wei Yin , Shi Min 
Published: June 2012

AbstractA novel axially chiral spiro‐phosphine‐catalyzed highly regio‐, diastereo‐ and enantioselective cycloaddition of azlactones (I) and allenic esters (II) is described.
ChemInform Abstract: Iodine‐Mediated Intramolecular Oxidative Cyclization of 2‐(Styrylthio)anilines: Synthesis of 2‐Substituted Benzothiazoles.
Authors: Zhao Dong‐Yun , Guo Xiao‐Kang , Li Jin‐Heng , Tang Ri‐Yuan 
Published: June 2012

AbstractThe novel metal‐free process affords the title compounds in moderate yields.
ChemInform Abstract: Synthesis and Anticancer Activity of 3,5‐Diaryl‐1,2,4‐oxadiazole Derivatives.
Authors: Kundu Mrityunjoy , Singh Jagadish , Singh Brijesh , Ghosh Tirtha , Maiti B. C. , Maity T. K. 
Published: June 2012

AbstractThe title compounds (III) are obtained by condensation of amidoximes with aromatic acid chlorides.They exhibit significant reduction of tumor cell count as well as tumor weight.
ChemInform Abstract: Chemistry of Halonitroethenes. Part 2. Trichloronitroethenes as a Building Block for the Novel Synthesis of 5‐Chloro(nitro)methyl‐Substituted 1‐Aryltetrazoles.
Authors: Zapol'skii Viktor A. , Yang Xuena , Namyslo Jan C. , Gjikaj Mimoza , Kaufmann Dieter E. 
Published: June 2012

AbstractA novel synthesis of title tetrazoles (VI) and their conversion to a variety of derivatives is described.
ChemInform Abstract: Formal [4 + 2] Cycloaddition of Di‐tert‐butyl 2‐Ethoxycyclobutane‐1,1‐dicarboxylate with Ketones or Aldehydes and Tandem Lactonization.
Authors: Okado Ryohei , Nowaki Aya , Matsuo Jun‐ichi , Ishibashi Hiroyuki 
Published: June 2012

AbstractSnCl4‐catalyzed formal [4 + 2] cycloaddition of the title cyclobutanedicarboxylate (I) with ketones or aldehydes affords dihydropyrandicarboxylates, whereas the Tms‐O‐Tf‐promoted reaction occurs via a tandem cycloaddition—lactonization mechanism furnishing dioxabicyclooctanecarboxylates.
ChemInform Abstract: Bifunctional Amino Squaramide Catalyzed Asymmetric Spiroannulation Cascades with Aliphatic β,γ‐Unsaturated α‐Keto Esters: Controlling an Aldehyde Enolate.
Authors: Wang Xiaoqin , Yao Weijun , Yao Zhihui , Ma Cheng 
Published: June 2012

AbstractThe use of squaramide BAS in the process renders possible the use of aliphatic and aromatic ester substrates to produce spirocyclic dihydropyrans or simple dihydrofurans with 3 continuous stereocenters.
ChemInform Abstract: Syntheses of Furo[3,4‐c]coumarins and Related Furyl Coumarin Derivatives via Intramolecular Wittig Reactions.
Authors: Jang Yeong‐Jiunn , Syu Siang‐en , Chen Yu‐Jhang , Yang Mei‐Chun , Lin Wenwei 
Published: June 2012

AbstractThe reaction of coumarins (I) with acid chlorides (II) in the presence of tributylphosphine gives rise to desired furo[3,4‐c]coumarins (III), whilst the analogous reaction of substrates (IV) and (VI) leads to furyl‐substituted coumarins (V) and (VII).
ChemInform Abstract: 1,3‐Dipolar Cycloadditions of Nonstabilized Azomethine Ylides at 3‐Substituted Coumarins: Synthesis of 1‐Benzopyrano[3,4‐c]pyrrolidines.
Authors: Moshkin Vladimir S. , Sosnovskikh Vyacheslav Ya. , Slepukhin Pavel A. , Roeschenthaler Gerd‐Volker 
Published: June 2012

AbstractIn situ formed azomethine ylides undergo 1,3‐dipolar cycloaddition reactions to form title compounds of type (IV), (VI) or (VIII), regio‐ and stereoselectively.
ChemInform Abstract: Ammonium Chloride‐Catalyzed One‐Pot Synthesis of Tetrahydrobenzo[α]xanthen‐11‐one Derivatives under Solvent‐Free Conditions.
Authors: Foroughifar Naser , Mobinikhaledi Akbar , Moghanian Hassan , Mozafari Reza , Esfahani Hamid R. M. 
Published: June 2012

AbstractOptimum reaction conditions are examined for the three‐component condensation of aldehydes, β‐naphthols and dimedone affording title compounds of type (IV).
ChemInform Abstract: Copper‐Catalyzed Thiolation Cyclization of 1‐Chloro‐1,5‐enynes with Sodium Hydrosulfide: Synthesis of CF3‐Containing 1H‐Isothiochromenes.
Authors: Shi Shuai , Sun Lei‐Lei , Liao Zhi‐Yong , Zhang Xing‐Guo 
Published: June 2012

AbstractA regio‐ and stereoselective synthesis of the title compounds is achieved by Cu(I)‐catalyzed tandem thiolation and 6‐exo‐dig heterocyclization with NaHS.
ChemInform Abstract: A General Solution for the 2‐Pyridyl Problem.
Authors: Dick Graham R. , Woerly Eric M. , Burke Martin D. 
Published: June 2012

AbstractThe cross‐coupling of air‐stable 2‐pyridyl MIDA boronates with a variety of aryl halides and triflates under conditions A) is highly efficient for the preparation of various functionalized pyridine derivatives bearing aryl substituents at position 2.
ChemInform Abstract: Reaction of Alkyl Isocyanides, Dialkyl Acetylenedicarboxylates with 4‐Hydroxy Quinoline: Synthesis of 1‐Azabuta‐1,3‐dienes.
Authors: Mohtat Bita , Rezazadeh Somayeh , Matinfar Mahnaz , Arabzadeh Vale , Djahaniani Hoorieh , Hossaini Zinatossadat 
Published: June 2012

AbstractThe reaction proceeds under neutral conditions without the need for catalyst or promoter.
ChemInform Abstract: Camphorsulfonic Acid Catalyzed Facile Tandem Double Friedlaender Annulation Protocol for the Synthesis of Phenoxy Linked Bisquinoline Derivatives and Discovery of Antitubercular Agents.
Authors: Paul Nidhin , Murugavel Muthuchamy , Muthusubramanian Shanmugam , Sriram Dharmarajan 
Published: June 2012

AbstractA series of phenoxy linked bisquinoline derivatives (III) are synthesized using a CSA‐catalyzed tandem Friedlander annulation.
ChemInform Abstract: Molybdenum Trioxide Catalyzed Oxidative Cross‐Dehydrogenative Coupling of Benzylic sp3 C—H Bonds: Synthesis of α‐Aminophosphonates under Aerobic Conditions.
Authors: Alagiri Kaliyamoorthy , Devadig Pradeep , Prabhu Kandikere R. 
Published: June 2012

AbstractEfficient α‐phosphonation of N‐aryl tetrahydroisoquinoline derivatives is achieved with elemental oxygen as the terminal oxidant.
ChemInform Abstract: Synthesis of 5,6‐Dihydrophenanthridine (DHPA) Sulfonamides and Subsequent Acid‐Catalyzed Rearrangement to Diaryl Sulfones.
Authors: Meseroll Lisa Marie Neuls , McKee James R. , Zanger Murray 
Published: June 2012

AbstractThe rearrangement of novel sulfonamides (I) under acidic conditions leads to diaryl sulfones, e.g. (II).
ChemInform Abstract: Multicomponent Approaches to 8‐Carboxylnaphthyl‐Functionalized Pyrazolo[3,4‐b]pyridine Derivatives.
Authors: Hao Yan , Xu Xiao‐Ping , Chen Tao , Zhao Li‐Li , Ji Shun‐Jun 
Published: June 2012

AbstractA novel and efficient approach to the title pyrazolopyridine derivatives such as (IV), (VI), (VIII) is developed using a one‐pot, three‐component reaction involving acenaphthylenedione (II) and aminopyrazoles (III).
ChemInform Abstract: Microwave‐Assisted Synthesis of Indolo[2,3‐b]dibenzo[b,g][1,8]naphthyridines.
Authors: Yamuna Ezhumalai , Zeller Matthias , Prasad Karnam Jayarampillai Rajendra 
Published: June 2012

AbstractA simple condensation of aminocarbazole (I) with 2‐chloro‐3‐formylquinolines allows the preparation of the synthetically and biologically important N‐heterocyclic skeleton (III).
ChemInform Abstract: Palladium‐ and Copper‐Cocatalyzed Tandem N—H/C—H Bond Functionalization: Synthesis of CF3‐Containing Indolo‐ and Pyrrolo[2,1‐a]isoquinolines
Authors: Sun Lei‐Lei , Liao Zhi‐Yong , Tang Ri‐Yuan , Deng Chen‐Liang , Zhang Xing‐Guo 
Published: June 2012

Abstracta new and efficient approach to biologically important title compounds
ChemInform Abstract: 4‐Phenoxypiperidine Pyridazin‐3‐one Histamine H3 Receptor Inverse Agonists Demonstrating Potent and Robust Wake Promoting Activity.
Authors: Hudkins Robert L. , et al. et al. 
Published: June 2012

AbstractA variety of piperidinyloxy(het)arylpyridazinones (VI), (VII) and (VIII) is prepared and tested for their hERG and DAT selectivity.
ChemInform Abstract: Synthesis and Antihypertensive Activity of Pyrimidin‐4(3H)‐one Derivatives as Losartan Analogue for New Angiotensin II Receptor Type 1 (AT1) Antagonists.
Authors: Kim Tae Woo , Yoo Byoung Wook , Lee Joon Kwang , Kim Ji Han , Lee Kyung‐Tae , Chi Yong Ha , Lee Jae Yeol 
Published: June 2012

AbstractA series of losartan‐like pyrimidin‐4(3H)‐one derivatives (I) are synthesized and evaluated as a novel class of AT1 receptor antagonists.
ChemInform Abstract: Synthesis of 2,4‐Diaminoquinazolines and Tricyclic Quinazolines by Cascade Reductive Cyclization of Methyl N‐Cyano‐2‐nitrobenzimidates.
Authors: Yin Ping , Liu Nan , Deng Yu‐Xing , Chen Yue , Deng Yong , He Ling 
Published: June 2012

AbstractThe method allows an efficient access to 2,4‐diaminoquinazolines and tricyclic qinazolines.
ChemInform Abstract: Terminal Alkynes as Keto‐Methyl Equivalent Toward One Pot Synthesis of 1,5‐Benzodiazepine Derivatives under Catalysis of Hg(OTf)2.
Authors: Maiti Gourhari , Kayal Utpal , Karmakar Rajiv , Bhattacharya Rudraksha N. 
Published: June 2012

AbstractAn efficient reaction of o‐phenylenediamines with terminal acetylenes is achieved under mild conditions to give benzodiazepinones (III) in moderate to good yields.
ChemInform Abstract: Advances in Drug Design and Discovery. Part 14. In vitro and in vivo Antifilarial Activity Evaluation of 3,6‐Epoxy [1,5]Dioxocines: A New Class of Antifilarial Agents.
Authors: Sashidhara Koneni V. , Kumar Abdhesh , Rao K. Bhaskara , Kushwaha Vikas , Saxena Kirti , Murthy P. K. 
Published: June 2012

AbstractA series of 3,6‐epoxy[1,5]dioxocines, e.g. (III), are synthesized and evaluated for their antifilarial activity against adult parasites of human lymphatic filarial parasite Brugia malayi.
ChemInform Abstract: Synthesis of Fused Dihydropyrano(furano)pyridines via [4 + 2]‐Cycloaddition of 5‐Alkenoxy Substituted Oxazoles.
Authors: Goodman Steven N. , Mans Douglas M. , Sisko Joseph , Yin Hao 
Published: June 2012

AbstractThe reaction proceeds best in the presence of Tf2O and pyridine.
ChemInform Abstract: Ni‐ and Pd‐Catalyzed Synthesis of Substituted and Functionalized Allylic Boronates.
Authors: Zhang Ping , Roundtree Ian A. , Morken James P. 
Published: June 2012

AbstractDifferent commercially available Pd catalysts can be used in the borylation process to afford the boron compounds with excellent or exclusive (E) or (Z) selectivity.
ChemInform Abstract: 1,1‐Carboboration Route to Substituted Naphthalenes.
Authors: Liedtke Rene , Harhausen Marcel , Froehlich Roland , Kehr Gerald , Erker Gerhard 
Published: June 2012

AbstractSubstituted bis(alkynyl)benzenes react with strongly electrophilic boranes, bearing C6F5 groups to afford densely substituted boryl‐naphthalene derivatives.
ChemInform Abstract: P—C Cross‐Coupling onto Enamides: Versatile Synthesis of α‐Enamido Phosphane Derivatives.
Authors: Cieslikiewicz Monika , Bouet Alexis , Juge Sylvain , Toffano Martial , Bayardon Jerome , West Caroline , Lewinski Krzystof , Gillaizeau Isabelle 
Published: June 2012

AbstractSecondary phosphane—borane derivatives and phosphane oxide (VI) react with α‐amido enol phosphate reagents to afford new chiral or achiral tertiary α‐enamido phosphane derivatives.
ChemInform Abstract: The Asymmetric Synthesis of Chiral Cyclic α‐Hydroxy Phosphonates and Quaternary Cyclic α‐Hydroxy Phosphonates.
Authors: Wang Chubei , Xu Chao , Tan Xiaosong , Peng Hao , He Hongwu 
Published: June 2012

AbstractA dialuminum complex derived in situ from chiral tridentate Schiff Base TSB in combination with silver carbonate catalyzes the addition of cyclic phosphite (II) to aldehydes or ketones to give the title phosphonates with up to 99% enantioselectivity.
ChemInform Abstract: Synthesis of a Novel Class of Steroidal Tetrazolo[1,5‐a]pyridines via Intramolecular 1,3‐Dipolar Cycloadditions.
Authors: Gogoi Junali , Bezbaruah Pranjal , Saikia Pallabi , Goswami Jonalee , Gogoi Pranjal , Boruah Romesh Chandra 
Published: June 2012

AbstractA 1,3‐dipolar cycloaddition of sodium azide with dinitrile precursors is followed by intramolecular cyclization.
ChemInform Abstract: Simple Conversion of Fully Protected Amino Acids to Zwitterions.
Authors: Hao Junliang , Reinhard Matt , Henry Steven S. , Seest Eric P. , Belvo Matthew D. , Monn James A. 
Published: June 2012

AbstractAn operationally simple method is presented for the conversion of fully protected amino acids to completely unprotected parent compounds including the mixed mGlu2 agonist/mGlu3 antagonist (IV).
ChemInform Abstract: Hyaluronidase Inhibitors from Keiskea japonica.
Authors: Murata Toshihiro , Miyase Toshio , Yoshizaki Fumihiko 
Published: June 2012

AbstractNine new compounds, shimobashiric acid A (I), C (IIa), D (IIb), shimobashiraside A (IIIa), B (IIIb), C (IV), D (V), E (VI) and F (VII), are isolated together with 20 known compounds.
Reduction of Energy Demand for Industrial Dedusting Plants
Authors: Klein Gunnar‐Marcel , Schrooten Theo , Neuhaus Tim 
Published: June 2012

AbstractDie Förderung gasförmiger Prozess‐ und Abluft‐Ströme, und damit verbunden der Druckverlust der Entstaubungsanlage, verursacht einen Großteil des elektrischen Energieverbrauchs industrieller Anlagen. Die Reduzierung des Druckverlustes der Entstaubungsanlagen ist hierbei der Schlüssel zur Erhöhung der Energieeffizienz. Die vorgestellten experimentellen Ergebnisse ermöglichen den wissensbasierten Einsatz von Filterschläuchen bis zu 12 m Länge. Zusammen mit geeigneter Injektortechnik und neu entwickelten Filtermedien kann der Energiebedarf für die Entstaubung um über 40 % gesenkt werden. Das vorgestellte Filter‐Expertensystem gestattet die schnelle Identifikation von Energie‐ und Betriebskostensenkungen für neue und bestehende Filteranlagen.
p16INK4a immunocytochemistry versus human papillomavirus testing for triage of women with minor cytologic abnormalities
Authors: Roelens Jolien , Reuschenbach Miriam , von Knebel Doeberitz Magnus , Wentzensen Nicolas , Bergeron Christine , Arbyn Marc 
Published: June 2012

AbstractThe best method for identifying women who have minor cervical lesions that require diagnostic workup remains unclear. The authors of this report performed a meta‐analysis to assess the accuracy of cyclin‐dependent kinase inhibitor 2A (p16INK4a) immunocytochemistry compared with high‐risk human papillomavirus DNA testing with Hybrid Capture 2 (HC2) to detect grade 2 or greater cervical intraepithelial neoplasia (CIN2+) and CIN3+ among women who had cervical cytology indicating atypical squamous cells of undetermined significance (ASC‐US) or low‐grade cervical lesions (LSIL). A literature search was performed in 3 electronic databases to identify studies that were eligible for this meta‐analysis. Seventeen studies were included in the meta‐analysis. The pooled sensitivity of p16INK4a to detect CIN2+ was 83.2% (95% confidence interval [CI], 76.8%‐88.2%) and 83.8% (95% CI, 73.5%‐90.6%) in ASC‐US and LSIL cervical cytology, respectively, and the pooled specificities were 71% (95% CI, 65%‐76.4%) and 65.7% (95% CI, 54.2%‐75.6%), respectively. Eight studies provided both HC2 and p16INK4a triage data. p16INK4a and HC2 had similar sensitivity, and p16INK4a has significantly higher specificity in the triage of women with ASC‐US (relative sensitivity, 0.95 [95% CI, 0.89‐1.01]; relative specificity, 1.82 [95% CI, 1.57‐2.12]). In the triage of LSIL, p16INK4a had significantly lower sensitivity but higher specificity compared with HC2 (relative sensitivity, 0.87 [95% CI, 0.81‐0.94]; relative specificity, 2.74 [95% CI, 1.99‐3.76]). The published literature indicated the improved accuracy of p16INK4a compared with HC2 testing in the triage of women with ASC‐US. In LSIL triage, p16INK4a was more specific but less sensitive. Cancer (Cancer Cytopathol) 2012. © 2012 American Cancer Society.
Molecular characterization of the subnuclei in rat habenula
Authors: Aizawa Hidenori , Kobayashi Megumi , Tanaka Sayaka , Fukai Tomoki , Okamoto Hitoshi 
Published: June 2012

AbstractThe mammalian habenula is involved in regulating the activities of serotonergic and dopaminergic neurons. It consists of the medial and lateral habenulae, with each subregion having distinct neural connectivity. Despite the functional significance, manipulating neural activity in a subset of habenular pathways remains difficult because of the poor availability of molecular markers that delineate the subnuclear structures. Thus, we examined the molecular nature of neurons in the habenular subnuclei by analyzing the gene expressions of neurotransmitter markers. The results showed that different subregions of the medial habenula (MHb) use different combinations of neurotransmitter systems and could be categorized as either exclusively glutamatergic (superior part of MHb), both substance P‐ergic and glutamatergic (dorsal region of central part of MHb), or both cholinergic and glutamatergic (inferior part, ventral region of central part, and lateral part of MHb). The superior part of the MHb strongly expressed interleukin‐18 and was innervated by noradrenergic fibers. In contrast, the inferior part, ventral region of the central part, and lateral part of the MHb were peculiar in that acetylcholine and glutamate were cotransmitted from the axonal terminals. In contrast, neurons in the lateral habenula (LHb) were almost uniformly glutamatergic. Finally, the expressions of Htr2c and Drd2 seemed complementary in the medial LHb division, whereas they coincided in the lateral division, suggesting that the medial and lateral divisions of LHb show strong heterogeneity with respect to monoamine receptor expression. These analyses clarify molecular differences between subnuclei in the mammalian habenula that support their respective functional implications. J. Comp. Neurol. 520:4051–4066, 2012. © 2012 Wiley Periodicals, Inc.
Infinitely Many Positive Solutions to Some Scalar Field Equations with Nonsymmetric Coefficients
Authors: Cerami Giovanna , Passaseo Donato , Solimini Sergio 
Published: June 2012

AbstractIn this paper the equation $\font\open=msbm10 at 10pt\def\R{\hbox{\open R}} - \Delta u + a(x)u = |u|^{p - 1} u\;{\rm in }\;{\R}^N $ is considered, when N ≥ 2, p > 1, and $p < {{N + 2} \over {N - 2}}$ if N ≥ 3. Assuming that the potential a(x) is a positive function belonging to $\font\open=msbm10 at 10pt\def\R{\hbox{\open R}}L_{{\rm loc}}^{N/2} ({\R}^N )$ such that a(x) → a∞ > 0 as |x|→∞ and satisfies slow decay assumptions but does not need to fulfill any symmetry property, the existence of infinitely many positive solutions, by purely variational methods, is proved. The shape of the solutions is described as is, and furthermore, their asymptotic behavior when $\font\open=msbm10 at 10pt\def\R{\hbox{\open R}}|a(x) - a_\infty |_{L_{{\rm loc}}^{N/2} ({\R}^N )} \to 0$. © 2012 Wiley Periodicals, Inc.
Performance metrics and auditing framework using application kernels for high‐performance computer systems
Authors: Furlani Thomas R. , Jones Matthew D. , Gallo Steven M. , Bruno Andrew E. , Lu Charng‐Da , Ghadersohi Amin , Gentner Ryan J. , Patra Abani , DeLeon Robert L. , von Laszewski Gregor , Wang Fugang , Zimmerman Ann 
Published: June 2012

SUMMARYThis paper describes XSEDE Metrics on Demand, a comprehensive auditing framework for use by high‐performance computing centers, which provides metrics regarding resource utilization, resource performance, and impact on scholarship and research. This role‐based framework is designed to meet the following objectives: (1) provide the user community with a tool to manage their allocations and optimize their resource utilization; (2) provide operational staff with the ability to monitor and tune resource performance; (3) provide management with a tool to monitor utilization, user base, and performance of resources; and (4) provide metrics to help measure scientific impact. Although initially focused on the XSEDE program, XSEDE Metrics on Demand can be adapted to any high‐performance computing environment. The framework includes a computationally lightweight application kernel auditing system that utilizes performance kernels to measure overall system performance. This allows continuous resource auditing to measure all aspects of system performance including filesystem performance, processor and memory performance, and network latency and bandwidth. Metrics that focus on scientific impact, such as publications, citations and external funding, will be included to help quantify the important role high‐performance computing centers play in advancing research and scholarship. Copyright © 2012 John Wiley & Sons, Ltd.
Surface‐Anchored MOF‐Based Photonic Antennae
Authors: Streit Huayna Cerqueira , Adlung Matthias , Shekhah Osama , Stammer Xia , Arslan Hasan Kemal , Zybaylo Olexandra , Ladnorg Tatjana , Gliemann Hartmut , Franzreb Matthias , Wöll Christof , Wickleder Claudia 
Published: June 2012

AbstractThe loading of a metal‐organic framework (MOF), [Cu3(btc)2xH2O] HKUST‐1, with europium β‐diketonate complexes is studied with the goal to using the porous molecular framework as a photonic antenna. Whereas loading of HKUST‐1 powder particles produced via the conventional solvothermal synthesis method was strongly hindered, for HKUST‐1 SURMOFs, thin MOF films fabricated using the liquid phase epitaxy method, a high filling factor can be achieved. The optical properties of the HKUST‐1‐MOFs before and after loading were analysed with the aid of luminescence spectroscopy. Careful analysis of the absorption spectra reveals the presence of an effective energy transfer between the HKUST‐1 framework and the Eu3+ centers.
Trapping Molecular SnBr2(OH)2 by Tin Alkoxide Coordination: Syntheses and Molecular Structures of [MeN(CH2CMe2O)2SnBr2]2·SnBr2(OH)2 and RN(CH2CMe2O)2SnL [R = Me, n‐Octyl; L = Lone Pair, Cr(CO)5, W(CO)5, Fe(CO)4, Br2]
Authors: Iovkova‐Berends Ljuba , Berends Thorsten , Zöller Thomas , Schollmeyer Dieter , Bradtmöller Gerrit , Jurkschat Klaus 
Published: June 2012

AbstractThe synthesis of the intramolecularly coordinated stannylenes and their transition‐metal complexes of the type RN(CH2CMe2O)2SnL [1: L = lone pair, R = Me; 2: L = lone pair, R = n‐octyl; 5: L =W(CO)5, R = Me; 6: L = Cr(CO)5, R = Me; 7: L =W(CO)5, R = n‐octyl; 8: L = Fe(CO)4, R = Me], and of the tin(IV) compounds RN(CH2CMe2O)2SnBr2 (9: R = Me), [MeN(CH2CMe2O)2SnBr2]2·SnBr2(OH)2 (10) and spiro‐[RN(CH2CMe2O)2]2Sn (3: R = Me; 4: R = n‐octyl) is reported. The compounds were characterized by elemental analyses, 1H, 13C, 119Sn, and 119Sn magic‐angle spinning (5, 6) NMR spectroscopy, electrospray mass spectrometry, and single‐crystal X‐ray diffraction analysis.
Chirality‐Driven Metallo‐Copolymer Formation
Authors: Torres Maria , Heinrich Benoit , Miqueu Karinne , Bellemin‐Laponnaz Stéphane 
Published: June 2012

AbstractThe combination of two heterochiral bisoxazoline ligands at one metal centre has been successfully used to generate coordination copolymers. The addition of a Zn metal ion to a monomer that has enantiopure C2‐symmetric bisoxazoline units placed at either end does not favour the formation of self‐aggregates. On the other hand, the use of a racemic mixture of the same ligand leads to the formation of a metallopolymeric assembly.