bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Iron‐Catalyzed Cross‐Coupling of Alkenyl Acetates.
Authors: Gaertner Dominik , Stein Andre Luiz , Grupe Sabine , Arp Johannes , Jacobi von Wangelin Axel 
Published: January 2016

AbstractThe mild and ligand‐free title reaction of cyclic and acyclic mono‐, di‐ and, trisubstituted alkenes with alkyl and arylmagnesium halides has a very broad substrate scope and tolerates a diverse range of functional groups.
ChemInform Abstract: Diversity‐Oriented Synthesis of Tetrathia[8]circulenes by Sequential C—H Borylation and Annulation.
Authors: Kato Shohei , Serizawa Yuma , Sakamaki Daisuke , Seki Shu , Miyake Yoshihiro , Shinokubo Hiroshi 
Published: January 2016

AbstractSynthesis of tetrathia[8]circulenes is achieved by sequential C—H borylation and annulation from cyclic tetrathiophene.
ChemInform Abstract: Copper‐Catalyzed Trifluoromethylation of Aliphatic N‐Arylhydrazones: A Concise Synthetic Entry to 2‐Trifluoromethylindoles from Simple Aldehydes.
Authors: Prieto Alexis , Landart Melissa , Baudoin Olivier , Monteiro Nuno , Bouyssi Didier 
Published: January 2016

AbstractThe trifluoromethylation employing Togni reagent proceeds efficiently for aliphatic aldehyde‐derived substrates bearing the N,N‐diphenylamino group (Ami) as the terminal hydrazone amino group.
ChemInform Abstract: An Efficient Synthesis of Styrenyl Enamides from 4‐Aryl‐2‐oxazolidinones in the Presence of Strong Base.
Authors: Zou Kaihe , Ye Jinxing , Wu Xin‐Yan 
Published: January 2016

AbstractStarting from 4‐aryl substituted 2‐oxazolidinones, 2‐thioxooxazolidines or 2‐thioxothiazolidines a convenient method for the preparation of various N‐acyl styrenyl enamides is developed.
ChemInform Abstract: 4‐Dodecylbenzenesulfonic Acid (DBSA) Promoted Solvent‐Free Diversity‐Oriented Synthesis of Primary Carbamates, S‐Thiocarbamates and Ureas.
Authors: Sardarian Ali Reza , Inaloo Iman Dindarloo 
Published: January 2016

AbstractA highly efficient and environmentally benign method for the synthesis of primary carbamates, S‐thiocarbamates, and ureas is introduced.
ChemInform Abstract: The Dual Role of 1,8‐Diazabicyclo[5.4.0]undec‐7‐ene (DBU) in the Synthesis of Terminal Aryl‐ and Styryl‐Acetylenes via Umpolung Reactivity.
Authors: Morri Ashok Kumar , Thummala Yadagiri , Doddi Venkata Ramana 
Published: January 2016

AbstractThe title synthesis proceeds via an elimination/umpolung/protonation sequence and doesn′t apply to the synthesis of alkyl‐acetylenes.
ChemInform Abstract: ortho‐Alkenylation of Anilines with Aromatic Terminal Alkynes over Nanosized Zeolite Beta.
Authors: Mameda Naresh , Peraka Swamy , Kodumuri Srujana , Chevella Durgaiah , Marri Mahender Reddy , Nama Narender 
Published: January 2016

AbstractArylacetylenes bearing a strong electron‐withdrawing group (e.g., ‐NO2, ‐CO‐O‐Me or ‐CF3 in para‐position) do not react.
ChemInform Abstract: A Facile and Selective Procedure for Oxidation of Hydroquinones Using Silica Gel Supported Catalytic Cerium(IV) Ammonium Nitrate.
Authors: Ali Mohammed Hashmat , Welker Andrea , York Crystal 
Published: January 2016

AbstractThe method is found to be selective towards the oxidation of hydroquinones in the presence of phenols or other oxygenated arenes.
ChemInform Abstract: Pd/C‐Catalyzed Facile Synthesis of Primary Aromatic Amides by Aminocarbonylation of Aryl Iodides Using Ammonia Surrogates.
Authors: Mane Rajendra S. , Bhanage Bhalchandra M. 
Published: January 2016

AbstractA simple and effective approach to primary amides (III) via phosphine‐ligand‐free Pd/C catalysis is presented.
ChemInform Abstract: Triarylphosphines as Aryl Donors for Pd(II)‐Catalyzed Aromatic Coupling of Oxabenzonorbornadienes.
Authors: Zhou Hui , Li Jixing , Yang Huameng , Xia Chungu , Jiang Gaoxi 
Published: January 2016

AbstractThe title reaction gives aryl substituted naphthalenes as products [e.g. (III)] and tolerates various functional groups.
ChemInform Abstract: Bu4NI‐Catalyzed Direct α‐Oxyacylation of Diarylethanones with Acyl Peroxides.
Authors: Zhou Zhou , Cheng Jiang , Yu Jin‐Tao 
Published: January 2016

AbstractThe title reaction is conducted under mild conditions without metal or amine catalysts leading to α‐oxyacylated diarylethanones such as (III) and (V) in moderate to good yields.
ChemInform Abstract: Selective Synthesis of 2,5‐Disubstituted Furan‐3‐carboxylates and the Isomeric 2,4‐Disubstituted Furan‐3‐carboxylates.
Authors: Chen Panpan , Meng Yinggao , Yang Qinghua , Wu Jie , Xiao Yuanyuan , Gorja Dhilli Rao , Song Chuanjun , Chang Junbiao 
Published: January 2016

Abstract2,5‐ or 2,4‐disubstituted furan‐3‐carboxylates are obtained depending on the treatment of 3‐substituted carboxylates with either Ag2CO3/DBU or Cs2CO3, resp.
ChemInform Abstract: Asymmetric Fluorolactonization with a Bifunctional Hydroxyl Carboxylate Catalyst.
Authors: Egami Hiromichi , Asada Junshi , Sato Kentaro , Hashizume Daisuke , Kawato Yuji , Hamashima Yoshitaka 
Published: January 2016

AbstractA highly enantioselective fluorolactonization of ortho‐vinylbenzoic acids with Selectfluor and a bifunctional phase‐transfer organocatalyst provides (fluoromethyl)isobenzofuranones.
ChemInform Abstract: Metal‐Free [3 + 2] Oxidative Coupling of Phenols with Alkenes: Synthesis of Dihydrobenzofurans.
Authors: Zhao Yating , Huang Binbin , Yang Chao , Li Bing , Xia Wujiong 
Published: January 2016

AbstractAn environmentally benign and metal‐free [3+2]‐cycloaddition of phenols and styrenes with sodium persulfate as an oxidant affords dihydrobenzofurans.
ChemInform Abstract: Synthesis of Tetrasubstituted Pyrroles from Homopropargylic Amines via a Sonogashira Coupling/Intramolecular Hydroamination/Oxidation Sequence
Authors: Wang Chan , Huang Kaimeng , Wang Junying , Wang Hongkai , Liu Lingyan , Chang Weixing , Li Jing 
Published: January 2016

Abstract26 examples
ChemInform Abstract: Synthesis of Heteroaryl‐Substituted Pyrroles via the 1,3‐Dipolar Cycloaddition of Unsymmetrical Muenchnones and Nitrovinylheterocycles.
Authors: Lopchuk Justin M. , Song Mia , Butler Blythe , Gribble Gordon W. 
Published: January 2016

Abstract1,3‐Dipolar cycloaddition of in situ generated muenchnones with appropriate β‐nitrovinyl hetaryls leads to 3‐furyl‐, 3‐thienyl‐, and 3‐pyrrolylpyrroles.
ChemInform Abstract: An Efficient Aldol‐Type Direct Reaction of Isatins with TMSCH2CN.
Authors: Bhaskara Rao V. U. , Kumar Krishna , Singh Ravi P. 
Published: January 2016

AbstractCsF catalyzed direct cyanomethylation of various isatins (I) and (IV) using TMSCH2CN (II) as nucleophile is developed.
ChemInform Abstract: The Synthetic Studies of Carbazole Alkaloids.
Authors: Yokoyama Hajime , Shoji Yuzen , Kubo Takayoshi , Miyazawa Masahiro , Hirai Yoshiro 
Published: January 2016

Abstract3,4‐Disubstituted, 3‐substituted, and 4‐substituted carbazoles, advanced intermediates in the synthesis of natural carbazole alkaloids, are regioselectively synthesized by Diels—Alder reactions of indolines with alkynes.
ChemInform Abstract: A General Approach Towards NH‐Pyrazoles that Bear Diverse Fluoroalkyl Groups by Means of Fluorinated Iminium Salts.
Authors: Schmitt Etienne , Landelle Gregory , Vors Jean‐Pierre , Lui Norbert , Pazenok Sergiy , Leroux Frederic R. 
Published: January 2016

AbstractThe presented method is extremely versatile, high yielding, and allows quick access to the title compounds which are otherwise difficult to prepare.
ChemInform Abstract: Regioselective Synthesis of Pyrazoles and Pyrazolo[1,5‐a]pyrimidines: Structural Characterization by HMBC NMR.
Authors: Al‐Bogami Abdullah S. , Saleh Tamer S. 
Published: January 2016

AbstractA rapid and efficient method for the regioselective synthesis of a new series of the title pyrazole (III) and pyrazolopyrimidine derivatives (V) via reaction of enamine (I) with hydrazines or 5‐aminopyrazoles, resp., under microwave irradiation conditions is developed.
ChemInform Abstract: Switchable Copper‐Catalyzed Cascade Synthesis of Thiazolidine‐2‐thiones and Thiazole‐2(3H)‐thiones.
Authors: Weng Jian‐Quan , Yue Bin‐Jie , Xu Meng , Yang Yu‐Kun , Jin Hong‐Wei 
Published: January 2016

AbstractThe title reactions of N‐(2‐bromoallyl)amines with carbon disulfide are achieved selectively by simple adjustment of the reaction temperature.
ChemInform Abstract: Efficient, Iron‐Catalyzed Synthesis of 2‐Mercaptobenzothiazole Through S‐Arylation/Heterocyclization of 2‐Haloaniline with Potassium Xanthate.
Authors: Gao Min , Lou Chunqing , Zhu Ning , Qin Weijing , Suo Quanling , Han Limin , Hong Hailong 
Published: January 2016

AbstractA novel protocol for the synthesis of mercaptobenzothiazoles is presented that avoids conventionally used high pressure and harsh reaction conditions.
ChemInform Abstract: A Copper(II)—Thioamide Combination as a Robust Heterogeneous Catalytic System for Green Synthesis of 1,4‐Disubstituted‐1,2,3‐triazoles under Click Conditions.
Authors: Mirjafary Zohreh , Ahmadi Leila , Moradi Masomeh , Saeidian Hamid 
Published: January 2016

AbstractThe catalyst is recyclable and reusable at least 7 times with only a slight decrease in yield.
ChemInform Abstract: TMSBr/InBr3‐Promoted Prins Cyclization/Homobromination of Dienyl Alcohol with Aldehyde to Construct cis‐THP Containing an Exocyclic E‐Alkene.
Authors: Li Linjie , Sun Xianwei , He Yanyang , Gao Lu , Song Zhenlei 
Published: January 2016

AbstractThe Prins cyclization/homobromination of dienyl alcohols (I) with aldehydes (II) and (VI) leads to intermediate THP bromides, which react readily with 2,5‐dinitrobenzoic acid to afford cis‐THP esters mainly as E‐alkenes (IV) and (VII).
ChemInform Abstract: Cascade Synthesis of Spirooxindole δ‐Lactone Derivatives Through N‐Aryl Hydroxymethylacrylamides with Xanthates
Authors: Wang Shucheng , Huang Xuhu , Wen Yanzhao , Ge Zemei , Wang Xin , Li Runtao 
Published: January 2016

Abstractvia radical addition/cyclization and ester exchange
ChemInform Abstract: A New and Efficient ZnCl2‐Catalyzed Synthesis and Biological Evaluation of Novel 2‐Amino‐3,5‐dicyano‐4‐aryl‐6‐aryl‐aminopyridines as Potent Antibacterial Agents Against Helicobacter pylori (HP).
Authors: Huang Jijun , Zhou Jie , Song Senchuan , Song Huacan , Chen Zhiyong , Yi Wei 
Published: January 2016

AbstractThe cyclization of various benzylidenemalonitriles with arylamines provides the title products in high yields.
ChemInform Abstract: An Effective Two‐Step Synthesis, Fluorescent Properties, Antioxidant Activity and Cytotoxicity Evaluation of Benzene‐Fluorinated 2,2‐Dimethyl‐2,3‐dihydro‐1H‐quinolin‐4‐ones.
Authors: Politanskaya Larisa V. , Chuikov Igor P. , Tretyakov Evgeny V. , Shteingarts Vitalij D. , Ovchinnikova Ludmila P. , Zakharova Olga D. , Nevinsky Georgy A. 
Published: January 2016

AbstractThe title quinolinones are simply and effectively synthesized via Sonogashira reaction followed by cyclocondensation reaction of the corresponding o‐alkynylanilines.
ChemInform Abstract: Deformylative Intramolecular Hydroarylation: Synthesis of Benzo[e]pyrido[1,2‐a]indoles.
Authors: Jung Youngeun , Kim Ikyon 
Published: January 2016

AbstractThe title synthesis from indolizines bearing both formyl and aryl‐substituted alkyne groups [e.g. (I)] is realized under acid catalysis.
ChemInform Abstract: Sodium Perchlorate Catalyzed Synthesis of 2,4,6‐Trioxotetrahydropyrimidin‐5(2H)‐ylidene Derivatives as Antioxidant Agents.
Authors: Gireesh T. M. , Kamble Ravindra R. , Dorababu A. , Somagond Shilpa M. 
Published: January 2016

AbstractThe compounds (III) are easily formed from chalcones (I) appended to sydnone in the presence of sodium perchlorate as Lewis acid.
ChemInform Abstract: Lewis Acid Catalyzed Annulation of Nitrones with Oxiranes, Aziridines, and Thiiranes.
Authors: Pathipati Stalin R. , Singh Vipender , Eriksson Lars , Selander Nicklas 
Published: January 2016

AbstractThe annulation reactions proceeds in the presence of Al‐ or In‐catalysts under mild conditions to afford a wide variety of six‐membered heterocycles.
ChemInform Abstract: Aryne‐Mediated Arylation of the 3‐Benzazepine Scaffold: One‐Pot Synthesis of 1‐Aryl‐3‐methyl‐2,3,4,5‐tetrahydro‐1H‐3‐benzazepines.
Authors: Singh Kamal Nain , Singh Paramjit , Sharma Esha , Kaur Manjot , Deol Yadwinder Singh 
Published: January 2016

AbstractThe direct C‐1 arylation of benzazepines involves the nucleophilic addition of their β‐amino carbanions to in situ generated arynes.
ChemInform Abstract: Formation of C(sp2)—Boronate Esters by Borylative Cyclization of Alkynes Using BCl3.
Authors: Warner Andrew J. , Lawson James R. , Fasano Valerio , Ingleson Michael J. 
Published: January 2016

AbstractA wide range of substituted alkynes are converted to the corresponding polycyclic boronate esters by using BCl3 as an inexpensive electrophile.
ChemInform Abstract: Synthesis of Benzimidazole‐Substituted Arylboronic Acids via Aerobic Oxidation of 1,2‐Arylenediamines and Formyl‐Substituted Aryl MIDA Boronates Using Potassium Iodide as a Catalyst.
Authors: Lee Ye‐Sol , Cheon Cheol‐Hong 
Published: January 2016

AbstractA highly efficient new protocol for the synthesis of benzimidazole‐substituted arylboronic acids is presented via aerobic oxidative cyclization of aryldiamines and formyl‐substituted aryl MIDA (N‐methyliminodiacetic acid) boronates in the presence of potassium iodide as catalyst.
ChemInform Abstract: Reaction of Dilithio Reagents with PhSiH3: Formation of Siloles and 3‐Silacyclopentenes.
Authors: Wei Baosheng , Li Heng , Yin Jianhao , Zhang Wen‐Xiong , Xi Zhenfeng 
Published: January 2016

AbstractDepending on the solvent either siloles or silacyclopentenes are obtained.
ChemInform Abstract: Asymmetric Bromine—Lithium Exchange: Application Toward the Synthesis of New Biaryl‐Diphosphine Ligands.
Authors: Graff Julien , Lastawiecka Elzbieta , Guenee Laure , Leroux Frederic , Alexakis Alexandre 
Published: January 2016

AbstractTwelve novel chiral biphenyl‐diphosphine ligands, e.g. compounds (III), (V), and (VI), are prepared starting from the common precursor (I).
ChemInform Abstract: A Convenient Catalytic Procedure for Direct Synthesis of Arylselanyl Anilines.
Authors: Yu Chen , Shi Hongwei , Zhu Min , Yan Jie 
Published: January 2016

AbstractA novel process for the regioselective selanylation of the para‐position of anilines with diphenyl and dibenzyl diselenide under oxidizing conditions is presented.
ChemInform Abstract: Nematicidal Triterpenoids from Lantana camara.
Authors: Begum Sabira , Ayub Anjum , Shaheen Siddiqui Bina , Fayyaz Shahina , Kazi Firoza 
Published: January 2016

Abstractisolation, structure and nematicidal activities of the new triterpene, lancamarolide (I), and seven known triterpenes
ChemInform Abstract: Involucratustones A—C: Unprecedented Sesquiterpene Dimers Containing Multiple Contiguous Quaternary Carbons from Stahlianthus involucratus.
Authors: Li Qiang‐Ming , Luo Jian‐Guang , Zhang Yang‐Mei , Li Zhong‐Rui , Wang Xiao‐Bing , Yang Ming‐Hua , Luo Jun , Sun Hong‐Bin , Chen Yi‐Jun , Kong Ling‐Yi 
Published: January 2016

AbstractIsolation, structure elucidation, possible biosynthesis, and biological activities of the three new cadinane dimers (I)—(III) are described.
ChemInform Abstract: Direct One‐Pot Synthesis of Nucleosides from Unprotected or 5‐O‐Monoprotected D‐Ribose.
Authors: Downey A. Michael , Richter Celin , Pohl Radek , Mahrwald Rainer , Hocek Michal 
Published: January 2016

AbstractThe unprotected D‐ribose (I) reacts with nucleobases [e.g. (II)] to give β‐pyranosyl nucleosides [e.g. (III)] as the major products and β‐furanosides [e.g. (IV)] as the minor products.
ChemInform Abstract: Penchinones A—D, Two Pairs of cis‐trans Isomers with Rearranged Neolignane Carbon Skeletons from Penthorum chinense.
Authors: He Ya‐Cong , Peng Cheng , Xie Xiao‐Fang , Chen Ming‐Hua , Li Xiao‐Nian , Li Meng‐Ting , Zhou Qin‐Mei , Guo Li , Xiong Liang 
Published: January 2016

AbstractPenchinone A (Ia) shows protective activity against acetaminophen‐induced damage to the HL7702 hepatocyte (MTT assay) with a survival rate up to 91% for a dose of 10 μM.
ChemInform Abstract: Flavones from the Leaves of Yunnan Local Sun Cured Tobacco and Their Cytotoxicity.
Authors: Wu Yu‐Ping , Kong Guang‐Hui , Li Wei , Xiang Neng‐Jun , Liu Li‐Xuang , Yang Guo‐Rong , Lu Xiu‐Ping , Liu Qiang 
Published: January 2016

AbstractTwo new flavones (I) are isolated from the leaves of the title species along with four known flavones.
ChemInform Abstract: An Element Through the Looking Glass: Exploring the Au‐C, Au‐H and Au‐O Energy Landscape
Authors: Rosca Dragos‐Adrian , Wright Joseph A. , Bochmann Manfred 
Published: January 2016

AbstractReview: emphasis on recently discovered gold(III) complexes with bonds to hydrogen, oxgen, alkenes and CO ligands; 206 refs.
ChemInform Abstract: The Versatile Ruthenium(II/III) Tetraazamacrocycle Complexes and Their Nitrosyl Derivatives
Authors: Doro Fabio Gorzoni , Ferreira Kleber Queiroz , da Rocha Zenis Novais , Caramori Giovanni Finoto , Gomes Anderson Jesus , Tfouni Elia 
Published: January 2016

AbstractReview: 249 refs.
ChemInform Abstract: Luminescent Copper(I) Complexes with Halogenido‐Bridged Dimeric Core
Authors: Tsuge Kiyoshi , Chishina Yuko , Hashiguchi Hanako , Sasaki Yoichi , Kato Masako , Ishizaka Shoji , Kitamura Noboru 
Published: January 2016

AbstractReview: 145 refs.
ChemInform Abstract: Redox Cycling in the Activation of Peroxides by Iron Porphyrin and Manganese Complexes. ′Catching′ Catalytic Active Intermediates
Authors: Oszajca Maria , Franke Alicja , Brindell Malgorzata , Stochel Grazyna , van Eldik Rudi 
Published: January 2016

AbstractReview: 261 refs.
ChemInform Abstract: Synthesis of Complexing Agents Derived from Ammonia and Ethylene Diamine and Containing Carboxyl and Secondary Amino Groups
Authors: Tsirul'nikova N. V. , Podmareva O. N. , Dernovaya E. S. , Fetisova T. S. , Rodin M. M. 
Published: January 2016

AbstractReview: 57 refs.
Synthesis of a Luminescent Azaphosphole
Authors: Wu Shanshan , Rheingold Arnold L. , Golen James A. , Grimm Alexandra B. , Protasiewicz John D. 
Published: January 2016

AbstractA carbazole‐based azaphosphole (compound 3) has been prepared by acid‐catalyzed dehydrocyclization of 1‐phosphino‐9H‐carbazole (2) with benzoyl chloride. Unlike other benzazaphospholes having σ2,λ3‐multiply bonded phosphorus atoms, compound 3 displays significant fluorescence in solution, as does primary phosphine 2. Compound 3, as well as the materials on route to its synthesis, were characterized by multinuclear NMR, UV/Vis, and fluorescence spectroscopy. The optical data of 2 and 3 are consistent with results of DFT and TDDFT [6‐311G+(d,p) CAMB3LYP] calculations. The computed structure of compound 3′ (R = Ph) is also consistent with the experimental X‐ray structural determination, which reveals a planar heterocyclic system and slight rotation of the p‐tolyl group out of plane with respect to the heterocyclic core.
A Push–Pull PdII Complex with a Ternary Pd–P–C+ Accepting End and a Key N‐Heterocyclic Carbene–Imid­azoliophosphine Ligand
Authors: Dubrulle Laurent , Poidevin Corentin , Maaliki Carine , Canac Yves , Lepetit Christine , Duhayon Carine , Chauvin Remi 
Published: January 2016

AbstractInvited for the cover of this issue is the group of Remi Chauvin from the Laboratoire de Chimie de Coordination, Toulouse, France. The cover image shows the polarization of a neutral PdII complex in three steps presented on three levels of the marine background.
Effect of Spinel Inversion on (CoxFe1−x)3O4 All‐Oxide Solar Cell Performance
Authors: Yan Zhi , Keller David A. , Rietwyk Kevin J. , Barad Hannah‐Noa , Majhi Koushik , Ginsburg Adam , Anderson Assaf Y. , Zaban Arie 
Published: January 2016

AbstractOxide materials have been widely investigated for use as absorber layers in high‐performance solar cells, and in this study combinatorial methods were used to specifically investigate cobalt–iron (Co–Fe) oxide composites. Structural inversion of Co–Fe oxides from a normal to an inverse spinel structure occurs at the critical composition of approximately 33 % Fe added to Co, causing changes in the crystallinity, symmetry, sub‐lattice vibrational modes, optical bandgap, and electrical resistivity. When used as an absorber layer in all‐oxide solar cells with the multi‐layered geometry of glass|FTO|TiO2|Co–Fe–O|Au, enhanced photovoltaic performance was observed, with a maximum Voc of 534 mV at a composition of approximately 45 % Fe and a 200 % improvement in Pmax compared to cobalt‐rich devices. Using combinatorial data maps of the various material properties, a significant correlation between the solar cell properties and the chemical composition of the Co–Fe–O layer was revealed. This correlation allows for a better understanding of the Co–Fe–O system, which is a necessary step towards the development of Co–Fe–O‐based all‐oxide solar cells.
High‐frequency streamflow acquisition and bed level/flow angle estimates in a mountainous river using shallow‐water acoustic tomography
Authors: Kawanisi Kiyosi , Bahrainimotlagh Masoud , Al Sawaf Mohamad Basel , Razaz Mahdi 
Published: January 2016

AbstractThe acquisition of reliable discharge estimates is crucial in hydrological studies. This study demonstrates a promising acoustic method for measuring streamflow at high sampling rate for a long period using the fluvial acoustic tomography system (FATS). The FATS recently emerged as an innovative technique for continuous measurements of streamflow. In contrast to the traditional point/transect measurements of discharge, the FATS enables the depth‐averaged and range‐averaged flow velocity along the ray path to be measured in a fraction of a second. The field test was conducted in a shallow gravel‐bed river (0.9 m deep under low‐flow conditions, 115 m wide) for 1 month. The parameters (stream direction and bottom elevation) required for calculating the streamflow were deduced by a nonlinear regression to the discharge data from the well‐established rating curve. The cross‐sectional average velocities were automatically calculated from the acoustic data, which were collected on both riverbanks every 30 s. The FATS was connected to the internet so that the real‐time flow data could be obtained. The FATS captured discharge variations at a cut‐off frequency of approximately 70 day−1. The stream exhibited temporal discharge changes at multiple time scales ranging from a few tens of minutes to days. Copyright © 2016 John Wiley & Sons, Ltd.
Reenvisioning velocity reversal as a diversity of hydraulic patch behaviours
Authors: Strom Michael A. , Pasternack Gregory B. , Wyrick Joshua R. 
Published: January 2016

AbstractPast research investigated the surpassing of mean velocity at riffle cross sections by that at pool cross sections for flows up to bankfull, termed ‘velocity reversals’, to understand one mechanism by which riffle–pool relief is maintained. This study reenvisioned the classic velocity reversal by documenting stage‐dependent changes to the locations of peak velocity without cross sections. Instead, the dynamics of peak velocity patches were considered for flows spanning 0.2 to 22 times bankfull discharge through the use of a high‐resolution DEM and two‐dimensional hydrodynamic modelling. A remarkable diversity in peak velocity patch behaviour was found across discharges, including gradual expansion and shifting as well as abrupt disappearance and emergence relative to the low‐flow patch locations. These behaviours blended together to varying degrees to produce many reversals in peak velocity across morphological units, but it took substantially higher than bankfull discharge for peak velocities to move from riffles and chutes to fast glides and pools. The discharges at which reversals occurred among morphological units were significantly higher for the valley‐confined reach than for the anastomosing reach. Copyright © 2016 John Wiley & Sons, Ltd.