bluuebunny/crossref_metadata_2025_split huggingface dataset:
Achieving Vinylic Selectivity in Mizoroki–Heck Reaction of Cyclic Olefins
Authors: Wu Xiaojin , Lu Yunpeng , Hirao Hajime , Zhou Jianrong (Steve) 
Published: March 2013

AbstractIn Heck reactions of cyclic olefins, the products usually have aryl groups that end up at the allylic and/or homoallylic position. We herein report new selectivity that adds aryl groups to the vinylic position. Cyclic olefins of various ring size worked well. The desired isomers were produced by palladium–hydride‐catalyzed isomerization of the initial products. Thus, a specific catalyst must be used so that it can perform two jobs under one set of reaction conditions.
ChemInform Abstract: Synthesis and Luminescent Study of Ce3+‐Doped Terbium‐Yttrium Aluminum Garnet.
Authors: Dotsenko V. P. , Berezovskaya I. V. , Zubar E. V. , Efryushina N. P. , Poletaev N. I. , Doroshenko Yu. A. , Stryganyuk G. B. , Voloshinovskii A. S. 
Published: March 2013

AbstractPolycrystalline samples of (Tb0.8Y0.2)3 (1‐x)Ce3xAl5O12 (x = 0—0.03) are prepared by solid state reaction of Al2O3 and mixed rare earth oxides (Tb,Y)4O7:Ce (about 1300 °C, 3—5 h).
ChemInform Abstract: Synthesis and Luminescent Properties of a New Phosphor, La2CaB8O16: RE3+ (RE: Eu, Tb).
Authors: Guo Rui , Tang Songling , Zheng Feng , Yang Zhenyu , Tan Dunqiang 
Published: March 2013

AbstractThe new title phosphors are synthesized by solid state reaction of Eu2O3 or Tb4O7, La2O3, CaCO3, and H3BO3 (500 °C for 10 h and 920 °C for 48 h).
ChemInform Abstract: Asymmetric Broensted Acid‐Catalyzed Nazarov Cyclization of Acyclic α‐Alkoxy Dienones.
Authors: Raja Sadiya , Ieawsuwan Winai , Korotkov Vadim , Rueping Magnus 
Published: March 2013

AbstractA new Broensted acid‐catalyzed asymmetric Nazarov cyclization to afford optically active cyclopentenones (II) in excellent enantiomeric excess is developed.
ChemInform Abstract: Regioselective Synthesis of Pyrazole Triflones Based on Triflyl Alkyne Cycloadditions.
Authors: Kawai Hiroyuki , Yuan Zhe , Tokunaga Etsuko , Shibata Norio 
Published: March 2013

AbstractIn the presence of iPr2NEt, triflyl alkynes undergo efficient and regioselective coupling with hydrazonoyl chlorides to afford pyrazoles of type (III).
ChemInform Abstract: Synthesis of trans‐Disubstituted Alkenes by Cobalt‐Catalyzed Reductive Coupling of Terminal Alkynes with Activated Alkenes.
Authors: Mannathan Subramaniyan , Cheng Chien‐Hong 
Published: March 2013

AbstractIn the presence of suitable ligands the reaction allows a mild, convenient, and highly selective access to a number of trans‐disubstituted alkenes.
ChemInform Abstract: Modular Bifunctional Chiral Thioureas as Versatile Organocatalysts for Highly Enantioselective Aza‐Henry Reaction and Michael Addition.
Authors: Li Hua , Zhang Xu , Shi Xin , Ji Nan , He Wei , Zhang Shengyong , Zhang Bangle 
Published: March 2013

AbstractVarious catalyst components are prepared from natural Cinchona alkaloids and amino acids and tested for their efficiency.
ChemInform Abstract: A Polymer‐Supported Chiral Fluorinated Dirhodium(II) Complex for Asymmetric Amination of Silyl Enol Ethers.
Authors: Oohara Tadashi , Nambu Hisanori , Anada Masahiro , Takeda Koji , Hashimoto Shunichi 
Published: March 2013

AbstractPreliminary studies concerning the application of title catalyst (I) are presented.
ChemInform Abstract: Conformationally Rigid Chiral Pyridine N‐Oxides as Organocatalyst: Asymmetric Allylation of Aldehydes.
Authors: Gnanamani Elumalai , Someshwar Nagamalla , Ramanathan Chinnasamy Ramaraj 
Published: March 2013

AbstractAmong various derivatives tested, N‐oxide (I) is found to be optimal for the process which is applied to a wide range of aromatic and aliphatic aldehydes.
ChemInform Abstract: A Versatile Ruthenium(II)‐NNC Complex Catalyst for Transfer Hydrogenation of Ketones and Oppenauer‐Type Oxidation of Alcohols.
Authors: Du Wangming , Wang Liandi , Wu Ping , Yu Zhengkun 
Published: March 2013

AbstractThe Ru complex (RUC) bearing an unsymmetrical NNC ligand is found to be a highly efficient catalyst for the transfer hydrogenation of ketones and the Oppenauer‐type oxidation of secondary alcohols.
ChemInform Abstract: Metal‐Free 2,2,6,6‐Tetramethylpiperidin‐1‐yloxy Radical (TEMPO) Catalyzed Aerobic Oxidation of Hydroxylamines and Alkoxyamines to Oximes and Oxime Ethers.
Authors: Wertz Sebastian , Studer Armido 
Published: March 2013

AbstractTEMPO‐mediated oxidation of hydroxylamines and alkoxyamines to the corresponding oxime derivatives is reported.
ChemInform Abstract: Regioselective Copper(I)‐Catalyzed C—H Hydroxylation/C—S Coupling: Expedient Construction of 2‐(Styrylthio)phenols.
Authors: Xu Run‐Sheng , Yue Lei , Pan Yuan‐Jiang 
Published: March 2013

AbstractA simple, mild, and efficient method for the title reaction is developed by using an inexpensive catalyst.
ChemInform Abstract: Immobilized Palladium Nanoparticles on Silica—Starch Substrate (PNP—SSS): As a Stable and Efficient Heterogeneous Catalyst for Synthesis of p‐Teraryls Using Suzuki Reaction.
Authors: Khalafi‐Nezhad Ali , Panahi Farhad 
Published: March 2013

AbstractA variety of para‐, meta‐ and ortho‐teraryls is prepared in high yields under aqueous conditions from the corresponding benzene diiodides, dichlorides and dibromides.
ChemInform Abstract: Four Tandem C—H Activations: A Sequential C—C and C—O Bond Making via a Pd‐Catalyzed Cross Dehydrogenative Coupling (CDC) Approach.
Authors: Guin Srimanta , Rout Saroj Kumar , Banerjee Arghya , Nandi Shyamapada , Patel Bhisma K. 
Published: March 2013

AbstractTreatment of activated benzenes with methylarenes in the presence of tBuOOH and Pd(OAc)2 is found to provide a new, unprecedented method to prepare ortho‐functionalized diaryl ketones.
ChemInform Abstract: I2—CF3SO3H Synergistic Promoted sp3 C—H Bond Diarylation of Aromatic Ketones.
Authors: Zhu Yan‐ping , Jia Feng‐cheng , Liu Mei‐cai , Wu Liu‐ming , Cai Qun , Gao Yang , Wu An‐xin 
Published: March 2013

AbstractI2/TfOH‐Mediated treatment of aryl methyl ketones with some electron‐rich arenes such as N,N‐dialkylanilines and N‐substituted pyrroles allows an efficient access to 1,2,2‐triarylethanones.
ChemInform Abstract: Highly Enantioselective Michael Addition of 2‐Oxindole‐3‐carboxylate Esters to Nitroolefins Promoted by Cinchona Alkaloid Thiourea—Broensted Acid Cocatalysts.
Authors: Chen Xianjie , Zhu Wei , Qian Wangke , Feng Enguang , Zhou Yu , Wang Jinfang , Jiang Hualiang , Yao Zhu‐Jun , Liu Hong 
Published: March 2013

AbstractThe reaction proceeds with moderate dia‐ and high enantioselectivity.
ChemInform Abstract: Base‐Mediated Carboxylation of Unprotected Indole Derivatives with Carbon Dioxide.
Authors: Yoo Woo‐Jin , Capdevila Montse Guiteras , Du Xiangwei , Kobayashi Shu 
Published: March 2013

AbstractA new, general, and straightforward method to prepare 3‐carboxylated indoles and related compounds is reported.
ChemInform Abstract: Efficient Synthesis of N‐Alkyl‐2,7‐dihalocarbazoles by Simultaneous Carbazole Ring Closure and N‐Alkylation.
Authors: Vyprachticky Drahomir , Kminek Ivan , Pokorna Veronika , Cimrova Vera 
Published: March 2013

AbstractA new and simple synthesis of the title compounds is developed by using a mixture of 4‐nitrotoluene and trialkyl phosphite as N‐alkylating agent.
ChemInform Abstract: A Manifold Three‐Step Synthetic Route to Polycyclic Annulated Hydantoins via Cyclic Imines.
Authors: Brockmeyer Fabian , Kroeger Denis , Stalling Timo , Ullrich Pasqual , Martens Juergen 
Published: March 2013

AbstractIn the first step, cyclic imines (III) and (X) are prepared which are suitable substrates for subsequent three‐component Ugi reactions to afford bisamides (VI) and (XII), respectively.
ChemInform Abstract: Heterocyclyl Linked Anilines and Benzaldehydes as Precursors for Biologically Significant New Chemical Entities.
Authors: Verma Raman K. , Kumar Vijay , Ghosh Prithwish , Wadhwa Lalit K. 
Published: March 2013

AbstractThe syntheses of benzaldehydes and anilines linked at the para‐position with an alkoxy ether linkage to heterocycles such as benzimidazole, indole, and acridone are reported.
ChemInform Abstract: One‐Pot Tandem Synthesis of 2‐Arylbenzoxazole Derivatives via Copper‐Catalyzed C—N and C—O Bond Formation.
Authors: Kavala Veerababurao , Janreddy Donala , Raihan Mustafa J. , Kuo Chun‐Wei , Ramesh Chintakunta , Yao Ching‐Fa 
Published: March 2013

AbstractA variety of benzoxazole derivatives is available from 2‐(2‐iodophenyl)iodobenzamides and nitrogen nucleophiles such as primary and secondary amines or carboxylic amides and heterocycles.
ChemInform Abstract: Photochemically Induced Silylacylations of Alkynes with Acylsilanes.
Authors: Zhang Hui‐Jun , Becker Peter , Huang He , Pirwedjan Ramona , Pan Fang‐Fang , Bolm Carsten 
Published: March 2013

AbstractIntramolecular reactions proceed with stereoselective formation of new C—C and C—Si bonds to afford chromone derivatives.
ChemInform Abstract: Gold‐Catalyzed Diastereoselective [2 + 2 + 2]‐Cycloaddition of 1,7‐Enynes with Carbonyl Compounds.
Authors: Huple Deepak B. , Liu Rai‐Shung 
Published: March 2013

AbstractA series of tricyclic derivatives is prepared by cycloaddition reaction of enynes (I) with aldehydes and ketones.
ChemInform Abstract: Reversible Alkylation of Dimedone with Aldehyde: A Neglected Way for Maximizing Selectivity of Three‐Component Reactions of Dimedone and an Aldehyde.
Authors: Li Minghao , Gu Yanlong 
Published: March 2013

AbstractThree‐component reactions of the salicyl aldehydes with dimedones and carbon nucleophiles as indoles, pyrazoles or naphthols require FeCl3 and PPh3 as catalysts and proceed via formation, breaking and regeneration of the C—C bonds.
ChemInform Abstract: Efficient Synthesis of Novel 9H‐Xanthen‐9‐yl Derivatives of Bidentate Heterocyclic Nucleophiles by Fe(HSO4)3 as a Catalyst.
Authors: Eshghi Hossein , Bakavoli Mehdi , Abedini‐Torghabeh Javad , Rahimizadeh Mohammad 
Published: March 2013

AbstractA simple protocol is presented for the hydrogensulfate catalyzed direct substitution of 9H‐xanthen‐9‐ol with heterocyclic amines, hydrazines, and hydrazine carboxamides to give the corresponding 9‐nitrogen substituted derivatives.
ChemInform Abstract: Cooperative Heterogeneous Organocatalysis and Homogeneous Metal Catalysis for the One‐Pot Regioselective Synthesis of 2‐Pyridones.
Authors: Allais Christophe , Basle Olivier , Grassot Jean‐Marie , Fontaine Maxime , Anguille Stephane , Rodriguez Jean , Constantieux Thierry 
Published: March 2013

AbstractAn unprecedented formal [3 + 3]‐cyclodehydration approach leads to the synthesis of N‐alkyl and N‐arylsubstituted 2‐pyridones from β‐ketoamides and primary or secondary propargylic alcohols.
ChemInform Abstract: Lewis Acid Catalyzed Conjugate Addition of sp3 C—H Bonds to Methylenemalononitriles.
Authors: Qian Bo , Shi Dengjian , Yang Lei , Huang Hanmin 
Published: March 2013

AbstractThe addition reaction with various 2‐alkylazaarenes leads to heterocycle‐containing dinitrile systems, which are useful building blocks for medicinal compounds.
ChemInform Abstract: Highly Regioselective Synthesis of Polysubstituted Tetrahydroquinolines by an Iodine‐Induced Tandem Cyclization Reaction from Propargylic Alcohols and Amines.
Authors: Ye Yu‐Ying , Zhao Lian‐Biao , Zhao Shu‐Chun , Yang Fang , Liu Xue‐Yuan , Liang Yong‐Min 
Published: March 2013

AbstractA versatile, convenient, and environmentally friendly protocol for the synthesis of substituted tetrahydroquinolines is presented (21 examples).
ChemInform Abstract: Enantioselective, NHC‐Catalyzed Annulations of Trisubstituted Enals and Cyclic N‐Sulfonylimines via α,β‐Unsaturated Acyl Azoliums.
Authors: Kravina Alberto G. , Mahatthananchai Jessada , Bode Jeffrey W. 
Published: March 2013

AbstractThe presented studies extend the scope of highly enantioselective NHC‐catalyzed reactions and offer, for the first time, the opportunity for highly enantio‐ and diastereoselective annulations of α‐ and β,β′‐substituted enals.
ChemInform Abstract: Copper‐Catalyzed Decarboxylative Three‐Component Reactions for the Synthesis of Imidazo[1,2‐a]pyridines.
Authors: Palani Thiruvengadam , Park Kyungho , Kumar Manian Rajesh , Jung Hyun Ming , Lee Sunwoo 
Published: March 2013

AbstractTitle compounds are synthesized by the present new three‐component coupling reaction of aminopyridines, alkynecarboxylic acids, and aldehydes (II) in the presence of CuI/Cu(OTf)2.
ChemInform Abstract: An Efficient Three‐Component, One‐Pot Synthesis of 2‐Alkylthio‐4‐amino‐5‐cyano‐6‐aryl(alkyl)pyrimidines in Water.
Authors: Li Qiao‐Yan , Ge Ze‐Mei , Cheng Tie‐Ming , Li Run‐Tao 
Published: March 2013

AbstractA series of functionalized pyrimidine derivatives is synthesized via the present new three‐component, one‐pot reaction of aldehydes, malononitrile and S‐alkylisothiouronium salts in water.
ChemInform Abstract: Novel Ionic Liquid Supported‐Multicomponent Reaction Toward Chimeric Bis‐heterocycles.
Authors: Chen Chih‐Hau , Chen Chan‐Yu , Lin Po‐Tsung , Sun Chung‐Ming 
Published: March 2013

AbstractThe present new reaction between aminobenzoimidazoles, aldehydes, and electron‐deficient dienophiles employs aminobenzoimidazoles which are immobilized on an ionic liquid support.
ChemInform Abstract: Catalyst Free Synthesis of Fused Pyrido[2,3‐d]pyrimidines and Pyrazolo[3,4‐b]pyridines in Water.
Authors: Rahmati Abbas , Khalesi Zahra 
Published: March 2013

AbstractOne‐pot three‐component condensations of heterocyclic amines (I) or (V) with benzoyl acetonitrile and aromatic aldehydes give pyridopyrimidines (IV), and pyrazolopyridines (VI), resp., in good yields.
ChemInform Abstract: Preparation of Organotrifluoroborate Salts: Precipitation‐Driven Equilibrium under Non‐Etching Condition.
Authors: Lennox Alastair J. J. , Lloyd‐Jones Guy C. 
Published: March 2013

AbstractA new, scalable, and effective procedure for the synthesis of the title salts in high purity is developed with a very simple isolation.
ChemInform Abstract: Gold Nanoparticles‐Catalyzed Activation of 1,2‐Disilanes: Hydrolysis, Silyl Protection of Alcohols and Reduction of tert‐Benzylic Alcohols.
Authors: Gryparis Charis , Stratakis Manolis 
Published: March 2013

AbstractThe hydrolysis of disilanes (I) in the presence of a gold catalyst gives rise to disiloxane (II) and/or silanols (III).
ChemInform Abstract: Study and Synthesis of Biologically Active Phenothiazines, Their Sulfones, and Ribofuranosides.
Authors: Khandelwal Nishidha , Yadav Abhilasha , Gautam Naveen , Gautam D. C. 
Published: March 2013

AbstractNew 10H‐phenothiazines (II) are synthesized using the Smiles rearrangement and converted into corresponding sulfones (V) and ribofuranosides (IV).
ChemInform Abstract: Surface Treatment of Polymeric Materials Controlling the Adhesion of Biomolecules
Authors: Poncin‐Epaillard Fabienne , Vrlinic Tjasa , Debarnot Dominique , Mozetic Miran , Coudreuse Arnaud , Legeay Gilbert , El Moualij Benaissa , Zorzi Willy 
Published: March 2013

AbstractReview: 83 refs.
Energies and Spin States of FeS0/−, FeS20/−, Fe2S20/−, Fe3S40/−, and Fe4S40/− Clusters
Authors: Li Yan‐Ni , Wang Shengguang , Wang Tao , Gao Rui , Geng Chun‐Yu , Li Yong‐Wang , Wang Jianguo , Jiao Haijun 
Published: March 2013

AbstractThe structures and energies of the electronic ground states of the FeS0/−, FeS20/−, Fe2S20/−, Fe3S40/−, and Fe4S40/− neutral and anionic clusters have been computed systematically with nine computational methods in combination with seven basis sets. The computed adiabatic electronic affinities (AEA) have been compared with available experimental data. Most reasonable agreements between theory and experiment have been found for both hybrid B3LYP and B3PW91 functionals in conjugation with 6‐311+G* and QZVP basis sets. Detailed comparisons between the available experimental and computed AEA data at the B3LYP/6‐311+G* level identified the electronic ground state of 5Δ for FeS, 4Δ for FeS−, 5B2 for FeS2, 6A1 for FeS2−, 1A1 for Fe2S2, 8A′ for Fe2S2−, 5A′′ for Fe3S4, 6A′′ for Fe3S4−, 1A1 for Fe4S4, and 1A2 for Fe4S4−. In addition, Fe2S2, Fe3S4, Fe3S4−, Fe4S4, and Fe4S4− are antiferromagnetic at the B3LYP/6‐311+G* level. The magnetic properties are discussed on the basis of natural bond orbital analysis.
Stochastic modeling of signal propagation in power‐line communication networks
Authors: Sabolić Dubravko , Car Željka 
Published: March 2013

SUMMARYSignal propagation through power‐line networks has been studied by a number of researchers. Among a number of propagation models described in literature, deterministic models based on actual physical description of the network can be constructed as both very accurate and very efficient in computational terms. Yet they have an inherent drawback of being suitable for propagation analyses in static conditions and steady state only. Thus, our main research problem was how to extend a deterministic frequency‐domain‐based propagation model for a more practically useful modeling of channels of multi‐port power‐line communication networks. We have concentrated on a particular model that we presented in an earlier literature. Our main findings are as follows: Computationally efficient deterministic models can be utilized for stochastic simulations in multi‐port power‐line network environments by repeating the propagation simulation routine virtually as many times as needed, to model the network parameter variability by appropriate stochastic modeling of termination impedances connected to each of the multiple network ports. In this way, an extended set of physical properties of the channel can be simulated and statistically analyzed, such as the complex transfer function, impulse response, delay spread, and group delay. Copyright © 2013 John Wiley & Sons, Ltd.
Structure of a mosaic hybrid zone between the field cricketsGryllus firmusandG. pennsylvanicus
Authors: Larson Erica L. , Guilherme Becker C. , Bondra Eliana R. , Harrison Richard G. 
Published: March 2013

AbstractHybrid zones provide insight into the nature of species boundaries and the evolution of barriers to gene exchange. Characterizing multiple regions within hybrid zones is essential for understanding both their history and current dynamics. Here, we describe a previously uncharacterized region of a well‐studied hybrid zone between two species of field crickets,Gryllus pennsylvanicusandG. firmus. We use a combination of mitochondrialDNAsequencing, morphological data, and modeling of environmental variables to identify the ecological factors structuring the hybrid zone and define patterns of hybridization and introgression. We find an association between species distribution and natural habitat;Gryllus pennsylvanicusoccupies natural habitat along forest edges and natural clearings, whereasG. firmusoccupies more disturbed areas in agricultural and suburban environments. Hybridization and introgression occur across patch boundaries; there is evidence of substantial admixture both in morphological characters and mtDNA, over a broad geographic area. Nonetheless, the distribution of morphological types is bimodal. Given that F1hybrids are viable and fertile in the lab, this suggests that strong pre‐zygotic barriers are operating in this portion of the hybrid zone.
Coral population trajectories, increased disturbance and management intervention: a sensitivity analysis
Authors: Riegl Bernhard , Berumen Michael , Bruckner Andrew 
Published: March 2013

AbstractCoral reefs distant from human population were sampled in the Red Sea and one‐third showed degradation by predator outbreaks (crown‐of‐thorns‐starfish = COTS observed in all regions in all years) or bleaching (1998, 2010). Models were built to assess future trajectories. They assumed variable coral types (slow/fast growing), disturbance frequencies (5,10,20 years), mortality (equal or not), and connectivity (un/connected to un/disturbed community). Known disturbances were used to parameterize models. Present and future disturbances were estimated from remote‐sensing chlorophyll and temperature data. Simulations and sensitivity analysis suggest community resilience at >20‐year disturbance frequency, but degradation at higher frequency. Trajectories move from fast‐grower to slow‐grower dominance at intermediate disturbance frequency, then again to fast‐grower dominance. A similar succession was observed in the field: Acropora to Porites to Stylophora/Pocillopora dominance on shallow reefs, and a transition from large poritids to small faviids on deep reefs. Synthesis and application: Even distant reefs are impacted by global changes. COTS impacts and bleaching were key driver of coral degradation, coral population decline could be reduced if these outbreaks and bleaching susceptibility were managed by maintaining water quality and by other interventions. Just leaving reefs alone, seems no longer a satisfactory option.
Emulsifier and antioxidant properties of by‐products obtained by enzymatic degumming of soybean oil
Authors: Cabezas Dario M. , Diehl Bernd W. K. , Tomás Mabel C. 
Published: March 2013

AbstractThe enzymes used in degumming, called phospholipases, specifically act on phospholipids without degrading the oil itself. Degumming using a phospholipase C enzyme allows to meet all market specifications while it increases the oil yield. The aim of this study was to evaluate antioxidant and emulsifier properties of the recovered gum (RG) obtained by enzymatic oil degumming process of crude soybean oil subjected to modifications as deoiling (RG deoiled) or ethanol fractionation (RG soluble and insoluble). RG soluble allowed obtaining more stable oil‐in‐water emulsions (30:70 w/w) in comparison with those by‐products assayed at different concentrations (0.1–1.0%). Also, deoiled soybean lecithin (DSL) and RG deoiled had a similar behavior in relation to the kinetic destabilization (% backscattering profiles), despite the different degumming processes used to obtain these samples. The study on induction times (Metrohm Rancimat) showed a significant antioxidant effect (p<0.05) against a refined sunflower oil associated with all the by‐products analyzed. However, RG soluble and DSL showed a strong effect on the oil stability at high concentrations (1000–2000 ppm). These results showed that the deoiled recovered gum and its derivates obtained by ethanol fractionation are a potential alternative for industrial application as additive.Practical applications: The economic benefits of enzymatic degumming process have also been quantified by several oilseed processors. This process allows obtaining a by‐product with a high concentration of different phospholipids. This study intends to increase the commercial value of this recovered gum contributing to the food industry with useful information about their functional properties.
How to Lose a Bond in Two Ways ― The Diradical/Zwitterion Dichotomy in Cycloaromatization Reactions
Authors: Peterson Paul W. , Mohamed Rana K. , Alabugin Igor V. 
Published: March 2013

AbstractCycloaromatization reactions decouple two electrons by breaking two π bonds to form only one σ bond and illustrate one of the most common mechanistic dichotomies in chemistry, namely the two ways of breaking a chemical bond: Zwitterionic or diradical. With a suitable choice of reaction conditions, substitution patterns, and catalysts, cycloaromatization processes can be redirected from the usual formation of a diradical towards a variety of zwitterionic pathways. This review illustrates the practical approaches for directing zwitterionic cycloaromatization reactions and lays the mechanistic foundations for the further development of this emerging field.