bluuebunny/crossref_metadata_2025_split huggingface dataset:
Integrating EMDR into an evolutionary‐based therapy for depression: a case study
Authors: Krupnik Valery 
Published: February 2015

Key Clinical MessageWe present an intervention in a case of major depression, where eye movement desensitization and reprocessing (EMDR) therapy was integrated into an evolutionary‐based psychotherapy for depression. At the end of the treatment and at follow up assessment we observed a more accepting disposition and decreased depressive but not anxiety symptoms.
ChemInform Abstract: A New 12L‐Hexagonal Perovskite Cs4Mg3CaF12: Structural Transition Derived from the Partial Substitution of Mg2+ with Ca2+.
Authors: Wang Zheng , Jing Qun , Zhang Min , Dong Xiaoyu , Pan Shilie , Yang Zhihua 
Published: February 2015

AbstractSingle crystals of 12L‐hexagonal perovskite Cs4Mg3CaF12 are grown by spontaneous crystallization from a mixture containing CsF, MgF2, CaF2, and H3BO3 in the molar ratio of 5:1:1:9 (Pt crucible, 720 °C, 8 h; cooling to 650 °C at a rate of 2 °C/h).
ChemInform Abstract: Synthesis, Structural, and Transport Properties of Cr‐Doped BaTi2As2O.
Authors: Mu Gang , et al. et al. 
Published: February 2015

AbstractCr‐doped BaTi2‐xCrxAs2O (x = 0—0.154) is synthesized by solid state reaction of stoichiometric mixtures of CrAs (obtained from Cr and As at 700 °C for 20 h), BaO, Ti, and As (950 °C, 5 d).
ChemInform Abstract: Synthesis and Stability of Two‐Dimensional Ge/Sn Graphane Alloys.
Authors: Arguilla Maxx Q. , Jiang Shishi , Chitara Basant , Goldberger Joshua E. 
Published: February 2015

AbstractAlloyed Ge/Sn graphane analogues are prepared by topochemical deintercalation of CaGe2‐2xSn2x (x = 0—0.09) in conc.
ChemInform Abstract: Perovskite Oxide Nanosheets with Tunable Band‐Edge Potentials and High Photocatalytic Hydrogen‐Evolution Activity.
Authors: Maeda Kazuhiko , Eguchi Miharu , Oshima Takayoshi 
Published: February 2015

AbstractPerovskite nanosheets of HCa2‐xSrxNb3O10 and HCa2Nb3‐yTayO10 with controlled band‐edge potentials are prepared by H+ exchange (1 M HNO3, 1 week) of KCa2‐xSrxNb3O10 which itself is prepared by a polymerized complex method involving a MeOH solution of NbCl5 and TaCl5 to which CaCO3, SrCO3, KCl, ethylene glycol, and anhydrous citric acid are added (400 K) followed by calcination of the produced transparent resin in air (Al2O3 crucible, 1.
ChemInform Abstract: Cyclobutene Formation in PtCl2‐Catalyzed Cycloisomerizations of Heteroatom‐Tethered 1,6‐Enynes.
Authors: Ni Zhenjie , Giordano Laurent , Tenaglia Alphonse 
Published: February 2015

AbstractA variety of diastereomerically pure azabicyclo[3.2.0]heptenes and oxazabicyclo[3.2.0]heptenes is readily prepared by Pt‐catalyzed cycloisomerization reaction of corresponding enynes (I) and (III), respectively.
ChemInform Abstract: Regioselective Palladium‐Catalyzed Ring‐Opening Reactions of C1‐Substituted Oxabenzonorbornadienes.
Authors: Raheem Mohammed Abdul , Edmunds Michael , Tam William 
Published: February 2015

AbstractPalladium‐catalyzed ring‐opening reactions of C1‐substituted oxabenzonorbornadienes with aryl iodides are studied.
ChemInform Abstract: A Mild, Copper‐Catalyzed Amide Deprotection Strategy: Use of tert‐Butyl as a Protecting Group.
Authors: Evans Vikki , Mahon Mary F. , Webster Ruth L. 
Published: February 2015

AbstractA catalytic amount of Cu(OTf)2 can be used to affect a mild de‐tert‐butylation of N,N‐disubstituted amides, e.g. (I), (III), and (V).
ChemInform Abstract: Phospho Sulfonic Acid as an Efficient and Recyclable Solid Acid Catalyst for the Solvent‐Free Preparation of Acylals.
Authors: Kalla Reddi Mohan Naidu , Park Huiju , Hoang Trinh Thi Kim , Kim Il 
Published: February 2015

AbstractThe cost effective, mild, and efficient catalyst is recycled and reused in nine additional cycles with only slightly decreasing reaction yields.
ChemInform Abstract: Development of Chiral Heteroleptic Magnesium Amides; Asymmetric Deprotonations Mediated by Six‐Membered Metallocyclic Amidomagnesium Naphtholates.
Authors: Carswell Emma L. , Kerr William J. , McArthur Duncan , Pazick� Marek , Watson Allan J. B. 
Published: February 2015

AbstractA series of chiral six‐membered metallocyclic amidomagnesium naphthalates is prepared and used in the asymmetric deprotonation of prochiral ketones.
ChemInform Abstract: Radical Aminomethylation of Imines.
Authors: Fujii Shintaro , Konishi Takehito , Matsumoto Yusuke , Yamaoka Yousuke , Takasu Kiyosei , Yamada Ken‐ichi 
Published: February 2015

AbstractThe title reaction is used for the preparation of 1,2‐diamine units as important structural synthons.
ChemInform Abstract: An Efficient Synthesis of N‐Alkyl‐N‐arylputrescines and Cadaverines
Authors: Mollo Maria C. , Gruber Nadia , Diaz Jimena E. , Bisceglia Juan A. , Orelli Liliana R. 
Published: February 2015

Abstractvia N‐alkylation of aryl amines with ω‐haloalkyl nitriles (I) followed by reduction of the crude amination products
ChemInform Abstract: One‐Pot Synthesis of Aromatic Homoallylic Alcohols from Aldehydes and Grignard Reagents Promoted by Titanium(IV) Tetraisopropanolate.
Authors: Song Xiao‐Nan , Lu Lei , Hua Si‐Kai , Chen Wei‐Dong , Ren Jiangmeng 
Published: February 2015

AbstractAromatic‐, heteroaromatic‐, and aliphatic‐aldehydes can be used in the presented efficient method to yield the title products in good yields.
ChemInform Abstract: First Example of the Intermolecular Palladium‐Catalyzed Asymmetric Allylic Alkylation of Hydroxyacrylates: Synthesis of All‐Carbon α‐Aryl Quaternary Aldehydes.
Authors: Asad Sharif A. , Ulicki Joseph , Shevyrev Maria , Uddin Nazim , Alberch Eduardo , Hossain M. Mahmun 
Published: February 2015

AbstractA novel intermolecular asymmetric Pd‐catalyzed alkylation of 3‐hydroxy‐2‐arylacrylates is developed using a C2‐symmetric diphenylphosphine derivative as catalytic ligand.
ChemInform Abstract: Regioselective Synthesis of Enones via a Titanium‐Promoted Coupling of Unsymmetrical Alkynes with Weinreb Amides.
Authors: Silwal Sajan , Rahaim Ronald J. 
Published: February 2015

AbstractIn the presented enone synthesis a large scope of internal symmetric and asymmetric alkynes can be applied as substrates with good yields.
ChemInform Abstract: Synthesis of Highly Functionalized Benzofuran‐2‐carboxamides by Ugi Four‐Component Reaction and Microwave‐Assisted Rap—Stoermer Reaction.
Authors: Han Weiwei , Wu Jinlong , Dai Wei‐Min 
Published: February 2015

AbstractDepending on the nature of the aryl aniline, application of salicyl aldehydes with electron‐withdrawing substituents, such as (VIII), may favor the formation of the hydantoin instead of the benzofuran‐2‐carboxamide, such as (IX) vs.
ChemInform Abstract: Transition‐Metal‐Free Oxidative Amidation of Benzyl Alcohols with Amines Catalyzed by NaI: A New Method for the Synthesis of Benzamides.
Authors: Karimi Meghdad , Saberi Dariush , Azizi Kobra , Arefi Marzban , Heydari Akbar 
Published: February 2015

AbstractThe formation of a tertiary amide using imidazole is unsuccessful.
ChemInform Abstract: A Catalyst‐Free Protocol for Direct Oxidative Esterification of Alcohols and Aldehydes.
Authors: Rajbongshi Kamal Krishna , Sarma Manas Jyoti , Phukan Prodeep 
Published: February 2015

AbstractApplication of cinnamyl alcohol furnishes 2‐bromo‐3‐methoxy‐3‐phenylpropan‐1‐ol instead of methyl cinnamate.
ChemInform Abstract: Synthesis of 2‐Phenylnaphthalenes from Styryl‐2‐methoxybenzenes
Authors: Mudududdla Ramesh , Sharma Rohit , Abbat Sheenu , Bharatam Prasad V. , Vishwakarma Ram A. , Bharate Sandip B. 
Published: February 2015

Abstract[via TFA‐catalyzed C—C bond cleavage followed by intermolecular [4 + 2] cycloaddition of in situ formed styrenyl trifluoroacetate intermediates; 27 examples].
ChemInform Abstract: Palladium/Click Ferrophos‐Catalyzed Asymmetric Domino Allylstannylation—Heck Reaction of o‐Formylaryl Triflate.
Authors: Tada Atsuo , Tokoro Yuichiro , Fukuzawa Shin‐ichi 
Published: February 2015

AbstractThe reaction of 4‐substituted substrates [e.g. (I)] give the 3‐methylene‐indan‐1‐ols in good yields with high enantioselectivities whereas, 5‐ and 6‐substituted substrates occasionally afford the corresponding Stille coupling product.
ChemInform Abstract: Diisobutylaluminum Hydride Promoted Cyclization of o‐(Trimethylsilylethynyl)styrenes to Indenes.
Authors: Kinoshita Hidenori , Hirai Nobuyoshi , Miura Katsukiyo 
Published: February 2015

AbstractThe reaction of o‐(trimethylsilylethynyl)styrenes with diisobutylaluminum hydride efficiently provides trimethylsilyl‐1H‐indenes.
ChemInform Abstract: Enantioselective α‐Hydroxylation of β‐Keto Esters Catalyzed by Cinchona Alkaloid Derivatives.
Authors: Wang Yakun , Li Zhi , Xiong Ting , Zhao Jingnan , Meng Qingwei 
Published: February 2015

AbstractIn contrast to the five‐membered tetrahydroindenes, six‐membered tetrahydronaphthalene derivatives are unreactive.
ChemInform Abstract: Iminoxyl Radical‐Promoted Dichotomous Cyclizations: Efficient Oxyoximation and Aminooximation of Alkenes.
Authors: Peng Xie‐Xue , Deng Yun‐Jing , Yang Xiu‐Long , Zhang Lin , Yu Wei , Han Bing 
Published: February 2015

AbstractA metal‐free oxyoximation of allyloximes using tBuONO as the NO‐source is developed to yield a variety of isoxazoline substituted aldoximes and ketoximes.
ChemInform Abstract: Synthesis of N‐Benzothiazol‐2‐yl‐amides by an Iron‐Catalyzed Oxidative C(sp2)—H Functionalization.
Authors: Wang Junke , Zong Yingxiao , Zhang Xuexin , Gao Yang , Li Zhengliang , Yue Guoren , Quan Zhengjun , Wang Xicun 
Published: February 2015

AbstractIn contrast to the cyclization of 1‐acetyl‐3‐arylthioureas, 1‐benzoyl‐arylthioureas form complex reaction mixtures.
ChemInform Abstract: A Metal‐Free Three‐Component Reaction for the Regioselective Synthesis of 1,4,5‐Trisubstituted 1,2,3‐Triazoles.
Authors: Thomas Joice , John Jubi , Parekh Nikita , Dehaen Wim 
Published: February 2015

AbstractFunctionalized triazoles which are difficult to access otherwise are formed in good yields by a three‐component reaction of readily available building blocks.
ChemInform Abstract: Synthesis of 2‐Alkynyl 1,3,4‐Oxadiazoles by Palladium‐Catalyzed Cross‐ Coupling Reaction.
Authors: Salvanna N. , Das Biswanath 
Published: February 2015

AbstractThe transformation of 2‐chloro instead of 2‐bromo‐1,3,4‐oxadiazoles requires longer reaction times and affords the products in lower yields.
ChemInform Abstract: 1,1′‐Butylenebis(3‐methyl‐3H‐imidazol‐1‐ium) Dihydrogensulfate as a Halogen‐Free and Reusable Binuclear Broensted Ionic Liquid Catalyzed the Synthesis of Pyrano[4,3‐b]pyran Derivatives
Authors: Khaligh Nader Ghaffari 
Published: February 2015

Abstractvia multicomponent reaction of 4‐hydroxypyran‐2‐one with aromatic aldehydes and malononitrile
ChemInform Abstract: Pd‐Catalyzed Intramolecular Regioselective Arylation of 2‐Pyrones, Pyridones, Coumarins and Quinolones by C—H Bond Functionalization.
Authors: Nolan Marie‐Therese , Bray Joshua T. W. , Eccles Kevin , Cheung Man Sing , Lin Zhenyang , Lawrence Simon E. , Whitwood Adrian C. , Fairlamb Ian J. S. , McGlacken Gerard P. 
Published: February 2015

AbstractThe regioselective Pd‐catalyzed cyclization of a number of heterocyclic substrates without added phosphine ligands is reported.
ChemInform Abstract: Rhodium(III)‐Catalyzed C—C Bond Formation of Quinoline N‐Oxides at the C‐8 Position under Mild Conditions.
Authors: Jeong Jisu , Patel Pitambar , Hwang Heejun , Chang Sukbok 
Published: February 2015

AbstractThe Rh‐catalyzed alkylation of a variety of substituted quinoline N‐oxides with activated methylene compounds (II) and (VI) is investigated to give C‐8 substituted products selectively.
ChemInform Abstract: Unprecedented Catalytic Activity of Fe(NO3)3·9H2O: Regioselective Synthesis of 2‐Nitroimidazopyridines via Oxidative Amination.
Authors: Monir Kamarul , Bagdi Avik Kumar , Ghosh Monoranjan , Hajra Alakananda 
Published: February 2015

AbstractThe reaction of nitrostyrenes with 2‐aminopyridines proceeds via a regioselective Mannich addition followed by a unique Fe(NO3)3·9H2O catalyzed intramolecular oxidative amination to provide a regioselective synthesis of 2‐nitro‐3‐arylimidazo[1,2‐a]pyridines.
ChemInform Abstract: Lewis Acid Free Synthesis of 3,4‐Dihydro‐1H‐indazolo[1,2‐b]phthalazine‐1,6,11(2H,13H)‐triones Promoted by 1,1,1,3,3,3‐Hexafluoro‐2‐propanol.
Authors: Maleki Behrooz , Ashrafi Samaneh Sedigh , Tayebee Reza 
Published: February 2015

AbstractAll products are purified by recrystallization.
ChemInform Abstract: Diversity‐Oriented Decoration of Pyrrolo[1,2‐a]pyrazines.
Authors: Park Sujin , Jung Youngeun , Kim Ikyon 
Published: February 2015

AbstractA chemical library based on a pyrrolo[1,2‐a]pyrazine core is synthesized by direct C6‐arylation of pyrrolo[1,2‐a]pyrazines with various aryl bromides (II).
ChemInform Abstract: Cerium(III)‐Catalyzed Regioselective Coupling of 2‐Hydroxychalcones and Polyphenols: An Efficient Domino Approach Towards Synthesis of Novel Dibenzo‐2,8‐dioxabicyclo[3.3.1]nonanes.
Authors: Chand Ganguly Nemai , Roy Sushmita , Mondal Pallab 
Published: February 2015

AbstractThe reaction proceeds through regioselective Michael addition‐bicyclization cascade.
ChemInform Abstract: Efficient Synthesis of Aryl Boronates via Zinc‐Catalyzed Cross‐Coupling of Alkoxy Diboron Reagents with Aryl Halides at Room Temperature.
Authors: Bose Shubhankar Kumar , Marder Todd B. 
Published: February 2015

AbstractA novel Zn/NHC‐catalyzed cross‐coupling reaction of aryl and hetaryl iodide and bromides with diboron compounds (II) and (V) is reported.
ChemInform Abstract: Panthogenins A and B, Two Novel Norergostanol Steroids from Dioscorea panthaica.
Authors: Shan Xiao‐Qing , Peng Shu‐Lin , Shi Hai‐Li , Wang Xiao‐Ling , Ding Li‐Sheng , Liao Xun 
Published: February 2015

AbstractPanthogenins A (I) and B (II), two novel norergostanol steroids containing a unusual seven‐membered ring, are isolated.
ChemInform Abstract: Chemical Modification of Oximes with N‐Protected Amino Acids.
Authors: Barbakadze Nana N. , Jones Rachel A. , Rosario Nicole Rivera , Nadaraia Nanuli Sh , Kakhabrishvili Meri L. , Hall C. Dennis , Katritzky Alan R. 
Published: February 2015

AbstractThe modification of oximes, including steroids, with protected amino acids proceeds with good yields also in the presence of alcohols.
ChemInform Abstract: Gold(III) Chloride Catalyzed Synthesis of Chiral Substituted 3‐Formyl Furans from Carbohydrates: Application in the Synthesis of 1,5‐Dicarbonyl Derivatives and Furo[3,2‐c]pyridine.
Authors: Mal Kanchan , Sharma Abhinandan , Das Indrajit 
Published: February 2015

AbstractA series of 3‐formylfurans such as (II) and (VII) (17 examples in all), is prepared by treatment of alkynes (I) and (VI) with a gold catalyst followed by quenching with water as nucleophile.
ChemInform Abstract: Unsymmetrical vic‐Tricarbonyl Compounds for the Total Syntheses of Cladoniamide G and Cladoniamide F.
Authors: Schuette Julia , Kilgenstein Frank , Fischer Michel , Koert Ulrich 
Published: February 2015

AbstractSynthetic studies towards the preparation of cladoniamides F (Ia) and G (Ib) are presented.
ChemInform Abstract: Speradines F—H, Three New Oxindole Alkaloids from the Marine‐Derived Fungus Aspergillus oryzae.
Authors: Hu Xiao , Xia Qi‐Wen , Zhao Yang‐Yang , Zheng Qiu‐Hong , Liu Qin‐Ying , Chen Li , Zhang Qi‐Qing 
Published: February 2015

Abstractisolation, structural elucidation and cytotoxicity of a rare hexacyclic oxindole alkaloid, speradine F (I), together with two novel tetracyclic oxindole alkaloids, speradines G (II) and H (III)
Research and Development on Underwater Visible Light Communication Systems
Authors: Uema Hideki , Matsumura Tomokuni , Saito Shinya , Murata Yukio 
Published: February 2015

SUMMARYThe main subject of this investigation is to perform research and development and verification experiments on underwater communications (underwater visible light communications; VLCs) under the assumption that VLC can be used for tourism and environmental protection under the ocean conditions of the Okinawa region (Zamami village), which is one of the most popular diving spots, with the most transparent water and abundant coral and fish. Radio is rarely used as a communications tool underwater because the attenuation rate of radio signals is high. The only communications tool now available under water is sonic (ultrasonic) communications, although it has not spread among divers because it is subject to noise from reflections of the water surface or the sea floor, and its use is not simple. Another disadvantage of this mode of communication is that it is very difficult to identify the speaker when several divers are present in the same area. With the underwater VLC device, most of the underwater communications problems are already solved, for the following reasons: (1) the device is easy to move and does not involve cables; (2) it is much easier to capture another person's words because communication does not diverge as sonic communication does; (3) conversation is much easier since the other party can recognize the speaker visually.
Audio Watermarking Based on Vector Quantization Index Modulation Using Audio Fingerprint
Authors: NAKAYA SHOGO , WADA SHIGEO 
Published: February 2015

SUMMARYDevelopment of high‐quality digital audio watermarking with robustness to data compression and watermark attacks such as cropping is an important research topic. Recently, an effective watermarking method using vector quantization index modulation (VQIM) was proposed to improve the watermark performance. In this paper, a new auditory‐band MDCT‐based VQIM‐type watermarking using audio fingerprint (AFP) is proposed to enhance the performance. The parameter values of VQIM are essential for audio quality and robustness, which are determined as individual codebook parameters. The parameters are estimated using AFP in the watermark detection process. In simulations, the effectiveness of the method was examined to show its robustness to watermark attacks. The audio quality was evaluated based on PEAQ.
Monitoring odour of heated extra‐virgin olive oils from Arbequina and Manzanilla cultivars using an electronic nose
Authors: Messina Valeria , Sancho Ana , Walsöe de Reca Noemi 
Published: February 2015

It is known that fats and oils, when submitted to prolonged heat, are subjected to a series of chemical–physical modifications, generating changes in sensory and nutritional characteristics. The aim of the present research was to develop an accurate and repeatable method to predict appearance of undesired odour when extra‐virgin olive oils from Arbequina and Manzanilla are submitted to heating processes, using an electronic nose. Among the metal oxide sensor response (electronic nose) an odour index was performed. Emissions of several volatile organic compounds released during the process were analysed by SPME‐Gas chromatography. Linear discriminant analysis was applied on the sensor response; it was found that among eight sensors, four sensors were more specific for detecting release of volatile organic compounds during the heating process. The Mahalanobis distance method was adopted to create an odour index and was correlated with emissions of n‐pentanal, n‐hexanal, n‐heptanal and n‐nonanal. Data showed that the methodology accurately and rapidly predicted changes in odour pattern between cultivars.Practical applications: Changes in odour pattern of different cultivars of extra‐virgin olive oil subjected to heating processes can be performed quickly and easily by applying electronic nose. Appearance of undesired odour due to thermo‐oxidation can be detected applying an odour index based on the metal oxide sensors response. High correlations can be observed when linear regressions are applied to odour index and volatile compounds (VOCs) content. New markers of oxidation can be obtained applying this methodology. Electronic nose instruments are attractive for a number of significant features: the relatively fast assessment of headspace, a quantitative representation or signature of a gas and cheap sensors which can be easily integrated to quality control. The motivation of the present research was to incorporate metal oxide sensors in electronic nose as a useful tool to analyse the odour pattern and quality of different products.An odour index was performed using a metal oxide sensors signal. Linear regressions were performed with emissions of several volatile compounds, assessing content and odour index to predict appearance of undesired odour in extra‐virgin olive oil.
Lewis‐Acid‐Catalysed Tandem Meinwald Rearrangement/Intermolecular [3+2]‐Cycloaddition of Epoxides with Donor–Acceptor Cyclopropanes: Synthesis of Functionalized Tetrahydrofurans
Authors: Kumar Pandey Ashok , Ghosh Asit , Banerjee Prabal 
Published: February 2015

AbstractA Lewis‐acid‐catalysed tandem Meinwald rearrangement/[3+2]‐cycloaddition of epoxides with donor–acceptor cyclopropanes to synthesize varieties of cis‐2,5‐aryl‐benzyl‐substituted tetrahydrofurans is described. An enantioselective version of the same transformation was achieved using an InCl3–PyBOX catalyst system.
Synthesis of Condensed Tetrahydroisoquinoline Class of Alkaloids by Employing TfOH‐Mediated Imide Carbonyl Activation
Authors: Selvakumar Jayaraman , Rao Ramana Sreenivasa , Srinivasapriyan Vijayan , Marutheeswaran Srinivasan , Ramanathan Chinnasamy Ramaraj 
Published: February 2015

AbstractIsoquinoline‐based polycyclic lactams such as isoindoloisoquinolinones, pyrroloisoquinolinones, and benzo[a]quinolizinones were successfully assembled from the corresponding imides by using a TfOH‐mediated (TfOH = trifluoromethanesulfonic acid) imide carbonyl activation and cyclization strategy. By employing this simple method, the isoquinoline alkaloids crispine A, trolline/oleracein E, and erythrinarbine were successfully synthesized in racemic form. The reaction of unsymmetrical N‐phenethylphthalimides with TfOH displayed excellent regioselectivity, which was rationalized by DFT calculations.
Stimuli‐Responsive Cyclopenta[ef]heptalenes: Synthesis and Optical Properties
Authors: Ghazvini Zadeh Ebrahim H. , Woodward Adam W. , Richardson David , Bondar Mykhailo. V. , Belfield Kevin D. 
Published: February 2015

AbstractWe report the one‐pot synthesis, 1D and 2D NMR characterization, and UV/Vis study of a series of cyclopenta[ef]heptalenes 4a–c that exhibit strong stimuli‐responsive behavior, with a tunable energy gap as a result of perturbation of HOMO, LUMO, and LUMO+1 energies upon doping/dedoping with TFA/Et3N. The approach employed allows for the extension of conjugation at C‐4 of the cyclopenta[ef]heptalene skeleton from X = H (4a) to X = CN (4b) and X = 2‐thiophenyl (4c), resulting in longer absorption maxima and smaller optical energy gaps of the cyclopenta[ef]heptalenium cations 4a–c+. Additionally, in the presence of a UV‐activated (< 300 nm) photoacid generator (PAG), protonation of 4c can be indirectly achieved by intermolecular photoinduced electron transfer (PeT) from the excited state of 4c to the PAG, upon which the latter undergoes photodecomposition resulting in the generation of acid. This phenomenon facilitates the use of cyclopenta[ef]heptalenes 4a–c as visible sensitizers of commercial PAGs.