bluuebunny/crossref_metadata_2025_split huggingface dataset:
Molecular spectroscopic studies on the interactions of rhein and emodin with thioglycolic acid‐capped core/shell CdTe/CdS quantum dots and their analytical applications
Authors: Li Dan , Liu Shaopu , Shen Yizhong , Yang Jidong , He Youqiu 
Published: May 2014

AbstractWater‐soluble thioglycolic acid (TGA)‐capped core/shell CdTe/CdS quantum dots (QDs) were synthesized. The interactions of rhein and emodin with TGA‐CdTe/CdS QDs were evaluated by fluorescence and ultraviolet‐visible absorption spectroscopy. Experimental results showed that the high fluorescence intensity of TGA‐CdTe/CdS QDs could be effectively quenched in the presence of rhein (or emodin) at 570 nm, which may have resulted from an electron transfer process from excited TGA‐CdTe/CdS QDs to rhein (or emodin). The quenching intensity was in proportion to the concentration of both rhein and emodin in a certain range. Under optimized conditions, the linear ranges of TGA‐CdTe/CdS QDs fluorescence intensity versus the concentration of rhein and emodin were 0.09650–60 µg/mL and 0.1175–70 µg/mL with a correlation coefficient of 0.9984 and 0.9965, respectively. The corresponding detection limits (3σ/S) of rhein and emodin were 28.9 and 35.2 ng/mL, respectively. This proposed method was applied to determine rhein and emodin in human urine samples successfully with remarkable advantages such as high sensitivity, short analysis time, low cost and easy operation. Based on this, a simple, rapid and highly sensitive method to determine rhein (or emodin) was proposed. Copyright © 2014 John Wiley & Sons, Ltd.
Tunable white light emission from single‐phased Li2SrSiO4:Dy3+ phosphors by co‐doping with Eu3+
Authors: Zhang Zhi‐Wei , Shen Xi‐Hai , Peng You‐Shun , Ren Yan‐Jun , Mao Zhi‐Yong 
Published: May 2014

AbstractA series of single‐phase full‐color emitting Li2Sr1−x−ySiO4:xDy3+,yEu3+ phosphors were synthesized by solid‐state reaction and characterized by X‐ray diffraction and photoluminescence analyses. The samples showed emission peaks at 488 nm (blue), 572 nm (yellow), 592 nm (orange) and 617 nm (red) under 393 nm excitation. The photoluminescence excitation spectra, comprising the Eu–O charge transfer band and 4f–4f transition bands of Dy3+ and Eu3+, range from 200 to 500 nm. The Commission Internationale de I'Eclairage chromaticity coordinates for Li2Sr0.98−xSiO4:0.02Dy3+,xEu3+ phosphors were simulated. By manipulating Eu3+ and Dy3+ concentrations, the color points of Li2Sr1−x−ySiO4:xDy3+,yEu3+ were tuned from the greenish‐white region to white light and eventually to reddish‐white region, demonstrating that a tunable white light can be obtained by Li2Sr1−x−ySiO4:xDy3+,yEu3+ phosphors. Li2Sr0.98−xSiO4:0.02Dy3+, xEu3+ can serve as a white‐light‐emitting phosphor for phosphor‐converted light‐emitting diode. Copyright © 2014 John Wiley & Sons, Ltd.
Application of silver nanoparticles to the chemiluminescence determination of cefditoren pivoxil using the luminol–ferricyanide system
Authors: Alarfaj Nawal A. , Aly Fatma A. , El‐Tohamy Maha F. 
Published: May 2014

AbstractA new simple, accurate and sensitive sequential injection analysis chemiluminescence (CL) detection method for the determination of cefditoren pivoxil (CTP) has been developed. The developed method was based on the enhancement effect of silver nanoparticles on the CL signal arising from a luminol–potassium ferricyanide reaction in the presence of CTP. The optimum conditions relevant to the effect of luminol, potassium ferricyanide and silver nanoparticle concentrations were investigated. The proposed method showed linear relationships between relative CL intensity and the investigated drug concentration at the range 0.001–5000 ng/mL, (r = 0.9998, n = 12) with a detection limit of 0.5 pg/mL and quantification limit of 0.001 ng/mL. The relative standard deviation was 1.6%. The proposed method was employed for the determination of CTP in bulk drug, in its pharmaceutical dosage forms and biological fluids such as human serum and urine. The interference of some common additive compounds such as glucose, lactose, starch, talc and magnesium stearate was investigated. In addition, the interference of some related cephalosporins was tested. No interference was recorded. The obtained sequential injection analysis‐CL results were statistically compared with those from a reported method and did not show any significant differences. Copyright © 2014 John Wiley & Sons, Ltd.
Characterization of interactions between methoxatin disodium salt and human serum albumin by pressure‐assisted capillary electrophoresis/frontal analysis and circular dichroism spectroscopy
Authors: Zhao Lijuan , Chen Dongying 
Published: May 2014

AbstractPressure‐assisted capillary electrophoresis (PACE)/frontal analysis (FA) and circular dichroism spectroscopy were utilized to investigate the interactions between methoxatin disodium salt (PQQ‐2Na) and human serum albumin (HSA). With the PACE/FA method, sodium phosphate buffer solution (67 mm, pH 7.4) was used as the background electrolyte. Hydrodynamic injection at 50 mbar for 50 s and external pressure of 50 mbar were applied. The binding constant and the number of primary binding sites to HSA were obtained under fixed concentration of PQQ‐2Na (100 µm) and increasing HSA concentration (0~475 µm). The thermodynamic parameters characterized the main acting forces of hydrophobic and electrostatic interactions. The displacement experiments using phenylbutazone and flurbiprofen as ligand markers suggested that the binding site was the Sudlow site I of the HSA molecule. Circular dichroism spectroscopy was further employed to evaluate the conformation changes of HSA under the interaction of PQQ‐2Na. This work provides comprehensive information for understanding the interactions between PQQ‐2Na and HSA. Copyright © 2014 John Wiley & Sons, Ltd.
The Moderating Effect of Within‐Group Similarity on Change in a Strengths‐Based Programme for Incarcerated Young Men
Authors: Viola Wendy Elaine , Mankowski Eric S. , Gray Mary Elisabeth 
Published: May 2014

AbstractMany youth who are incarcerated within juvenile correctional facilities experience mental health disorders, histories of victimization and suicide ideation. Strengths‐based intervention programmes are intended to enhance participants' resilience against such challenges. However, little is known about how the composition of intervention groups contributes to programmes' efficacy. This study addresses the impact of within‐group similarity on the success of a strengths‐based intervention for incarcerated young men (n = 141). Similarity was assessed in terms of self‐reported demographics and behaviours and belief systems. Youths' masculine ideology, caring and cooperative behaviours, ethnic pride and respect for differences, self‐efficacy regarding education and non‐violence, and attitudes about criminal behaviour were measured before and after intervention. Results indicate that participants' caring and cooperative behaviour increased during the intervention. However, their education‐related self‐efficacy was reduced, and the perceived benefits of criminal activity increased. These changes were moderated by group composition: less similarity between participants and their group members was associated with less negative change. In the context of juvenile corrections facilities, where staying the same may be a relatively positive outcome, perhaps the more relevant question is not which processes and characteristics of others better enable youth to change but which experiences help them retain positive aspects of themselves. Copyright © 2014 John Wiley & Sons, Ltd.
ChemInform Abstract: Synthesis, Crystal Structure, and Vibrational Spectra of the Anhydrous Lithium Dicyanamide Li[N(CN)2].
Authors: Reckeweg Olaf , DiSalvo Francis J. , Schulz Armin , Blaschkowski Bjoern , Jagiella Stefan , Schleid Thomas 
Published: May 2014

AbstractCrystals of Li[N(CN)2] are synthesized by a metathesis reaction of stoichiometric amounts of aqueous solutions of Na[N(CN)2] and Li2[SO4] followed by subsequent treatment with EtOH and evaporation at 80 °C.
ChemInform Abstract: Wet Chemical Synthesis of Eu2+ Activated Fluoro‐Elpasolite Phosphors.
Authors: Singh Vartika S. , Joshi C. P. , Muthal P. L. , Dhopte S. M. , Moharil S. V. 
Published: May 2014

AbstractNon‐doped and Eu‐doped K2NaAlF6 and K2LiAlF6 are precipitated by addition of HF to stoichiometric aqueous solutions of alkali chlorides, AlCl3, and EuCl3 at 85 °C.
ChemInform Abstract: Preparation and Crystal Structure of Ba4MgF2(CN2)4.
Authors: Olive Corral Anna , Kubus Mariusz , Stroebele Markus , Meyer H.‐Juergen 
Published: May 2014

AbstractThe new carbodiimide of title is prepared by solid state metathesis reaction of MgF2, BaF2, and Na2(CN2) (fused Cu ampoule, 650 °C, 2 d).
ChemInform Abstract: Synthesis of the Bicyclo[6.2.1]undecane Ring System by a Solvent‐Free Diels—Alder Reaction.
Authors: Beatriz Adilson , da Silva Gomes Roberto , Gomes Constantino Mauricio , da Silva Gil Valdo Jose , de Oliveira Kleber Thiago 
Published: May 2014

AbstractA bicyclo[6.2.1]undecane model compound (VI) of the core structure of the biologically active furanoheliangolide sesquiterpene is synthesized.
ChemInform Abstract: Scandium Pentafluorobenzoate‐Catalyzed Unexpected Cascade Reaction of 2‐Aminobenzaldehydes with Primary Amines: A Process for the Preparation of Ring‐Fused Aminals.
Authors: Mao Dan , Tang Jun , Wang Wenbo , Wu Shengying , Liu Xin , Yu Jianjun , Wang Limin 
Published: May 2014

AbstractThe coupling with aromatic amines results in formation of a new class of polycyclic aminals of type (III).
ChemInform Abstract: Tunable, Chemoselective Amination via Silver Catalysis.
Authors: Rigoli Jared W. , Weatherly Cale D. , Alderson Juliet M. , Vo Brian T. , Schomaker Jennifer M. 
Published: May 2014

AbstractA chemoselective amination of homoallylic and homoallenic carbamates solely through control of the catalyst/ligand ratio is reported.
ChemInform Abstract: Raising the pKa Limit of “Soft” Nucleophiles in Palladium‐Catalyzed Allylic Substitutions: Application of Diarylmethane Pronucleophiles.
Authors: Sha Sheng‐Chun , Zhang Jiadi , Carroll Patrick J. , Walsh Patrick J. 
Published: May 2014

AbstractA general method for the Pd‐catalyzed allylic substitution with diarylmethane derivatives is reported.
ChemInform Abstract: Tandem Isomerization/Hydroformylation/Hydrogenation of Internal Alkenes to n‐Alcohols Using Rh/Ru Dual‐ or Ternary‐Catalyst Systems.
Authors: Yuki Yamato , Takahashi Kohei , Tanaka Yoshiyuki , Nozaki Kyoko 
Published: May 2014

AbstractA one‐pot three‐step reaction, isomerization/hydroformylation/hydrogenation of internal alkenes to n‐alcohols, is accomplished by employing a Rh/Ru dual‐catalyst system.
ChemInform Abstract: Selective Esterification of the Polyphenol Resveratrol at the 4′‐Position.
Authors: Acerson Mark J. , Andrus Merritt B. 
Published: May 2014

AbstractSelective 4′‐esterification of the polyphenol resveratrol succeeds under thermodynamic conditions using acid anhydrides, DMSO as solvent, and usually NaH as base.
ChemInform Abstract: An Efficient Palladium‐Catalyzed C—H Alkoxylation of Unactivated Methylene and Methyl Groups with Cyclic Hypervalent Iodine (I3+) Oxidants.
Authors: Shan Gang , Yang Xinglin , Zong Yu , Rao Yu 
Published: May 2014

AbstractThis novel title method gives access to a wide range of C(sp3)‐H alkoxylation products with excellent regioselectivity and with high yields.
ChemInform Abstract: Aqueous Phase Hydrogenation of Levulinic Acid to 1,4‐Pentanediol.
Authors: Li Mengxia , Li Guangyi , Li Ning , Wang Aiqin , Dong Wenjun , Wang Xiaodong , Cong Yu 
Published: May 2014

AbstractThe selective hydrogenation of levulic acid is investigated by screening Mo‐modified noble metal‐SiO2 catalysts at low temperature (80 °C) under aqueous solutions.
ChemInform Abstract: Selective α‐Amination and α‐Acylation of Esters and Amides via Dual Reactivity of O‐Acylhydroxylamines Toward Zinc Enolates.
Authors: McDonald Stacey L. , Wang Qiu 
Published: May 2014

AbstractTreatment of zinc enolates with O‐acylhydroxylamines in the presence of a copper catalyst provides α‐amination products exclusively [cf.
ChemInform Abstract: Chemoenzymatic Routes to Polyoxygenated Cyclooctenones Related to the Eastern Hemisphere of the Macrolactam Tripartilactam.
Authors: Vo Yen , Banwell Martin G. , Willis Anthony C. 
Published: May 2014

AbstractReaction sequences are reported to synthesize eight‐membered carbocycles such as (IV), starting from the enzymatically‐derived enantiopure cis‐diol (I).
ChemInform Abstract: RuII‐Catalyzed Vinylative Dearomatization of Naphthols via a C(sp2)—H Bond Activation Approach.
Authors: Nan Jiang , Zuo Zhijun , Luo Lei , Bai Lu , Zheng Huayu , Yuan Yini , Liu Jingjing , Luan Xinjun , Wang Yaoyu 
Published: May 2014

AbstractIntermolecular annulation reactions of 1‐aryl‐2‐naphthols with internal alkynes proceed efficiently in the presence of a Ru catalyst and a Cu oxidant to generate spirocyclic compounds by sequential cleavage of the C(sp2)—H bond, migratory insertion of the alkyne, and dearomatization of the naphthyl ring.
ChemInform Abstract: Enantioselective Photoredox Catalysis Enabled by Proton‐Coupled Electron Transfer: Development of an Asymmetric Aza‐Pinacol Cyclization.
Authors: Rono Lydia J. , Yayla Hatice G. , Wang David Y. , Armstrong Michael F. , Knowles Robert R. 
Published: May 2014

AbstractThe method is the first example of the highly enantioselective reductive coupling of ketones and hydrazones reported to date.
ChemInform Abstract: Advances in Siloxane‐Based Coupling Reactions: Novel 16‐Electron Palladium(0) Tri‐Alkene Catalysts for Allyl‐Aryl Coupling in Precursors to Amaryllidaceae Alkaloids.
Authors: DeShong Philip , Nytko Frederick E. , Shukla Krupa H. 
Published: May 2014

AbstractSeveral palladium(0) complexes, e.g. compounds (I), are tested as catalysts in the coupling of allylic carbonate (II) with phenyl siloxane (III).
ChemInform Abstract: Enantioselective Synthesis of Spirooxindoles via Direct Catalytic Asymmetric Aldol‐Type Reaction of Isothiocyanato Oxindoles.
Authors: Matsunaga Shigeki , Kato Shota , Kanai Motomu 
Published: May 2014

AbstractTitle synthesis of spirooxindoles is efficiently catalyzed by nickel— or strontium—Schiff base complexes, respectively.
ChemInform Abstract: Catalytic and Asymmetric Fluorolactonizations of Carboxylic Acids Through Anion Phase Transfer.
Authors: Parmar Dixit , Maji Modhu Sudan , Rueping Magnus 
Published: May 2014

AbstractThe title reaction proceeds under weak phase transfer condition (Na2CO3), which allows the use of the non‐polar solvents (Et2O, hexane).
ChemInform Abstract: Asymmetric Synthesis of Tertiary 2‐Substituted 5‐Oxotetrahydrofuran‐2‐carboxylic Acids.
Authors: Lopp Margus , Paju Anne , Oja Karolin , Matkevits Katharina , Lumi Priit , Jaerving Ivar , Pehk Tonis 
Published: May 2014

AbstractThe applied catalytic process proceeds with slightly lower yield and stereoselectivity than the corresponding stoichiometric reaction.
ChemInform Abstract: I2‐Catalyzed Synthesis of Substituted Pyrroles from α‐Amino Carbonyl Compounds and Aldehydes.
Authors: Yan Rulong , Kang Xing , Zhou Xiaoqiang , Li Xiaoni , Liu Xingxing , Xiang Likui , Li Yamin , Huang Guosheng 
Published: May 2014

AbstractA direct method for the synthesis of 1,3,4‐trisubstituted pyrroles is achieved easily from cyclization of α‐anilino carbonyl compounds and aldehydes catalyzed by iodine.
ChemInform Abstract: Synthesis of Asymmetrically Substituted Terpyridines by Palladium‐Catalyzed Direct C—H Arylation of Pyridine N‐Oxides.
Authors: Duric Sasa , Sypaseuth Fanni D. , Hoof Santina , Svensson Emma , Tzschucke C. Christoph 
Published: May 2014

AbstractThe convenient and scalable synthesis of the title compounds is accomplished in fewer steps compared to known cross‐coupling methods.
ChemInform Abstract: Microwave‐Assisted, Rhodium(III)‐Catalyzed N‐Annulation Reactions of Aryl and α,β‐Unsaturated Ketones with Alkynes.
Authors: Lee Hyejeong , Sim Yong‐Kyun , Park Jung‐Woo , Jun Chul‐Ho 
Published: May 2014

AbstractThe title process leads to isoquinolines and pyridines from corresponding aromatic ketones [e.g. (I)] and enones [e.g. (XV)], respectively.
ChemInform Abstract: Syntheses of Fused Tetracyclic Quinolines via Ugi‐Variant MCR and Pd‐Catalyzed Bis‐Annulation.
Authors: Che Chao , Yang Bo , Jiang Xianlong , Shao Taofeng , Yu Zhixiong , Tao Chuanye , Li Song , Lin Shuo 
Published: May 2014

AbstractA diversity‐oriented synthesis of fused tetracyclic 6,11‐dihydroquinoxalino[2,3‐b]quinolines is described via sequential Ugi‐variant multicomponent reaction and Pd‐catalyzed bis‐annulation in a one‐pot process.
ChemInform Abstract: Transition‐Metal‐Free Reactions of Boronic Acids: 1,3‐Stereochemical Induction in the Substrate‐Controlled Conjugate Addition.
Authors: Roscales Silvia , Ortega Victor , Csaky Aurelio G. 
Published: May 2014

AbstractIn the presence of TFAA enones (I) react with alkenylboronic acids and trifluoroborates to afford dioxabicyclooctanes with excellent stereoselectivity.
ChemInform Abstract: Modular Hemisyntheses of Boronato‐ and Trifluoroborato‐Substituted L‐NHBoc Amino Acid and Peptide Derivatives.
Authors: Audi Hassib , Remond Emmanuelle , Eymin Marie‐Joelle , Tessier Arnaud , Malacea‐Kabbara Raluca , Juge Sylvain 
Published: May 2014

AbstractModular hemisyntheses of boronato‐ and trifluoroborato‐substituted amino acid derivatives are achieved based on the reaction of Wittig reagent (I) with aldehydes followed by Ir‐catalyzed boronation.
ChemInform Abstract: Synthesis and Reactions of 1,3,4‐Selenadiazines.
Authors: Langer Peter , Pfeiffer Wolf‐Diethard , Rossberg Harald , Kelzhanova Nazken , Villinger Alexander , Saginayev Amanzhan T. 
Published: May 2014

AbstractThe cyclization of selenosemicarbazides (I) and (VI) with phenacyl bromides (II) leads to desired 1,3,4‐selenadiazines (III) and (VII), respectively.
ChemInform Abstract: Synthesis of Enantiopure 2‐C‐Glycosyl‐3‐nitrochromenes.
Authors: Soengas Raquel G. , Rodriguez‐Solla Humberto , Silva Artur M. S. , Llavona Ricardo , Almeida Paz Filipe A. 
Published: May 2014

AbstractA new and highly stereoselective route to biologically important title compounds is described.
ChemInform Abstract: (+)‐ and (‐)‐Cajanusine, a Pair of New Enantiomeric Stilbene Dimers with a New Skeleton from the Leaves of Cajanus cajan.
Authors: Li Yao‐Lan , et al. et al. 
Published: May 2014

AbstractBoth enantiomers exhibit inhibitory activities on the growth of hepatocellular carcinoma cells.
ChemInform Abstract: Colloidal Synthesis of an Exotic Phase of Silicon: The BC8 Structure.
Authors: Ganguly Shreyashi , Kazem Nasrin , Carter Danielle , Kauzlarich Susan M. 
Published: May 2014

AbstractOctanol capped silicon nanoparticles crystallizing in the metastable BC8 structure are prepared by a colloidal route from mixtures of SiI4, n‐butyllithium, dioctylether, and 1‐octanol (280 °C, 72 h, 25—35% yield).
ChemInform Abstract: Synthesis of Bi2Te3 Urchin‐Like Nanorods by a Microwave—Solvothermal Method.
Authors: Jiang Ya , Zeng Wei , Fang Yi 
Published: May 2014

AbstractBi2Te3 nanospheres with diameters of 50—500 nm are prepared by microwave‐heating of poly(ethylene glycol) solutions containing Bi(NO3)3, TeO2, and aqueous HNO3 (autoclave, 1.2 MPa, 180 °C, 15 min).
ChemInform Abstract: All‐Carbon Quaternary Stereogenic Centers in Acyclic Systems Through the Creation of Several C—C Bonds per Chemical Step.
Authors: Marek Ilan , Minko Yury , Pasco Morgane , Mejuch Tom , Gilboa Noga , Chechik Helena , Das Jaya P. 
Published: May 2014

AbstractReview: [89 refs.
ChemInform Abstract: Intramolecular Diels—Alder Reaction as a Key Step in Tandem or Sequential Processes: A Versatile Tool for the Synthesis of Fused and Bridged Bicyclic or Polycyclic Compounds
Authors: Parvatkar Prakash T. , Kadam Hari K. , Tilve Santosh G. 
Published: May 2014

AbstractReview: [98 refs.
Bioorganic Research of Galactites tomentosa Moench. Honey Extracts: Enantiomeric Purity of Chiral Marker 3‐Phenyllactic Acid
Authors: Jerković Igor , Roje Marin , Tuberoso Carlo I. G. , Marijanović Zvonimir , Kasum Ana , Obradović Marina 
Published: May 2014

ABSTRACTThistle (Galactites tomentosa Moench.) honey organic extracts were obtained by headspace solid‐phase microextraction (HS‐SPME) and ultrasonic solvent extraction (USE) and analyzed by gas chromatography (GC‐FID and GC‐MS) for the first time. Most abundant headspace compounds were terpenes, particularly linalool derivatives (hotrienol was predominant with a range of 38.6–57.5%). 3‐Phenyllactic acid dominated in the solvent extracts (77.4–86.4%) followed by minor percentages of other shikimate pathway derivatives. After determination of an adequate enantioseparation protocol on Chirallica PST‐4 column, the honey solvent extracts were analyzed by high‐performance liquid chromatography (HPLC). The chiral analysis revealed high enantiomeric excess (>95%) of (–)‐3‐phenyllactic acid in all samples. Therefore, previous findings of chemical markers of thistle honey were extended, providing new potential for advanced chemical fingerprinting (optical pure chemical marker). Chirality 26:405–410, 2014. © 2014 Wiley Periodicals, Inc.
Green Recyclable CuO‐CeO2 Nanocomposite Catalyzed Amination of Aryl Halides with Aqueous Ammonia in Water
Authors: Albadi Jalal , Mansournezhad Azam 
Published: May 2014

AbstractCuO‐CeO2 nanocomposite as a green recyclable catalyst, catalyzed amination of aryl halides with aqueous ammonia in water. This catalyst can be easily recovered by simple filtration and recycled up to 5 consecutive runs with consistent activity. The procedure provides some advantages such as simple work‐up, clean procedure, relatively short reaction times and high yields of the products.
Facile Synthesis of 4‐H‐Pyran Derivatives Bearing Indole Skeleton via [3+3] Cyclization of 3‐Indolyl‐3‐oxopropanenitriles with Dialkyl Acetylenedicarboxylates and Isocyanides
Authors: Song Ping , Zhao Lili , Ji Shunjun 
Published: May 2014

AbstractAn efficient multicomponent reaction of 3‐indolyl‐3‐oxopropanenitriles with dialkyl acetylenedicarboxylates and isocyanides under mild conditions leading to highly functionalized 6‐(indol‐3‐yl)‐4H‐pyrans in moderate to good yields has been developed.
Evidence for a Bulky Unit of a Pillar[5]arene Flipping in the Solid State
Authors: Pan Mingguang , Xue Min 
Published: May 2014

AbstractIt is well known that pillar[5]arenes have two most stable conformations (pS and pR) in their crystal structures. Because of the intramolecular H‐bonding interactions, substituents, temperature, solvent and so on, the rotational behaviors of the phenolic units on pillararenes are also common. This paper showed some other kinds of conformations in the functionalized pillar[5]arenes and gave evidence for a bulky unit (1,4‐methoxycarbonylmethoxybenzene unit) flipping in the solid state. The presence of hydrogen bonding facilitated the intermolecular self‐assembly in terms of energy‐minimized packing in the crystals. Thus, the main driving force for the flipping of this bulky unit might be both the intramolecular hydrogen bonding between the phenolic units on pillararenes and quadrupolar hydrogen bonding between the host and water. This paper helps us to have a better understanding on the conformations of pillar[5]arenes.