Results 121 to 130 of about 124,782 (320)

Ligand‐Engineered Metal–Organic Frameworks of 3D Infinite Trinuclear Zinc Units for Photocatalytic Monooxygenation of Sulfenamides

Advanced Science, EarlyView.
The rarely investigated metal–organic frameworks (MOFs) of 3D infinite trinuclear zinc units are designed and synthesized. Through controllable programming of ligands, their Lewis acidity and photoactivity are fine‐tuned to enable these MOFs as promising catalysts for the cycloaddition of CO2 and photocatalytic monooxygenation of sulfenamides and ...
Xinglei He, Chunlong Yu, Fengtao Zhang, Chenxu Gong, Jingheng Li, Ding‐Bo Zeng, Bin Zhao, Xiong Chen, Ke‐Yin Ye   +8 more
wiley   +1 more source

Automated Iterative N─C and C─C Bond Formation

Angewandte Chemie, EarlyView.
Automated iterative assembly of MIDA or TIDA boronate building blocks enables generalized and automated preparation of many different types of small functional molecules in a modular fashion. However, until now, this engine could not leverage nitrogen atoms as iteration handles, excluding molecules rich in N─C and C─C bonds.
Theodore Tyrikos‐Ergas, Sevasti Agiakloglou, Antonio J. LaPorte, Wesley Wang, Chieh‐Kai Chan, Clare E. Wells, Christopher K. Rakowski, Rachel I. Hammond, Jia Qiu, Jonathan D. Raymond, Tiago Vieira, John Limanto, Marc N. Feiglin, Daniel J. Blair, Martin D. Burke   +14 more
wiley   +2 more sources

Analysis of Salicylic Acid and Benzoic Acid [PDF]

Journal of AOAC INTERNATIONAL, 1965
Abstract Salicylic and benzoic acids can be separated on a ferric chloride-urea column. Salicylic acid is retained; benzoic acid is trapped on a Celite:1N sodium bicarbonate column; other phenolic compounds are eluted from both columns.
openaire   +1 more source

Sustainable Electrochemical Strategy for Selective Double Bond Oxidation in the Presence of Aldehyde Groups with Mo─N─O Catalysts

Advanced Science, EarlyView.
In this work, an electrochemical strategy employing hydroperoxyl radicals and a molybdenum‐based catalyst (Mo─N─O) enables selective double‐bond oxidation in cinnamaldehyde, preserving aldehyde integrity. Under mild, energy‐efficient conditions (−200 mA), this approach converts cinnamaldehyde to benzaldehyde with complete conversion (100%) and >99 ...
Zhirong Li, Xun Zhang, Jiao Liu, Zhaomin Hao, Tengfei Zhang, Yang Yang, Yitong Wang, Santhosh Kamaraj, Jianrong Zeng, Qingsong Dong, Cuiping Zhai, Wuping Liao, Shuyan Song   +12 more
wiley   +1 more source

Determination of Level of Food Additives in Labisia Pumila (LP) Beverages Consumed in Kuantan, Malaysia [PDF]

, 2012
The content levels of several food additives (gallic acid, benzoic acid and caffeine) in commercial Labisia pumila (LP) beverage samples in Kuantan, Malaysia were determined by high performances liquid chromatography (HPLC). These analytical measurements
Iwansyah, A. C. (Ade), Kormin, F. (Faridah), Yusoff, M. M. (Masithah)   +2 more
core  

π‐Electron Donation at the Sulfoximidoyl Nitrogen Atom

Angewandte Chemie, EarlyView.
Density functional theory (DFT)‐based evidence for a strong positive mesomeric effect (+M‐effect) of the sulfoximidoyl group at N is presented. Our findings contrast with common characterizations of the sulfoximidoyl group as an exclusively electron‐withdrawing moiety.
Benjamin J. Statham, Florian F. Mulks, Carsten Bolm   +2 more
wiley   +2 more sources

CsPbBr3 Perovskite‐Based Heterostructures in Photocatalysis: Mechanisms, Stability, and Multifunctional Performance

Advanced Science, EarlyView.
This review synthesizes breakthroughs in CsPbBr3 heterostructure photocatalysis: 1) Mechanistic insights on band alignment engineering (Type‐II/Z/S‐scheme) for suppressed charge recombination; 2) Stabilization strategies via interfacial encapsulation and defect passivation overcoming hydrolysis; 3) Multifunctional design principles enabling efficient ...
Kuanxin Lv, Zhenzhen Li, Xing Huang, Zetong Cheng, Zhongyan Wang, Hang Zhao   +5 more
wiley   +1 more source

Interference of endogenous benzoic acid with the signatures of sulfonic acid derivatives and carbohydrates in fermented dairy products

Fundamental Research
Endogenous benzoic acid causes detrimental effects on public health, but the underlying mechanisms often remain elusive. Benzoic acid (0.00–40.00 mg L−1) was detected from sixty fermented goat milk samples in six replicates, indicating the existence of ...
Wei Jia, Xin Wang, Lin Shi
doaj  

2,4-DIHYDROXYBENZOYLTETRACHLORO-o-BENZOIC ACID AND 2,3,4-TRICHLORO-6-HYDROXYXANTHONE-1-CARBOXYLIC ACID AND SOME OF THEIR DERIVATIVES. [PDF]

, 1918
W. R. Orndorff, W. A. Adamson
openalex   +1 more source

Phase Transition in Halide Double Perovskites for Solar‐To‐Chemical Energy Conversion

Advanced Energy Materials, EarlyView.
Disorder‐to‐order phase transition in double perovskite Cs2AgBiBr6 eliminates self‐trapped excitons and antisite defects and promotes charge separation, with over sixfold photoactivity enhancement in photocatalytic C−H bond activation. Abstract Halide double perovskites have recently garnered significant interest in solar energy conversion applications
Chunhua Wang, Zhirun Xie, Pengshan Xie, Huiqiang Liang, Yang Ding, Yannan Wang, Michael K.H. Leung, Guosong Zeng, Johnny C. Ho, Sateesh Bandaru, Ning Han, Bao‐Lian Su, Yun Hau Ng   +12 more
wiley   +1 more source