Results 91 to 100 of about 74,560 (387)

Hydrolyzable Bio‐Based Bisphenols Enabled by the Tishchenko Reaction for Polyurethane Vitrimers with Closed‐Loop Recyclability

Advanced Science, EarlyView.
This study employs the Tishchenko coupling reaction to obtain bio‐based bisphenols containing degradable ester bonds with 100% atom utilization. Based on these bio‐based bisphenols, a fully bio‐based polyurethane Covalent Adaptable Networks are constructed, while simultaneously endowing the material with closed‐loop recyclability, degradability, and ...
Jiewen Wang, Hongru Qiang, Rong Huang, Dan Zhao, Zihan Tong, Zhen Fan, Jianzhong Du, Yunqing Zhu   +7 more
wiley   +1 more source

Access to N‐Monofluoromethylated (Thio)Carbamates, Formamides, Alkynamides, and Related Derivatives

Angewandte Chemie, EarlyView.
The first general synthetic access to N‐CH₂F and N‐CHRF carbamates, thiocarbamates, formamides, alkynamides, and related compounds is disclosed. The method involves the direct synthesis of carbamoyl fluoride building blocks from readily available amines, followed by their derivatization. Abstract This work presents the first general synthetic access to
Filip G. Zivkovic, Fritz Bahns, Che‐Ming Hsu, Franziska Schoenebeck   +3 more
wiley   +2 more sources

Silica sulfuric acid: a versatile and reusable heterogeneous catalyst for the synthesis of N-acyl carbamates and oxazolidinones under solvent-free conditions [PDF]

, 2011
Silica sulfuric acid catalyzes efficiently the reaction of carbamates and oxazolidinones with anhydrides under solvent-free conditions. All the reactions were done at room temperature and the N-acyl carbamates and oxazolidinones were obtained with high ...
Wu, Liqiang, Yan, Fulin, Yang, Xiaojuan
core   +2 more sources

Sulfonyl Azides as Precursors in Ligand-Free Palladium-Catalyzed Synthesis of Sulfonyl Carbamates and Sulfonyl Ureas and Synthesis of Sulfonamides.

Journal of Organic Chemistry, 2016
An efficient synthesis of sulfonyl carbamates and sulfonyl ureas from sulfonyl azides employing a palladium-catalyzed carbonylation protocol has been developed. Using a two-chamber system, sulfonyl azides, PdCl2, and CO gas, released ex situ from Mo(CO)6,
Shiao Y Chow, Marc Y. Stevens, Luke R. Odell   +2 more
semanticscholar   +1 more source

Bioinspired Liquid‐Free Ion‐Conductive Elastomers with Ultrahigh Mechanical Strength and Excellent Ionic Conductivity for Multifunctional Flexible Sensing Applications

Advanced Science, EarlyView.
⁻Inspired by the “brick wall” structure of pearl layer, FLICE‐110% liquid‐free ionic conductive elastomer had high mechanical strength (5.46 MPa), excellent ionic conductivity (3.29 × 10−4 S cm−1) and resilience. It can be used in smart music boxes, airplane wings and control manipulators.
Zequan Li, Jingjing Tang, Xuwei Wang, Fuqi Wang, Fangyan Ou, Wenyu Pan, Changsheng Wang, Ting Xie, Chuang Ning, Xiwei Xu, Jiamin Liu, Qihua Liang, Wei Gao, Shuangliang Zhao   +13 more
wiley   +1 more source

Advances in the Release of Amide-Containing Molecules. [PDF]

Chemistry
The ability to release a molecule from a larger construct in a controlled manner is of great importance to produce effective prodrugs, antibody‐drug conjugates, and chemical probes. Amides are ubiquitous functional groups, yet methods to utilise them as molecular release handles are seldom reported.
Wharton T, Spring DR.
europepmc   +2 more sources

Experimental hut evaluation of bednets treated with an organophosphate (chlorpyrifos-methyl) or a pyrethroid (lambdacyhalothrin) alone and in combination against insecticide-resistant Anopheles gambiae and Culex quinquefasciatus mosquitoes [PDF]

, 2005
BACKGROUND: Pyrethroid resistant mosquitoes are becoming increasingly common in parts of Africa. It is important to identify alternative insecticides which, if necessary, could be used to replace or supplement the pyrethroids for use on treated nets ...
Asidi, Alex N, Chandre, Fabrice, Corbel, Vincent, Curtis, Christopher F, Darriet, Frédéric, Hougard, Jean-Marc, Koffi, Alphonsine A, N' Guessan, Raphael, Rowland, Mark W, Zaim, Morteza   +9 more
core   +4 more sources

Dynamic Bonds Reinforced Polyamide Elastomer for Biomedical Orthosis

Advanced Science, EarlyView.
A dynamic bonds (DBs) reinforced shape memory polyamide elastomer is developed using reactive extrusion. Dynamic covalent networks enhance interlayer adhesion in 4D‐printed objects by utilizing the combined effects of multiple DBs, reducing mechanical anisotropy and improving the mechanical and shape memory properties.
Zhen Li, Peiyao Yan, Hao Wang, Yuancheng Zhang, Junhua Kong, Wei Zhao, Xin Li, Xiaomeng Zhang, Zhe Cui, Peng Fu, Xinchang Pang, Minying Liu, Chaobin He   +12 more
wiley   +1 more source

Recent developments in the Suzuki-Miyaura reaction: 2010-2014 [PDF]

, 2015
The Suzuki-Miyaura reaction (SMR), involving the coupling of an organoboron reagent and an organic halide or pseudo-halide in the presence of a palladium or nickel catalyst and a base, has arguably become one of most utilized tools for the construction ...
Maluenda, Irene, Navarro, Oscar
core   +2 more sources

Evaluation of Clinical and Laboratory Prognostic Risk Factors in Organophosphate or Carbamate-Poisoned Pediatric Patients

Eurasian Journal of Emergency Medicine, 2021
Aim:We aimed to determine the clinical and demographic features of pediatric patients monitored at our hospital after organophosphate or carbamate intoxication.
Mehmet Açıkgöz
doaj   +1 more source