Köring, Laura Sitte, Nikolai A Bursch, Markus Grimme, Stefan Paradies, Jan
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
The metal-free catalytic hydrogenation of secondary carboxylic acid amides is developed. The reduction is realized by two new catalytic reactions. First, the amide is converted into the imidoyl chloride by triphosgene (CO(OCCl3 )2 ) using novel phosphorus(V) catalysts. Second, the in situ generated imidoyl chlorides are hydrogenated in high yields ...
Förstel, Marko Pollow, Kai Studemund, Taarna Dopfer, Otto
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
Au2 + is a simple but crucial model system for understanding the diverse catalytic activity of gold. While the Au2 + ground state (X2 Σg + ) is understood reasonably well from mass spectrometry and computations, no spectroscopic information is available for its first excited state (A2 Σu + ). Herein, we present the vibrationally resolved electronic...
Eisenburger, Lucien Weippert, Valentin Oeckler, Oliver Schnick, Wolfgang
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
Multinary transition metal nitrides and oxonitrides are a versatile and intriguing class of compounds. However, in comparison to pure oxides, they are much less investigated. The compounds Sc 5 P 12 N 23 O 3 and Ti 5 P 12 N 24 O 2 were now synthesized from the binary nitrides ScN and TiN, respectively, following a high-pressure high-temperature app...
Wang, Lichao Xu, Lian Su, Bingmei Lin, Wei Xu, Xinqi Lin, Juan
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
l-Threonine aldolase from Actinocorallia herbida (AhLTA) is an ideal catalyst for producing l-threo-4-methylsulfonylphenylserine [(2S,3R)-1 b], a key chiral precursor for florfenicol and thiamphenicol. The moderate Cβ stereoselectivity is the main obstacle to the industrial application of AhLTA. To address this issue, a combinatorial active-site sa...
Duan, Ying-Chen Pan, Qing-Qing Zhao, Zhi-Wen Gao, Ying Wu, Yong Zhao, Liang Geng, Yun Zhang, Min Su, Zhong-Min
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
Quantum mechanical and molecular dynamics simulations have been carried out on a series of anthracene-o-carborane derivatives (ANT-H, ANT-Ph, ANT-Me and ANT-TMS) with rare red-light emission in the solid state. The simulation of the heating process of the crystals and further comparison of the molecular structures and excited-state properties befor...
Hagiwara, Kenta Horikoshi, Satoshi Serpone, Nick
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
A number of synthetic methodologies and applications of carbon quantum dots (CQDs) have been reported since they were first discovered nearly two decades ago. Unlike metal-based or semiconductor-based (e. g., metal chalcogenides) quantum dots (MSQDs), CQDs have the unique feature of being prepared through a variety of synthetic protocols, which are...
Feng, Ruilin Qi, Yanlong Liu, Shijun Cui, Long Dai, Quanquan Bai, Chenxi
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
Catalyst deactivation is a problem of great concern for many heterogeneous reactions. Here, an urchin-like LaPO4 catalyst was easily developed for pentane-2,3-diol dehydration; it has an impressive ability to restore the activity in situ by itself during the reaction, accounting for its high stability. This facilitates the efficient production of r...
Chen, Zi-Jian Huang, Zhicheng Sun, Yuan-Ming Xu, Zhen-Lin Liu, Juewen
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
Oxidase-mimicking nanozymes are more desirable than peroxidase-mimicking ones since H2 O2 can be omitted. However, only a few nanomaterials are known for oxidase-like activities. In this work, we compared the activity of Mn2 O3 , Mn3 O4 and MnO2 and found that Mn2 O3 had the highest oxidase activity. Interestingly, the activity of Mn2 O3 was even i...
You, Zi-Xin Wang, Chen Xiao, Yao Guan, Qing-Lin Li, Jin-Xiao Xing, Yong-Heng Gao, Hong-Wei Sun, Li-Xian Bai, Feng-Ying
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
Photoresponsive materials are a key part of the age of smart technology that have potential in a broad range of applications. Coordination networks (CNs) are widely used due to their designability and stability. In this work, three novel alkaline earth metal coordination networks (AEM-CNs): [Mg(CMNDI)(H2 O)2 ], [Ca(CMNDI)(H2 O)2 ]⋅H2 O, and [Sr(CMN...
Zhuo, Youzhen Wang, Xiuxiu Chen, Si Chen, Hang Ouyang, Jie Yang, Liulin Wang, Xinchang You, Lei Utz, Marcel Tian, Zhongqun
...
Published in
Chemistry (Weinheim an der Bergstrasse, Germany)
Quantitatively predicting the reactivity of dynamic covalent reaction is essential to understand and rationally design complex structures and reaction networks. Herein, the reactivity of aldehydes and amines in various rapid imine formation in aqueous solution by microfluidic NMR spectroscopy was quantified. Investigation of reaction kinetics allow...
