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Unlocking Lewis acidity via the redox non-innocence of a phenothiazine-substituted borane
We describe a new approach to enhancing Lewis acidity, through the single electron oxidation of a borane with a pendant phenothiazine. This results in the formation of a persistent radical cation with increased electrophilicity. Computational and experimental studies indicate this radical cation significantly enhances the Lewis acidity and catalytic activity compared to its neutral analog. These results illustrate the viability of this approach in turning on the Lewis acidity of relatively inert boranes.PMID:38586997 | DOI:10.1039/d4cc01059k (Source: Chemical Communications)
Source: Chemical Communications - April 8, 2024 Category: Chemistry Authors: Taylor P L Cosby Avik Bhattacharjee Samantha K Henneberry Jesse LeBlanc Christopher B Caputo Source Type: research

Iodine-mediated oxidative triple functionalization of indolines with azoles and diazonium salts
We report an innovative synthetic strategy for the generation of polysubstituted indoles from indolines, aryldiazonium salts, and azoles. The methodology encompasses an electrophilic substitution reaction affording C5-indoline intermediates which undergo an iodine-mediated oxidative transformation coupled with C-H functionalization to yield the indole derivatives.PMID:38587256 | DOI:10.1039/d4cc00856a (Source: Chemical Communications)
Source: Chemical Communications - April 8, 2024 Category: Chemistry Authors: Yifeng Liu Xiaoting Gu Xiaoxiang Zhang Meilan Xu Zhuan Zhang Taoyuan Liang Source Type: research

Photoredox-catalyzed carbonylative acylation of styrenes with Hantzsch esters
Chem Commun (Camb). 2024 Apr 8. doi: 10.1039/d4cc01293c. Online ahead of print.ABSTRACTKetones exist widely in naturally occurring products and are indispensable building blocks in organic synthesis. Carbonylation represents one of the most straightforward methods for ketone preparation and has become an attractive field in modern organic chemistry as well. Among the strategies, photocatalytic carbonylation is also worthy of further exploration. Herein, we developed a three-component carbonylation that provides a new method for the synthesis of ketones from Hantzsch esters, CO and styrenes. The reaction was performed under...
Source: Chemical Communications - April 8, 2024 Category: Chemistry Authors: Qiangwei Li Le-Cheng Wang Zhi-Peng Bao Xiao-Feng Wu Source Type: research

From nano- to macroarchitectures: designing and constructing MOF-derived porous materials for persulfate-based advanced oxidation processes
Chem Commun (Camb). 2024 Apr 8. doi: 10.1039/d4cc00433g. Online ahead of print.ABSTRACTPersulfate-based advanced oxidation processes (PS-AOPs) have gained significant attention as an effective approach for the elimination of emerging organic contaminants (EOCs) in water treatment. Metal-organic frameworks (MOFs) and their derivatives are regarded as promising catalysts for activating peroxydisulfate (PDS) and peroxymonosulfate (PMS) due to their tunable and diverse structure and composition. By the rational nanoarchitectured design of MOF-derived nanomaterials, the excellent performance and customized functions can be achi...
Source: Chemical Communications - April 8, 2024 Category: Chemistry Authors: Chengming Xiao Xin Guo Jiansheng Li Source Type: research

A bioetching-induced visualized-organic photoelectrochemical transistor dual-signal mode sensor for alkaline phosphatase detection
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d4cc01174k. Online ahead of print.ABSTRACTA study of an integrated OPECT biosensor gate and the EC color-changing region on the same chip was carried out, achieving sensitive detection through bioetching-induced signal changes. Enzymatic bioetching enables specific alkaline phosphatase (ALP) detection by catalyzing the production of CdS, which modulates the channel current and generates a visual signal.PMID:38576349 | DOI:10.1039/d4cc01174k (Source: Chemical Communications)
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Cunhao Fan Jingjie Lai Xilong Zhou Yuanhao Liu Zhiying Shao Kezuo Di Fuheng You Lijun Ding Kun Wang Source Type: research

Creation of a boron carbide-based Ti 3 AlBC (312) MAX phase: a route to novel MXenes for energy storage
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d4cc00660g. Online ahead of print.ABSTRACTA novel boron carbide (B4C)-based Ti3AlBC (312) MAX phase was predicted for the first time via density functional theory (DFT). The stability of the MAX phase was confirmed by mechanical and thermal property analyses. The computational details revealed the attractive properties of Ti3AlBC, indicating its potential as an advanced material with improved characteristics. Its thermodynamic properties are reported as a function of temperature, indicating its potential for energy storage applications.PMID:38576405 | DOI:10.1039/d4cc00660g (Sou...
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Md Shahinoor Alam Mohammad Asaduzzaman Chowdhury Md Rasidul Islam Md Saiful Islam Md Moynul Islam Razu Ahmed Source Type: research

Engineering mechanical compliance in polymers and composites for the design of smart flexible sensors
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d4cc00938j. Online ahead of print.ABSTRACTPolymers are one of the most popular materials for next-generation flexible sensing device fabrication due to their tunable mechanical and electrical properties. A series of prior research studies in the field of smart flexible and wearable sensing illustrates the potential of various polymer and composite materials to be applied in sensor development. In this direction, mechanical compliance plays a vital role as it ensures the stability and reliability of the fabricated sensor. Therefore, engineering mechanical compliance for the devel...
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Shivank Sahu Kamalesh Tripathy Mitradip Bhattacharjee Deepak Chopra Source Type: research

Halide-free CO 2 cycloaddition onto styrene oxide catalysed by first row transition-metal derivatives of polyoxotungstates
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d4cc00522h. Online ahead of print.ABSTRACTQuaternary ammonium salts of metal derivatives of polyoxometalates [XW11O39M(H2O)]n- (X = P, Si; M = Cr, Mn, Co, Ni, Zn) were successfully tested instead of quaternary ammonium halides as catalysts in the cycloaddition of CO2 to styrene oxide. Remarkably, they gave very satisfactory yields of styrene carbonate at moderate temperature (80 °C).PMID:38577743 | DOI:10.1039/d4cc00522h (Source: Chemical Communications)
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Jingjing Ren Anna Proust Franck Launay Richard Villanneau Source Type: research

Copper(I)-free syntheses of [ 11 C/ 18 F]trifluoromethyl ketones from alkyl or aryl esters and [ 11 C/ 18 F]fluoroform
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d4cc00465e. Online ahead of print.ABSTRACTHerein, we report a copper(I)-free method for labeling the trifluoroacetyl group with positron-emitting carbon-11 (t1/2 = 20.4 min) or fluorine-18 (t1/2 = 109.8 min) as part of our exploration of radiolabeled fluoroforms to access new radiolabeled chemotypes of interest for tracer development. Treatment of alkyl esters and aryl esters, containing electron-donating or electron-withdrawing groups, with [11C/18F]fluoroform in the presence of strong base, gave [11C/18F]trifluoromethyl ketones as novel radiolabeling synthons in moderate to hi...
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Susovan Jana Sanjay Telu Jimmy E Jakobsson Bo Yeun Yang Victor W Pike Source Type: research

Acceleration of hydrolytic ring opening of N7-alkylguanine by the terminal carbamoyl group of glycidamide
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d3cc04997c. Online ahead of print.ABSTRACTHydrolytic ring opening of guanine N7-adducts with compounds containing an oxacyclopropane ring, namely glycidamide, glycidol and 1,2-epoxybutane, was analyzed, and the reaction of the glycidamide adduct was the fastest. The differences in the reaction rates were confirmed by theoretical calculations.PMID:38577847 | DOI:10.1039/d3cc04997c (Source: Chemical Communications)
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Shigenori Iwai Yuta Hayashi Tomohiro Baba Yasutaka Kitagawa Source Type: research

FEN1-assisted DNA logic amplifier circuit for fast and compact DNA computing
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d4cc00203b. Online ahead of print.ABSTRACTThis work developed DNA amplifier logic gates (AND-OR, OR-AND, FAN-IN, FAN-OUT, and 4-bit square-root circuits) using a flap endonuclease 1 (FEN1)-catalyzed signal amplification reaction, for the fastest and compact DNA computing. Moreover, the logic circuit can use input strands with concentrations of less than 1 nM, which is more than 100 times lower than the input concentration of other DNA logic circuits, providing a promising methodology for constructing fast and compact DNA computations.PMID:38577866 | DOI:10.1039/d4cc00203b (Sourc...
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Zheng Xiang Jia-Yi Zheng Xueping Ma Yanan Chu Qinxin Song Guohua Zhou Bingjie Zou Haiping Wu Chen Wang Source Type: research

Highly substituted benzo[ b ]furan synthesis through substituent migration
Chem Commun (Camb). 2024 Apr 5. doi: 10.1039/d4cc01192a. Online ahead of print.ABSTRACTAn unusual benzofuran synthesis from 2,6-disubstituted phenols and alkynyl sulfoxides is disclosed. Various highly substituted benzofurans were synthesized via the charge-accelerated [3,3]-sigmatropic rearrangement and subsequent substituent migration. Multiaryl-substituted benzofurans and fully substituted benzofurans were prepared on the basis of the unique reaction mechanism.PMID:38578172 | DOI:10.1039/d4cc01192a (Source: Chemical Communications)
Source: Chemical Communications - April 5, 2024 Category: Chemistry Authors: Akihiro Kobayashi Shinya Tabata Suguru Yoshida Source Type: research