Nonheme binuclear transition metal complexes with hydrosulfide and polychalcogenides
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00929k. Online ahead of print.ABSTRACTThe intriguing chemistry of chalcogen (S, Se)-containing ligands and their capability to bridge multiple metal centres have resulted in a plethora of reports on transition metal complexes featuring hydrosulfide (HS-) and polychalcogenides (En2-, E = S, Se). While a large number of such molecules are strictly organometallic complexes, examples of non-organometallic complexes featuring HS- and En2- with N-/O-donor ligands are relatively rare. The general synthetic procedure for the transition metal-hydrosulfido complexes involves the reac...
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Kamal Hossain Sayan Atta Anuj Baran Chakraborty Soumik Karmakar Amit Majumdar Source Type: research
Mechanoresponsive luminescence triggered by phase transition of a supercooled copper(I) complex
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00815d. Online ahead of print.ABSTRACTUnder mechanical stimulation, a copper(I) complex in its supercooled liquid state transforms into a crystalline phase, showing a dramatic emission color change from red to green that is accompanied by a 20-fold increase in the photoluminescence quantum yield up to 87%. This reversible phase transition relies on the intriguing ability of this copper complex to form a supercooled metastable state.PMID:38654619 | DOI:10.1039/d4cc00815d (Source: Chemical Communications)
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: J érémy Delafoulhouze Marie Cordier Jean-Yves Mevellec Florian Massuyeau Olivier Hernandez Camille Latouche Sandrine Perruchas Source Type: research
Cascade ring expansion reactions for the synthesis of medium-sized rings and macrocycles
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc01303d. Online ahead of print.ABSTRACTThis Feature Article discusses recent advances in the development of cascade ring expansion reactions for the synthesis of medium-sized rings and macrocycles. Cascade ring expansion reactions have much potential for use in the synthesis of biologically important medium-sized rings and macrocycles, most notably as they don't require high dilution conditions, which are commonly used in established end-to-end macrocyclisation methods. Operation by cascade ring expansion method can allow large ring products to be accessed via rearrangements...
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Jack M Wootton Jerry K F Tam William P Unsworth Source Type: research
Self-assembled tetrazine cryptophane for ion pair recognition and guest release by cage disassembly
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc01421a. Online ahead of print.ABSTRACTHereby, we describe the synthesis of a self-assembled syn-cryptophane using dynamic nucleophilic aromatic substitution of tetrazines. 1H NMR cage titrations reveal that the tetramethylammonium cation binds under slow exchange conditions while counter-anions show a fast exchange regime. Finally, the cryptophane can be disassembled by the addition of thiols allowing guest release.PMID:38656223 | DOI:10.1039/d4cc01421a (Source: Chemical Communications)
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Louise Miton Elise Antonetti Marie Poujade Jean-Pierre Dutasta Paola Nava Alexandre Martinez Yoann Cotelle Source Type: research
A two carbon homologation of Friedel-Crafts alkylation enabled by photochemical alkene stitching: modular assembly of cyclolignans
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00957f. Online ahead of print.ABSTRACTHerein we report an efficient two-carbon homologated variant of Friedel-Crafts alkylation via photochemical radical alkene stitching. Readily available feedstock alkenes are used as bridges between photogenerated alkyl radicals and arenes, opening a route to γ-aryl-carbonyls for chemo-divergent access to aryltetralone and γ-lactones, a gateway to 2,7'-cyclolignans.PMID:38656305 | DOI:10.1039/d4cc00957f (Source: Chemical Communications)
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Shyamal Pramanik Apurba Samanta Soumitra Maity Source Type: research
Advances in the structural engineering of layered bismuth-based semiconductors for visible light-driven photocatalytic water splitting
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00455h. Online ahead of print.ABSTRACTHydrogen production via the photocatalytic water splitting reaction on semiconductors presents a promising avenue to directly achieve solar energy conversion and storage. Bismuth-based semiconductors with layered structures, a hierarchical arrangement of components stacked in the form of two-dimensional extended layers where the atoms within each layer are typically strongly bonded, while the interactions between the layers are relatively weak, have emerged as an important series of photocatalyst candidates. In this review, we focus on ...
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Xiaoping Tao Xiaoyuan Zhou Rengui Li Source Type: research
Nonheme binuclear transition metal complexes with hydrosulfide and polychalcogenides
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00929k. Online ahead of print.ABSTRACTThe intriguing chemistry of chalcogen (S, Se)-containing ligands and their capability to bridge multiple metal centres have resulted in a plethora of reports on transition metal complexes featuring hydrosulfide (HS-) and polychalcogenides (En2-, E = S, Se). While a large number of such molecules are strictly organometallic complexes, examples of non-organometallic complexes featuring HS- and En2- with N-/O-donor ligands are relatively rare. The general synthetic procedure for the transition metal-hydrosulfido complexes involves the reac...
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Kamal Hossain Sayan Atta Anuj Baran Chakraborty Soumik Karmakar Amit Majumdar Source Type: research
Mechanoresponsive luminescence triggered by phase transition of a supercooled copper(I) complex
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00815d. Online ahead of print.ABSTRACTUnder mechanical stimulation, a copper(I) complex in its supercooled liquid state transforms into a crystalline phase, showing a dramatic emission color change from red to green that is accompanied by a 20-fold increase in the photoluminescence quantum yield up to 87%. This reversible phase transition relies on the intriguing ability of this copper complex to form a supercooled metastable state.PMID:38654619 | DOI:10.1039/d4cc00815d (Source: Chemical Communications)
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: J érémy Delafoulhouze Marie Cordier Jean-Yves Mevellec Florian Massuyeau Olivier Hernandez Camille Latouche Sandrine Perruchas Source Type: research
Cascade ring expansion reactions for the synthesis of medium-sized rings and macrocycles
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc01303d. Online ahead of print.ABSTRACTThis Feature Article discusses recent advances in the development of cascade ring expansion reactions for the synthesis of medium-sized rings and macrocycles. Cascade ring expansion reactions have much potential for use in the synthesis of biologically important medium-sized rings and macrocycles, most notably as they don't require high dilution conditions, which are commonly used in established end-to-end macrocyclisation methods. Operation by cascade ring expansion method can allow large ring products to be accessed via rearrangements...
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Jack M Wootton Jerry K F Tam William P Unsworth Source Type: research
Self-assembled tetrazine cryptophane for ion pair recognition and guest release by cage disassembly
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc01421a. Online ahead of print.ABSTRACTHereby, we describe the synthesis of a self-assembled syn-cryptophane using dynamic nucleophilic aromatic substitution of tetrazines. 1H NMR cage titrations reveal that the tetramethylammonium cation binds under slow exchange conditions while counter-anions show a fast exchange regime. Finally, the cryptophane can be disassembled by the addition of thiols allowing guest release.PMID:38656223 | DOI:10.1039/d4cc01421a (Source: Chemical Communications)
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Louise Miton Elise Antonetti Marie Poujade Jean-Pierre Dutasta Paola Nava Alexandre Martinez Yoann Cotelle Source Type: research
A two carbon homologation of Friedel-Crafts alkylation enabled by photochemical alkene stitching: modular assembly of cyclolignans
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00957f. Online ahead of print.ABSTRACTHerein we report an efficient two-carbon homologated variant of Friedel-Crafts alkylation via photochemical radical alkene stitching. Readily available feedstock alkenes are used as bridges between photogenerated alkyl radicals and arenes, opening a route to γ-aryl-carbonyls for chemo-divergent access to aryltetralone and γ-lactones, a gateway to 2,7'-cyclolignans.PMID:38656305 | DOI:10.1039/d4cc00957f (Source: Chemical Communications)
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Shyamal Pramanik Apurba Samanta Soumitra Maity Source Type: research
Advances in the structural engineering of layered bismuth-based semiconductors for visible light-driven photocatalytic water splitting
Chem Commun (Camb). 2024 Apr 24. doi: 10.1039/d4cc00455h. Online ahead of print.ABSTRACTHydrogen production via the photocatalytic water splitting reaction on semiconductors presents a promising avenue to directly achieve solar energy conversion and storage. Bismuth-based semiconductors with layered structures, a hierarchical arrangement of components stacked in the form of two-dimensional extended layers where the atoms within each layer are typically strongly bonded, while the interactions between the layers are relatively weak, have emerged as an important series of photocatalyst candidates. In this review, we focus on ...
Source: Chemical Communications - April 24, 2024 Category: Chemistry Authors: Xiaoping Tao Xiaoyuan Zhou Rengui Li Source Type: research
C-H arylation of thiopyran derivatives with aryl halides
Chem Commun (Camb). 2024 Apr 23. doi: 10.1039/d4cc00719k. Online ahead of print.ABSTRACTA C-H arylation of thiopyran derivatives with aryl halides has been developed. Under the catalysis of Pd(OAc)2/Ag2CO3, the C-H arylation takes place at the α-position of the thiopyran ring. When dibromo-substituted compounds are used as reactants, double C-H arylations may occur on the same thiopyran ring at its α- and β-positions.PMID:38650584 | DOI:10.1039/d4cc00719k (Source: Chemical Communications)
Source: Chemical Communications - April 23, 2024 Category: Chemistry Authors: Yangzhe Su Min Wang Jianping Xu Weinan Chen Gang Zhou Source Type: research
Correction: A closer look at ligand specificity for cellular activation of NOD2 with synthetic muramyl dipeptide analogues
Chem Commun (Camb). 2024 Apr 23. doi: 10.1039/d4cc90145b. Online ahead of print.ABSTRACTCorrection for 'A closer look at ligand specificity for cellular activation of NOD2 with synthetic muramyl dipeptide analogues' by Christopher Adamson et al., Chem. Commun., 2024, 60, 2212-2215, https://doi.org/10.1039/D3CC05807G.PMID:38651255 | DOI:10.1039/d4cc90145b (Source: Chemical Communications)
Source: Chemical Communications - April 23, 2024 Category: Chemistry Authors: Christopher Adamson Yaquan Liang Shiliu Feng Allan Wee Ren Ng Yuan Qiao Source Type: research
Chemical control of CRISPR/Cpf1 editing < em > via < /em > orthogonal activation and deactivation of crosslinked crRNA
Chem Commun (Camb). 2024 Apr 23. doi: 10.1039/d4cc01106f. Online ahead of print.ABSTRACTThrough the integration of CRISPR/Cpf1 with optogenetics and a reduction-responsive motif, we have developed a photoactivatable cross-linked crRNA that enables precise genome editing upon light exposure. This system also allows for termination of editing activity through external application of reducing agent. The dual-stimuli-responsive CRISPR/Cpf1 editing process operates in a unique OFF → ON → OFF sequence, making it a valuable tool for investigating time-sensitive biological events.PMID:38651297 | DOI:10.1039/d4cc01106f (Source:...
Source: Chemical Communications - April 23, 2024 Category: Chemistry Authors: Cui-Lian Lin Wen-Da Chen Li Liu Liang Cheng Source Type: research
