☆ 4.7 Article

Multi-component reactions involving group 6 Fischer carbene complexes: a source of inspiration for future catalytic transformations

CHEMICAL COMMUNICATIONS (2010)

期刊

CHEMICAL COMMUNICATIONS

卷 46, 期 41, 页码 7670-7687

出版社

ROYAL SOC CHEMISTRY

DOI: 10.1039/c0cc02337j

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Chemistry, Multidisciplinary

资金

Ministerio de Ciencia y Tecnologia (Spain) [CTQ2007-61048, CTQ2009-09949]
Principado de Asturias [IB08-088]

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摘要

The ability of heteroatom stabilized Fischer carbene complexes (FCCs) to participate in multicomponent reactions (MCRs) has become a characteristic of such organometallics, particularly of chromium carbenes. This feature article updates the main results in this field during the last lustrum, highlighting the ability of FCCs for the construction of densely functionalized frameworks, mainly through the successive incorporation of unsaturated moieties (alkynes, CO ligands, ... ) in a sequential manner. Examples where up to seven components are coupled will be presented.

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Review Chemistry, Multidisciplinary

Trap suppression in ordered organic photovoltaic heterojunctions

Dan He, Yawen Li, Fuwen Zhao, Yuze Lin

Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.

CHEMICAL COMMUNICATIONS (2024)

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Review Chemistry, Multidisciplinary

Controversial mechanism of simultaneous photocatalysis and Fenton-based processes: additional effect or synergy?

Olivier Monfort, Arshitha Madhusudhan, Martin Motola

Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Polymerization of monomer aggregates for tailoring and patterning water wettability

Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna

Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Pd/Brønsted acid catalysed intramolecular N-allylation of indoles and pyrroles with alkynes for the synthesis of N-fused heterocycles

Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi

Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Rh(III)-catalyzed selective mono- and dual-functionalization/cyclization of 1-aryl-5-aminopyrazoles with iodonium ylides

Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang

Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Modified minimal-size fragments of heparan sulfate as inhibitors of endosulfatase-2 (Sulf-2)

Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell

Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Reductive cyclodimerization of chalcones: exploring the self-adaptability of galvanostatic electrosynthesis

Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini

Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Rh(III)-catalyzed oxidative [4+2] annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols

Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar

Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

PbTeB4O9: a lead tellurium borate with unprecedented fundamental building block [B4O10] and large birefringence

Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan

Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Wafer-scale synthesis of two-dimensional ultrathin films

Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal

Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.

CHEMICAL COMMUNICATIONS (2024)

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Article Chemistry, Multidisciplinary

Precise design of copolymer-conjugated nanocatalysts for active electron transfer

Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi

Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.

CHEMICAL COMMUNICATIONS (2024)

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