The present work describes the first visible light-assisted, metal-free and organic base 1,1,3,3-tetramethyl guanidine (TMG) mediated synthesis of unsymmetrical methyl aryl/alkyl carbonates from the reaction of alcohols, methanol, and CO in high to excellent yields under atmospheric pressure and ambient temperature conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d1cc05833a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthesis and Chiroptical Activity of π-Expanded Electron-rich Heterohelicenes Based on the 1,4-Dihydropyrrolo[3,2-b]pyrrole core.
Chemistry
January 2025
Institute of Organic Chemistry PAS: Instytut Chemii Organicznej Polskiej Akademii Nauk, Institute of Organic Chemistry, Kasprzaka 44/52, 01-224, Warsaw, POLAND.
Herein, we report the synthesis and chiroptical characteristics of the first (double) helicenes possesing the 1,4-dihydropyrrolo[3,2-b]pyrrole (DHPP) moiety as their central core. We have developed a three-step synthesis with 6π-electrocyclization accompanied with HBr elimination as its key step. We found that, whereas for smaller periphereal arms double 6π-electrocyclization occurs smoothly forming a double helicene, in the case of longer policyclic aromatic hydrocarbons the reaction becomes less efficient and mono-helicenes are the only products.
View Article and Find Full Text PDFCBr4-Catalyzed Substituent-Dependent Michael Addition/Paal-Knorr Cyclization of Indole with α,β-Unsaturated Ketones.
Chem Asian J
January 2025
National Institute of Technology Warangal, Department of Chemistry, Hanamkonda, 506004, Warangal, INDIA.
We report CBr4 catalyzed Michael addition of indole to α,β-unsaturated ketones for the synthesis of β-indolylketones through halogen bonding catalysis. This reaction is compatible with a diverse range of chalcones, including drug-derived chalcones containing sensitive functional groups such as amides, yielding the addition products in good yields. Additionally, 3-indolyl furanoid motifs have been synthesized through the Michael addition followed by Paal-Knorr cyclization by utilizing various unsymmetrical 1,4-enediones in a one-pot process with good yields.
View Article and Find Full Text PDFMechanochemistry: Unravelling the Impact of Metal Leaching in Organic Synthesis.
ChemSusChem
January 2025
Universita degli study di cagliari, Dipartimento di Scienze Chimiche e Geologiche, Cittadella Universitaria, SS 554 bivio per Sestu, 09042, Monserrato, ITALY.
Solvent-free techniques have gained considerable attention in recent years due to their environmental advantages and potential to enable chemical reactivities beyond the reach of traditional solution-based methods. Mechanochemistry has emerged as a groundbreaking approach to drive sustainable chemical processes. Despite its promise, some challenges still need to be explored, including the overlooked issue of material leaching during grinding, a phenomenon in which components from milling media or reaction vessels, such as stainless steel, unintentionally alter reaction outcomes.
View Article and Find Full Text PDFUnilateral and Bilateral Disulfurating Reagents for the Synthesis of Unsymmetrical Polysulfides.
Chemistry
January 2025
East China Normal University, Shanghai Key Laboratory of Green Chemistry and Chemical Process, 3663 North Zhongshan Road, 200062, Shanghai, CHINA.
Polysulfides play an essential role across a variety of fields, including life sciences, pharmaceuticals, food science, and materials science. However, the controlled sequential installation of groups at both ends of an S-S motif poses enormous challenges due to the reversible nature of the covalent S-S bond. The application of unique disulfide reagents presents one of the most straightforward approaches for constructing diverse polysulfides.
View Article and Find Full Text PDFRetraction: Light-induced synthesis of unsymmetrical organic carbonates from alcohols, methanol and CO under ambient conditions.
Chem Commun (Camb)
January 2025
Chemical & Material Sciences Division, CSIR-Indian Institute of Petroleum, Haridwar Road, Mohkampur, Dehradun-248005, India.
Retraction of 'Light-induced synthesis of unsymmetrical organic carbonates from alcohols, methanol and CO under ambient conditions' by Sandhya Saini , , 2021, , 12800-12803, https://doi.org/10.1039/D1CC05833A.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!