A practical and switchable method for the synthesis of aryl sulfones and sulfoxides via sulfide oxidation was developed. The chemoselectivities of products were simply controlled by reaction temperature using O/air as the terminal oxidant and oxygen source. The broad substrate scope, easy realization of gram-scale production, and the simplification of a sulfide oxidation system render the strategy attractive and valuable.
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http://dx.doi.org/10.1021/acs.orglett.9b03192 | DOI Listing |
Sci Rep
January 2025
Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India.
Magnesium (Mg) an essential plant nutrient is widespread deficient in the acidic soils of Nilgiris of Tamil nadu, India. The vegetable yield and quality is especially affected due to deficiency of nutrients like Mg. This study investigates soil characteristics and bacterial diversity in the Nilgiris district of Tamil Nadu, India, with respect to Mg deficiency.
View Article and Find Full Text PDFChemistry
January 2025
Central University of Gujarat, School of Chemical Sciences, Sector 30, 382030, Gandhinagar, INDIA.
The selective synthesis of 4-alkyl/aryl-3H-1,2-dithiole-3-thione in THF and water-dependent switchable product ketothioamide is demonstrated. The presented method describes explicitly the synthesis of the extremely rare positional isomer 4-alkyl/aryl-3H-1,2-dithiole-3-thione, a unique structure distinct from another positional isomer, 5-alkyl/aryl-3H-1,2-dithiole-3-thione. The unique umpolung of the nitromethyl group is exploited for solvent selective nucleophilic sulfur and amine addition.
View Article and Find Full Text PDFJ Org Chem
January 2025
Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India.
We have developed efficacious routes toward the selective synthesis of two classes of compounds such as C-3 amino-methylated indoles and 4-indol-3-yl-methylanilines from the same precursors, namely, indoles and 1,3,5-triazinanes. It is reported that the controlled cleavage of 1,3,5-triazinanes can be effected by heat for the generation of aryl imine motifs, and we observed that the presence of Lewis acid influences the course of these transformations toward different products. The reaction toward indol-3-yl-methylanilines proceeds via a nucleophilic attack of indole to the aryl imine generated from the 1,3,5-triazinanes to form an amino-methylated product which undergoes a Lewis acid mediated Hofmann-Martius-type rearrangement.
View Article and Find Full Text PDFOrg Lett
January 2025
Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
A palladium-catalyzed Catellani-type [2+2+2] annulation reaction of aryl iodides, bromothiophenes, and norbornadiene, which proceeds via a tandem Heck coupling/double C-H bond activation and retro-Diels-Alder pathway to access thiophene-fused polyaromatics, is reported. The key feature of this protocol represents a NBD/NBE retaining annulation.
View Article and Find Full Text PDFOrg Biomol Chem
January 2025
Department of Chemistry, IIT Bombay, Powai, Mumbai 400076, India.
[16]Thiatriphyrin(2.2.1)s containing one thiophene and two pyrroles connected five -carbons were synthesized by condensing a new precursor, -fused thiatripyrrane, with an appropriate aryl aldehyde in CHCl under acid-catalyzed inert conditions followed by open air oxidation with DDQ.
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