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A divergent reaction of isocyanides with -bromobenzaldehydes for the synthesis of isoindolinone-derived ketenimines and lactams was disclosed. The reaction features readily available reactants, relatively mild conditions, and high yields of products. Ketenimines could be applied in further transformations for access to other functional molecules. A mechanism study showed that the palladium-migration/imine-insertion process was the key step in this reaction.
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http://dx.doi.org/10.1021/acs.orglett.1c02422 | DOI Listing |
Plant Physiol Biochem
August 2025
School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China. Electronic address:
The PR10 (Pathogenesis-Related Protein 10) family plays a crucial role in plant defense and growth regulation, with unique hydrophobic cavities that bind various ligands, including phytohormones and alkaloids. Among them, Norcoclaurine Synthases (NCS) are key enzymes in benzylisoquinoline alkaloid (BIAs) biosynthesis, catalyzing the Pictet-Spengler reaction to form the precursor (S)-norcoclaurine. However, the evolutionary origins and functions of the PR10 family in BIA biosynthesis remain unclear.
View Article and Find Full Text PDFZhonghua Jie He He Hu Xi Za Zhi
September 2025
Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210009, China.
Severe pneumonia, as a critical and prevalent condition of the respiratory system, poses a significant threat to patient survival and health outcomes. This article focuses on the similarities and differences between community-acquired pneumonia (CAP) and hospital-acquired pneumonia (HAP)/ventilator-associated pneumonia (VAP). There is significant divergence in the predominant pathogens between severe community-acquired pneumonia (SCAP) and HAP/VAP.
View Article and Find Full Text PDFOrg Lett
September 2025
School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning 530004, China.
Vinylphosphonates serve as crucial components in synthetic chemistry, medicinal chemistry, and materials science. However, traditional synthetic methods for these compounds typically require the use of noble metal catalysts and hazardous reagents. Herein, we report a metal-free strategy for the divergent synthesis of vinylphosphonates through the P nucleophilic addition of vinylidene -quinone methides (-VQMs).
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States.
Diversity-oriented synthesis (DOS) has emerged as an efficient strategy for constructing diverse compound libraries, facilitating hit or lead identification in the drug discovery process. In parallel, developing diverse transformations at different sites is an appealing strategy to expand the diversity of appendages on scaffolds. Owing to the availability of C-H bonds at multiple sites of pharmacophores, diversity-oriented C-H activation reactions are an ideal approach to realize this goal.
View Article and Find Full Text PDFChem Sci
August 2025
College of Chemistry and Chemical Engineering, Jiangxi Province Engineering Research Center of Ecological Chemical Industry, Jiujiang University Jiujiang 332005 China
BN-fused aromatic compounds have garnered significant attention due to their unique electronic structures and exceptional photophysical properties, positioning them as highly promising candidates for applications in organic optoelectronics. However, the regioselective synthesis of BN isomers remains a formidable challenge, primarily stemming from the difficulty in precisely controlling reaction sites, limiting structural diversity and property tunability. Herein, we propose a regioselective synthetic strategy that employs 2,1-BN-naphthalene derivatives, wherein selective activation of N-H and C-H bonds is achieved in conjunction with -halogenated phenylboronic acids.
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