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Enantioselective Borylcupration/Cyclization of Alkene-Tethered Oxime Esters.
Angew Chem Int Ed Engl
January 2025
University of Toronto, Dept. of Chemistry, 80 St. George Street, M5S 3H6, Toronto, CANADA.
A copper-catalyzed enantioselective synthesis of borylated 1-pyrrolines from γ,δ-unsaturated oxime esters is reported. Twenty-four novel 1-pyrroline derivatives are reported in yields ranging from 26% to 96% and enantioselectivities from 74.5:25.
View Article and Find Full Text PDFEnantioselective Synthesis of Tetrahydro-1-1,3-methanocarbazoles by Formal (3 + 3)-Cycloaddition Using Bicyclo[1.1.0]butanes.
J Am Chem Soc
January 2025
Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, Münster 48149, Germany.
Asymmetric synthesis presents many challenges, with the selective formation of chiral bridged polyheterocycles being a notable example. Cycloadditions using bicyclo[1.1.
View Article and Find Full Text PDFThe asymmetry engine: how plants harness asymmetries to shape their bodies.
New Phytol
January 2025
Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre (UPSC), Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden.
Plant development depends on growth asymmetry to establish body plans and adapt to environmental stimuli. We explore how plants initiate, propagate, and regulate organ-wide growth asymmetries. External cues, such as light and gravity, and internal signals, including stochastic cellular growth variability, drive these asymmetries.
View Article and Find Full Text PDFTotal Synthesis of (+)-7,7'-Bistaxodione via Late-Stage Electrochemical Dimerization.
J Org Chem
January 2025
Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Kalyani, Nadia 741 246, West Bengal, India.
The first asymmetric total synthesis of the tetraterpenoid (+)-7,7'-bistaxodione () via a unique late-stage electrochemical oxidative dimerization of a diterpenoid quinone methide tumor Inhibitor (+)-taxodione () has been described. The naturally occurring monomer was synthesized from aromatic abietane diterpenoid, ferruginol (1e) . Further, an efficient convergent synthetic route toward the naturally occurring aromatic abietane terpenoids has been shown via a Lewis acid-mediated diastereoselective cationic epoxy-ene cyclization.
View Article and Find Full Text PDFAsymmetric self-organization from a symmetric film by phase separation.
Nanoscale
January 2025
Department of Materials Science and Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan.
Self-organization realizes various nanostructures to control material properties such as superconducting vortex pinning and thermal conductivity. However, the self-organization of nucleation and growth is constrained by the growth geometric symmetry. To realize highly controlled three-dimensional nanostructures by self-organization, nanostructure formation that breaks the growth geometric symmetry thermodynamically and kinetically, such as tilted or in-plane aligned nanostructures, is a challenging issue.
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