Results 61 to 70 of about 80,245 (335)

Three‐Component Synthesis of γ‐Amino Esters with α‐Quaternary Carbon Centers via NHC/Photoredox Dual Catalysis

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
γ‐Amino acid derivatives with an α‐quaternary center are prevalent in medicinally important compounds. A dual N‐heterocyclic carbene/photocatalytic pathway is developed for the three‐component synthesis of α, α ‐disubstituted γ‐amino esters. This methodology allows for the rapid synthesis of diverse libraries of γ‐amino esters in good yields.
Adam X. Wayment, Karl A. Scheidt
wiley   +1 more source

Photocatalytic Polyene Cyclization to Cyclopentyl Thioethers with Consecutive Quaternary Centers in Fluorinated Alcohols

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
A photocatalytic strategy enables efficient cyclization of polyenes to cyclopentyl thioethers with consecutive all‐carbon quaternary centers. Using 2,4,6‐triphenylpyrylium tetrafluoroborate in 1,1,1,3,3,3‐hexafluoroisopropanol, the method proceeds via a thiyl radical mechanism, offering high yields and good diastereoselectivities.
Nicolás Rascón   +2 more
wiley   +1 more source

Cu(I)‐Catalyzed Interrupted Cycloaddition Between Azides, Ag(I)‐Acetylides, and Diorganoyl Dichalcogenides

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Unleashing the power of Ag(I)‐acetylides with LiCl/dimethyl sulfoxide (DMSO). The LiCl/DMSO mixture have an unexplored ability to dramatically increase the solubility of Ag(I)‐acetylides regardless of their molecular structure, which is explored to achieve high chemoselectivity in the Cu(I)‐catalyzed interrupted cycloaddition between organic azides, Ag(
Diego Seckler   +8 more
wiley   +1 more source

A thermal dehydrogenative Diels-Alder reaction of styrenes for the concise synthesis of functionalized naphthalenes.

open access: yesOrganic Letters, 2012
Functionalized naphthalenes are valuable building blocks in many important areas. A microwave-assisted, intramolecular dehydrogenative Diels-Alder reaction of styrenyl derivatives to provide cyclopenta[b]naphthalene substructures not previously ...
L. Kocsis   +2 more
semanticscholar   +1 more source

Advances and Outlook of Nickel‐Based MOFs–LDHs Materials for Energy Conversion

open access: yesAdvanced Sustainable Systems, EarlyView.
In this graphical abstract, we present the pivotal gap between the activity and stability parameters as far as intergrated Ni‐based MOF/LDF electrocatalysts are concerned. For large scale application, these two parameters should be optimized and furthermore balanced in order to promote sustainable electrocatalytic hydrogen production.
Lincoln Einstein Kengne Fotso   +4 more
wiley   +1 more source

Theoretical Study of Intramolecular Interactions in Peri-Substituted Naphthalenes: Chalcogen and Hydrogen Bonds

open access: yesMolecules, 2017
A theoretical study of the peri interactions, both intramolecular hydrogen (HB) and chalcogen bonds (YB), in 1-hydroxy-8YH-naphthalene, 1,4-dihydroxy-5,8-di-YH-naphthalene, and 1,5-dihydroxy-4,8-di-YH-naphthalene, with Y = O, S, and Se was carried out ...
Goar Sánchez–Sanz   +2 more
doaj   +1 more source

JA‐Mediated Regulation of Amino Acid Homeostasis Adjusts Metabolic Flux and Enhances Spider Mite Tolerance via the SlJAZ8‐SlWRKY57‐SlAVT6s Module in Tomato

open access: yesAdvanced Science, EarlyView.
This study elucidates a novel SlJAZ8‐SlWRKY57‐SlAVT6A/SlAVT6B module that effectively channels metabolic flux from primary to secondary metabolism, impacting plant growth, development, and resistance. Two novel vacuolar amino acid exporters, SlAVT6A and SlAVT6B, fine‐tunes trichomes, terpenes, and gibberellins, bolstering spider mite resistance.
Yingchen Hao   +11 more
wiley   +1 more source

Naphthalen-1-ylmethanol [PDF]

open access: yesIUCrData, 2020
Apart from the OH group, the molecule of the title compound, C11H10O, is almost planar with all carbon atoms located within 0.03 Å of their mean plane. In the crystal, the molecules are linked by O—H...O hydrogen bonds, generating infinite chains running parallel to the [100] direction.
openaire   +2 more sources

Microporous Polymer Membranes: Molecular Stents Enhanced Solvent‐Accessibility for Organic Solvent Transport

open access: yesAdvanced Science, EarlyView.
A novel microporous polyimide (PI‐TB‐NDI) is designed for enhanced organic solvent nanofiltration. By incorporating o‐methyl groups into the Tröger's base (TB) unit to create molecular stents, the polymer's intrinsic free volume is effectively increased without the need for post‐treatment.
Shuang Guo   +9 more
wiley   +1 more source

Gold(I)-Catalyzed Aromatization: Expeditious Synthesis of Polyfunctionalized Naphthalenes

open access: yesiScience, 2019
Summary: A gold-catalyzed 6-endo-dig carbocyclization of alkyne with the pendent diazo group is reported. It provides an expeditious approach for the synthesis of multi-functionalized naphthalene derivatives under mild conditions.
Cheng Zhang   +7 more
doaj  

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