Results 91 to 100 of about 3,016,957 (322)

Synthesis of Spirolactones from Carbonyls via Carboborylation of N‐Sulfonylhydrazones with Alkoxycarbonylalkylboronic Acids

Advanced Synthesis &Catalysis, EarlyView.
Spirolactones are readily prepared from carbonyls via their N‐tosylhydrazones. The reaction involves carboborylation with ethoxycarbonyl‐substituted boronic acids, followed by oxidation and lactonization. Thermal or photochemical protocols enable versatility.
Lucía López, Sara Filgueira, María‐Paz Cabal, Carlos Valdés   +3 more
wiley   +1 more source

Asymmetric Strategies for the Synthesis of Enantiopure α‐/β‐/γ‐Thio‐Carboxylic Acids Bearing a Stereocentre at CS Bond

Advanced Synthesis &Catalysis, EarlyView.
Enantioenriched α‐/β‐/γ‐thiocarboxylic acids featuring C–S chirality are valuable targets in organic synthesis. This review outlines recent progress in their asymmetric synthesis, including chiral pool approaches, metal‐ /organo‐catalysis, and emerging biocatalytic strategies. Enantiomerically pure α‐/β‐/γ‐thiocarboxylic acids bearing a stereocentre at
Jingyue Wu, Daniele Castagnolo
wiley   +1 more source

A Nazarov-Ene Tandem Reaction for the Stereoselective Construction of Spiro Compounds. [PDF]

Chemistry, 2021
Etling C, Tedesco G, Kalesse M.
europepmc   +1 more source

Design of Thermodynamically Stable Lead‐Free Cs2InCuCl6 Double Perovskite Solar Cells

Advanced Theory and Simulations, EarlyView.
Lead‐free Cs₂InCuCl₆ double perovskite (CICC) is explored as a solar absorber via SCAPS simulations. Device optimization of absorber thickness, defect densities, and interface kinetics with HTL/ETL materials reveals promising power conversion efficiency.
Luong Thien Bao Pham, Naveen Kumar Elumalai, Pranta Barua, Kiran Sreedhar Ram, Hooman Mehdizadeh‐Rad, Kannoorpatti Krishnan   +5 more
wiley   +1 more source

Stereoselective Transformation of Cyclodecene-1,4-dione Systems, Derived from Steroids, to the Corresponding spiro-γ-lactones. A Semiempirical MO Study

Molecules, 1999
The thermal and acid-catalyzed intramolecular rearrangement of the (Z)- and (E)-cyclodecene-1,4-dione compounds deriving from steroids, 2a,b and 3a,b, respectively, proceeds stereoselectively to give the corresponding configurationally different spiro ...
Milan Dabovich, Natalija Krstich, Lidija Bondarenko- Gheorghiu, Mihailo Lj. Mihailovich, Ivan Juranich, Vladimir Pavlovich, Ljubinka Lorenc   +6 more
doaj   +1 more source

STAT6 Activation Exacerbates Ferroptosis in Airway Epithelium by Inhibiting PRKN‐Mediated Mitophagy in Pulmonary Fibrosis

Advanced Science, EarlyView.
This study uncovers STAT6‐driven pulmonary fibrosis (PF) via suppression of PRKN‐mediated airway epithelial mitophagy, triggering mitochondrial dysfunction and ferroptosis. Rifabutin is identified as a potent STAT6 inhibitor that effectively reverses fibrotic progression. These findings reveal the STAT6‐PRKN axis as a pathogenic regulator and provide a
Youjing Yang, Guangbin Huang, Tao Zhang, Yi Ling, Junyu Jiang, Dingyuan Du, Yu Ma, Shasha Tao   +7 more
wiley   +1 more source

Ultrasound-Engineered fabrication of immobilized molybdenum complex on Cross-Linked poly (Ionic Liquid) as a new acidic catalyst for the regioselective synthesis of pharmaceutical polysubstituted spiro compounds. [PDF]

Ultrason Sonochem, 2021
Elyasi Z, Ghomi JS, Najafi GR.
europepmc   +1 more source

Diindolocarbazole as a Core Structure for Narrow‐Emitting and Highly Efficient Blue Organic Light‐Emitting Diodes

Advanced Science, EarlyView.
A molecular design approach inducing high efficiency and narrow emission in blue organic light‐emitting diodes using indolocarbazole and diindolocarbazole backbone structures realized high external quantum efficiency of 28.2% and sharp emission spectrum with a full width at half maximum of 15 nm.
Jihoon Kang, Junyoung Moon, Soon Ok Jeon, Unhyeok Jo, Seungwon Han, Sangmo Kim, Jun Yeob Lee   +6 more
wiley   +1 more source

Perovskite Neuromorphic Engine for Transformer Architectures

Advanced Science, EarlyView.
This paper introduces a perovskite‐based memristive computing unit that performs all necessary operations for Transformer artificial neural networks entirely in the analog domain. The system achieves comparable performance to GPU‐based systems, but with only 1.7% of the energy consumption, boosting power efficiency by 58 times.
Zhenye Zhan, Yulu Gao, Yue Liao, Weiguang Xie, Si Liu, Xiaomu Wang   +5 more
wiley   +1 more source