Results 161 to 170 of about 1,712,028 (279)

Overview of Photochemical Reactions for the Synthesis of Aza and Oxa-Spirocyclic Compounds Under Visible Light Irradiation. [PDF]

Chem Biodivers
Bhardwaj A, Jaiswal S, Bhardwaj K, Sharma S, Dwivedi J.   +4 more
europepmc   +1 more source

Nucleophilic Aromatic Substitution in the Gas Phase

Journal of Physical Organic Chemistry, Volume 39, Issue 11, November 2026.
In this review, we highlight experimental studies of gas‐phase SNAr. Studying reactions in the gas phase provides invaluable information on intrinsic reactivity by eliminating the complications of solvent effects. Because SNAr is a fundamental reaction in chemical research and organic synthesis, understanding its underlying reactivity and mechanisms is
Daniel N. Hirsch, Damon J. Hinz, Jeehiun K. Lee   +2 more
wiley   +1 more source

Synthesis of Tetrahydro-β-Carboline-Based Spirocyclic Peptides via Cascade N-Boc Deprotection and Pictet-Spengler Reaction of Tryptophan: Potent Anti-Inflammatory and Anti-Oxidant Activities. [PDF]

Drug Dev Res
Battula S, Kambhampati V, Andugulapati SB, Nayani K.   +3 more
europepmc   +1 more source

Dynamic Modeling of Supercapacitor Self‐Discharge Through a Solar Cell in Photosupercapacitor Systems

physica status solidi (RRL) – Rapid Research Letters, Volume 20, Issue 11, November 2026.
In photosupercapacitor configurations, the supercapacitor discharges through the solar cell under dark conditions without load. If the supercapacitor voltage overcomes the threshold voltage of the cell (VSC > VON), the cell becomes forward‐biased and its impedance |Z| drops, allowing the flow of a reverse current.
Cinthia Cuevas‐Zapata, Asiel N. Corpus‐Mendoza, Ari Martín Vargas‐Sotomayor, Paola Gabriela Abrego‐Martinez, Francisco Enrique Cancino‐Gordillo   +4 more
wiley   +1 more source

Multicomponent Selective and Efficient Synthesis of Spiro[furo[2,3-<i>d</i>]pyrimidine-6,4'-pyrazole] Scaffold Under a Column Chromatography-Free Protocol at Room Temperature. [PDF]

Molecules
Elinson MN, Ryzhkova YE, Kalashnikova VM, Egorov MP.   +3 more
europepmc   +1 more source

Exploitation of the Ugi 5-Center-4-Component Reaction (U-5C-4CR) for the Generation of Diverse Libraries of Polycyclic (Spiro)Compounds. [PDF]

Front Chem, 2018
Moni L, De Moliner F, Garbarino S, Saupe J, Mang C, Basso A.   +5 more
europepmc   +1 more source

Bidirectional Strategy Applied to the Synthesis of Bis(spiroketal)butenolides Using Bismuth(III) Triflate as Catalyst

ChemistrySelect, Volume 11, Issue 41, 3 November 2026.
The direct synthesis of new trispiro compounds possessing two spiroketalbutenolide subunits only unified by a single carbon atom has been achieved according a tandem bidirectional sequence from a bis(acetylenic) diol and different α‐ketoesters. The reaction catalyzed by bismuth salts delivered as main product (R*,s*,R*) trispiro derivatives which ...
Fabienne Fache, Léa Meusnier, Olivier Piva   +2 more
wiley   +1 more source

Spirooxindole 5-(Trifluoromethyl)benzothiazole Hybrids: Synthesis, Crystal Structure, and Antioxidant Activity. [PDF]

Arch Pharm (Weinheim)
Karabag N, Temizer-Keser AB, Pekmez M, Mertoğlu-Kamalı E, Kaynak FB, Özsoy N, Arda N, Karalı N.   +7 more
europepmc   +1 more source

Fluorescence Sensing of Anions Like Adenosine 5ʹ‐Triphosphate With pH‐Gated Porous Dye‐Loaded Cerasomes

Small, Volume 22, Issue 61, 2 November 2026.
The development of gated systems enabling controlled pore opening offers new opportunities for sensing applications. This study explores dye loading in porous and non‐porous cerasomes and pH‐dependent ATP‐triggered gating via polyamine anchors. Porous cerasomes were synthesized using block‐co‐polymers, enabling controlled proton influx and fluorescence‐
Romane Vinot, Estela Climent, Maja Friedrich, Jérémy Bell, Knut Rurack   +4 more
wiley   +1 more source

Spirooxindole Derivatives as Emerging Scaffolds in Drug Discovery: Synthetic Strategies, Structure-Activity Relationship, and Biological Activities. [PDF]

ChemMedChem
Kalita RC, Bezbaruah S, Patle D.
europepmc   +1 more source