Results 231 to 240 of about 2,273,903 (330)

Recyclable All‐in‐One Organo‐Photo‐Auxiliaries Enabling (sp3)C−(sp3)C Coupling Reactions with Diverse Functionalities

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract Photochemical C−C coupling reactions can be tailored to industrial chemical processes and preparations of pharmaceuticals. Recent approaches in this area are limited to using precious transition metal coordination complexes that facilitate light absorption and redox processes with benchtop chemicals. Herein, we propose a paradigm that involves
Samjhana Maharjan, Ravi Kishore Dakoju, Bella Albano, Pamela A. Ondiek, Joseph M. O'Shea, Angel G. Cosme‐Hernandez, Donald Wink, Barry C. Pemberton, Steven A. Lopez, A. Jean‐Luc Ayitou   +9 more
wiley   +1 more source

Isolation, structural elucidation, and integrated biological and computational evaluation of antidiabetic labdane diterpenes from <i>Curcuma zedoaria</i> rhizomes. [PDF]

RSC Adv
Le TH, Lu DNT, Nguyen HX, Dang PH, Do TNV, Le NTH, Truong TQ, Nguyen MH, Nguyen MTT.   +8 more
europepmc   +1 more source

Dual Lewis Acid Promoted/Visible Light Driven Preparation of Aryl Diazenyl Oxazoles from Isocyanoacetamides and Arylazo Sulfones

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract While arylazo sulfones have been widely applied as arylating agents, their exploitation for diazenylation reactions has been previously limited to electron‐rich alkenes such as styrenes and silyl enol ethers. Herein we optimized a synthetic one‐pot protocol to access oxazolyl azo compounds via a selective domino ring‐closing/aryldiazenylation ...
Enzo Delalande, Lorenzo di Terlizzi, Camilla Russo, Carmine Volpe, Stefano Protti, Mariateresa Giustiniano   +5 more
wiley   +1 more source

Triptycepenes: Synthesis, Metal Complexes, and Their Reactivity in Catalytic Reactions. [PDF]

Organometallics
Mothuku SS, Monkowius U, Hapke M.
europepmc   +1 more source

Direct Access to α,β‐Unsaturated γ‐Lactams via Palladium‐Catalysed Carbonylation of Propargylic Ureas.

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract Additive carbonylations typically necessitate strong nucleophiles, such as alcohols or amines. In this study, we carbonylated a poorly nucleophilic urea, under oxidant‐free conditions. Our straightforward carbonylative strategy enables access to versatile α,β‐unsaturated γ‐lactams featuring an aminocarbonyl fragment, utilizing readily ...
Debora Schiroli, Aleksandr Voronov, Francesco Pancrazzi, Nunzio Iraci, Salvatore Vincenzo Giofrè, Beatrice Macchi, Valeria Stefanizzi, Raffaella Mancuso, Bartolo Gabriele, Paolo Pio Mazzeo, Luca Capaldo, Nicola Della Ca'   +11 more
wiley   +1 more source

Stereoselective Synthesis of Nucleotide Analog Prodrugs (ProTides) via an Oxazaphospholidine Method. [PDF]

J Org Chem
Nakamura M, Kakuta K, Sato K, Wada T.
europepmc   +1 more source

Improving the Photochemical Skeletal Enlargement of Pyridines to 1,2‐Diazepines with Isocyanates

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract In this work, we extend the one‐pot protocol to synthesize 1,2‐diazepines from commercially available and cheap starting materials. Capitalizing on isocyanate derivatives as activating agents, the photochemical skeletal enlargement occurs, while preserving key functional groups embedded in more than 30 substrates.
Clément Ghiazza, Aurélie Damond, Jérôme Marrot, Xavier Moreau   +3 more
wiley   +1 more source

Towards Cytotoxic Derivatives of Cafestol. [PDF]

Molecules
Heise NV, Kozubek M, Hoenke S, Ludwig S, Deigner HP, Al-Harrasi A, Csuk R.   +6 more
europepmc   +1 more source

Mg(SPh)2 as a Catalyst for Efficient Photocatalytic Alkylation Reactions of Active Methylene Compounds with Nonactivated Alkenes

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract Mg(SPh)2 has been found to be a highly active catalyst in photocatalytic alkylation reactions of active methylene compounds with nonactivated alkenes. The desired reactions proceeded smoothly to afford the corresponding alkylated products in high yields with low catalyst loadings (0.2–0.3 mol%). This protocol is applicable to a continuous‐flow
Yasuhiro Yamashita, Tomoya Hisada, Yuki Sato, Shū Kobayashi   +3 more
wiley   +1 more source

Water‐Mediated 1,7‐Palladium Aryl‐to‐Aryl Migration in an Unusual Aryne Trimerization Enables the Synthesis of Multihelicenes with Profoundly Hindered Stereogenic Axes

Advanced Synthesis &Catalysis, EarlyView.
In the presence of a Pd0 catalyst, large π‐extended arynes trimerize in an unusual manner to forge extremely compact and strained chiral benzenoids. This new trimerization reaction involves a 1,7‐Pd isomerization, a rare and poorly understood process that is elucidated.
Albert Artigas, Manuel A. Ortuño, Jesús Castro‐Esteban, Michel Giorgi, Diego Peña, Dolores Pérez, Yoann Coquerel   +6 more
wiley   +1 more source