Results 81 to 90 of about 253,250 (328)

Proton‐Coupled Electron Transfer Processes in the Decarboxylative Synthesis of C‐4 Substituted Chroman‐2‐Ones

Advanced Synthesis &Catalysis, EarlyView.
This research presents a new mild photocatalytic method enables C‐4 alkylation of chroman‐2‐one derivatives with primary alkyl radicals. This radicals are generated via oxidative PCET process. Developed approach offers broad substrate scope, scalability under photo‐flow conditions, and mechanistic evidence supports a decarboxylation pathway under polar
Ewelina Kowalska, Benedetta Carli, José Alemán, Leyre Marzo, Anna Albrecht   +4 more
wiley   +1 more source

Syntheses and characterizations of the in vivo replicative bypass and mutagenic properties of the minor-groove O2-alkylthymidine lesions. [PDF]

, 2014
Endogenous metabolism, environmental exposure, and treatment with some chemotherapeutic agents can all give rise to DNA alkylation, which can occur on the phosphate backbone as well as the ring nitrogen or exocyclic nitrogen and oxygen atoms of ...
Cai, Qian, Wang, Pengcheng, Wang, Yinsheng, Zhai, Qianqian   +3 more
core   +1 more source

Few layer 2D pnictogens catalyze the alkylation of soft nucleophiles with esters [PDF]

Nature Communications, 2019
Group 15 elements in zero oxidation state (P, As, Sb and Bi), also called pnictogens, are rarely used in catalysis due to the difficulties associated in preparing well–structured and stable materials. Here, we report on the synthesis of highly exfoliated,
Vicent Lloret, Miguel A Rivero-Crespo, J. A. Vidal-Moya, S. Wild, A. Doménech‐Carbó, Bettina S. J. Heller, Sunghwan Shin, H. Steinrück, F. Maier, F. Hauke, M. Varela, A. Hirsch, A. Leyva–Pérez, Gonzalo Abellán   +13 more
semanticscholar   +1 more source

Synthesis of Functionalized Homoallylic Alcohols via a Salt‐Free Three‐Component Nickel‐Catalyzed Coupling Reaction

Advanced Synthesis &Catalysis, EarlyView.
A nickel catalyzed three‐component coupling reaction between an aldehyde, a secondary amine, and butadiene allows a straightforward access to 5‐aminopent‐3‐en‐1‐ol scaffolds according to a salt‐free process. Key steps are oxidative coupling reaction between one aldehyde, one butadiene on a low valent nickel precursor, and the nucleophilic attack of a ...
Anthony Saint Pol, Maxime Roger, Alexis Mifleur, Pauline Loxq, Laëtitia Chausset‐Boissarie, Aurélien Béthegnies, Maël Penhoat, Isabelle Suisse, Mathieu Sauthier   +8 more
wiley   +1 more source

Shape Selective Alkylation of Biphenyl with 1-octene on ((Al+C3H7Cl)+C2H4) Catalysts [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2003
Alkylation of biphenyl with 1-octene was investigated using ((Al+C3H7Cl)+C2H4) catalysts. The catalytic activity of ((Al+C3H7Cl)+C2H4) for the alkylation was studied at different temperatures, mol ratios of biphenyl to 1-octene, reaction times and ...
Sevil Veli (Veliyeva)
doaj  

Posttranslational Regulation of the NLR Family Pyrin Domain-Containing 3 Inflammasome

Frontiers in Immunology, 2018
The NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome is a multi-protein complex that can be activated by a variety of pathogen-associated molecular patterns or damage-associated molecular patterns.
Do-Wan Shim, Kwang-Ho Lee, Kwang-Ho Lee
doaj   +1 more source

One‐Step Copper‐Assisted Synthesis of α‐(Styrylsulfonyl)amides via SO2 Incorporation Under Visible Light

Advanced Synthesis &Catalysis, EarlyView.
α‐(Styrylsulfonyl)amides are prepared from α‐bromoamides, SO2, and styrenes in a one‐step photoredox‐catalyzed reaction in the presence of a copper complex. Additionally, related ester analogs could be synthesized following the same procedure. The mechanism of the newly developed method is investigated and model postmodification reactions are carried ...
Nejc Petek, Till Opatz
wiley   +1 more source

Biocatalytic N-Alkylation of Amines Using Either Primary Alcohols or Carboxylic Acids via Reductive Aminase Cascades.

Journal of the American Chemical Society, 2019
The alkylation of amines with either alcohols or carboxylic acids represents a mild and safe alternative to the use of genotoxic alkyl halides and sulfonate esters.
J. I. Ramsden, Rachel S. Heath, Sasha R. Derrington, S. L. Montgomery, J. Mangas-Sánchez, K. Mulholland, N. Turner   +6 more
semanticscholar   +1 more source

P‐Stereogenic Phosphines via Mn(I)‐Catalyzed Asymmetric Hydrophosphination of Vinyl Sulfones: A Case of Solvent‐Induced Stereoinversion

Advanced Synthesis &Catalysis, EarlyView.
A new strategy for synthesis of P‐chiral phosphines via manganese‐catalyzed enantioselective hydrophosphination was established. The solvent like iPrOH was found to be able to tune the enantioselectivity of the product, thus providing both enantiomers of P(III)‐stereogenic compounds with a single (Rc, Sp)‐Clarke Mn(I) complex catalyst. In this work, we
Bin Wan, Syuzanna R. Harutyunyan
wiley   +1 more source

Active species in chloroaluminate ionic liquids catalyzing low-temperature polyolefin deconstruction

Nature Communications
Chloroaluminate ionic liquids selectively transform (waste) polyolefins into gasoline-range alkanes through tandem cracking-alkylation at temperatures below 100 °C.
Wei Zhang, Rachit Khare, Sungmin Kim, Lillian Hale, Wenda Hu, Chunlin Yuan, Yaoci Sheng, Peiran Zhang, Lennart Wahl, Jiande Mai, Boda Yang, Oliver Y. Gutiérrez, Debmalya Ray, John Fulton, Donald M. Camaioni, Jianzhi Hu, Huamin Wang, Mal-Soon Lee, Johannes A. Lercher   +18 more
doaj   +1 more source