Results 101 to 110 of about 1,703,017 (234)

Leveraging Isomerization of Azo Dyes and Imines for the Facile Synthesis of Oxadiazepines and Related Heterocycles

Journal of Heterocyclic Chemistry, EarlyView.
A robust method for synthesizing substituted oxadiazepines and related heterocycles via intramolecular SNAr is detailed. Under mild conditions, this methodology has been leveraged to afford products of varying electronic and aryl nature in up to 99% yields.
Matthew W. Reeves, Christian A. Guzman, Herbi Yuliantoro, Peng Li, Elizabeth R. Young   +4 more
wiley   +1 more source

Synthesis of a-Diazo Carbonyl Compounds with the Shelf-Stable Diazo Transfer Reagent Nonafluorobutanesulfonyl Azide

, 2011
5 páginasNonafluorobutanesulfonyl azide is a shelf-stable, cost-effective and general diazo transfer reagent for the efficient synthesis of a-diazo carbonyl compounds in excellent yields and in very short reaction times, under mild conditions.
José Ramón Suárez, Chiara, José Luis, Jose Luis Chiara, Suárez, José Ramón   +3 more
core   +1 more source

Main‐chain polyfullerenes: Taking fullerene to the next dimension

Polymer International, EarlyView.
This short review appraises main‐chain polyfullerenes. Their slow development over 30 years has suddenly boomed with a rapid growth due to exciting developments in solar energy. Abstract This mini‐review gives an overview of the development, chemistry, properties and applications of main‐chain polyfullerenes.
Marco Antônio GB Gomes, Orisson Ponce Gomes, Patricia Targon Campana, Didier Bégué, Roger C Hiorns   +4 more
wiley   +1 more source

Programmable Chirality Transfer: Seeding‐Directed Co‐Assembly of Functional Molecules With Amyloid Frameworks

Small, EarlyView.
Seeding‐directed co‐assembly enables efficient chirality transfer from chiral amyloid scaffold to achiral functional molecules. Controlled assembly pathways result in hierarchical hybrid supramolecular structures showing enhanced induced electronic circular dichroism (IECD) and/or vibrational circular dichroism (IVCD).
Aleksandra Kołodziejczyk, Joanna Mazurkiewicz, Andrzej J. Kałka, Agnieszka Kaczor   +3 more
wiley   +1 more source

Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds

The Chemical Record, EarlyView.
This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá, Patrick C. Nobre, Isabelly O. Ferreira, Juliano B. Azeredo, Vanessa Nascimento   +4 more
wiley   +1 more source

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

The Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra, Subba Rao Cheekatla, Keshaba Nanda Parida   +2 more
wiley   +1 more source

Metal‐Catalyzed Benzannulation: Recent Advances in Catalyst Design, Mechanistic Insights, and Aromatic Framework Construction

The Chemical Record, EarlyView.
This review offers a contemporary overview of metal‐catalyzed benzannulation (2018–present) encompassing transition, main‐group, post‐transition, and rare‐earth‐metal catalysts. It systematically highlights catalyst design, mechanistic insights, stereo‐ and regioselectivity, and synthetic applications toward aromatic and heteroaromatic scaffolds, while
Sana Jamshaid, Divya Shrestha, Raju S. Thombal, Jeung Gon Kim, Kim Seong Cheol, Yong Rok Lee   +5 more
wiley   +1 more source

Nutrimental Determinants of Chronological Aging and Competitiveness in the snf1Δ Warburg Model

Yeast, EarlyView.
Deletion of SNF1 in Saccharomyces cerevisiae alters chronological aging in a nutrient‐dependent manner, shortening lifespan under low‐nutrient conditions and extending it under high‐glucose and high‐amino‐acid conditions. Under nutrient‐rich conditions, the snf1∆ strain also showed an approximately 2‐log increase in competitiveness relative to the wild
Abigail Correa‐Olivares, Amanda de la Caridad Lahera Champagne, Alma Delia Bertadillo‐Jilote, Karla I. Lira‐de Leon, David G. Garcia‐Gutierrez, Gerardo M. Nava, Vanessa Sanchez‐Quezada, Luis Alberto Madrigal‐Perez   +7 more
wiley   +1 more source

Advances in organic UV filters for sunscreens over the past decade

Photochemistry and Photobiology, EarlyView.
Highlighted organic UV filter frameworks that have been described for sunscreens over the past decade divided into three groups: derivatives of or inspired by approved organic UV filters, natural product‐based compounds, and miscellaneous. Abstract Ultraviolet (UV) radiation is a major environmental factor in photoaging, erythema, and skin cancer ...
Gabriela Zanella Marcon, Maria Carolina Theisen, Andressa Motta Castro, Giovana Jones Radke, Fernando Fumagalli   +4 more
wiley   +1 more source

Diels–Alder Cycloaddition of N-Azobenzene Maleimides with Furan and Electrochemical Study of Redox Reactions

Reactions
This work reports the synthesis of aminoazobenzene compounds derived from 3,5-dimethylaniline (1a–1f) via a diazo-coupling reaction with aromatic amines.
David Fernando Venegas-Villalvazo, David Abraham Figueroa-Hernández, Armando Pineda-Contreras, José Manuel Flores-Alvarez, Héctor García-Ortega, Juan Saulo González-González   +5 more
doaj   +1 more source