Results 51 to 60 of about 4,349 (248)

Purine Chemistry in the Early RNA World at the Origins of Life: From RNA and Nucleobases Lesions to Current Key Metabolic Routes

ChemBioChem, EarlyView.
In the nascent processes of the beginnings and evolution of life, nucleobases and especially purines, ribonucleos(t)ides and primitive RNAs have been continuously modified. A RNA‐peptide world and key metabolic pathways probably have emerged from the corresponding chemical modifications resulting from adenine deamination, purine alkylation and ...
Jean‐Luc Décout, Marie‐Christine Maurel   +1 more
wiley   +1 more source

Interstellar Carbodiimide (HNCNH) - A New Astronomical Detection from the GBT PRIMOS Survey via Maser Emission Features [PDF]

, 2012
In this work, we identify carbodiimide (HNCNH), which is an isomer of the well-known interstellar species cyanamide (NH2CN), in weak maser emission, using data from the GBT PRIMOS survey toward Sgr B2(N). All spectral lines observed are in emission and have energy levels in excess of 170 K, indicating that the molecule likely resides in relatively hot ...
arxiv   +1 more source

Impacts of Chalcogen Bonding on the Stability and Reactivity of 5‐Iminothianthrene Platform: Toward Electrophilic Nitrogen Sources

Chemistry – A European Journal, EarlyView.
5‐Iminothianthrene reacted with various electrophiles, such as acid chlorides, protons, and iso(thio)cyanates, to afford the corresponding adducts. Intramolecular chalcogen bonding (ChB) was identified through natural bond orbital (NBO) analysis based on their X‐ray crystal structures.
Ryutaro Tawara, Shohei Hamada, Takumi Furuta, Yusuke Kobayashi   +3 more
wiley   +1 more source

Enraizamento de estacas lenhosas de cultivares de ameixeira com aplicação de ácido indolbutírico e cianamida hidrogenada Hardwood cuttings rooting of plum tree cultivars with application of indolbutyric acid and hydrogen cyanamide

Pesquisa Agropecuária Brasileira, 2006
O objetivo deste trabalho foi verificar o efeito do ácido indolbutírico (AIB) e cianamida hidrogenada, no enraizamento de estacas lenhosas de três cultivares de ameixeira (Pluma 7, Rosa Mineira e Amarelinha), tratadas com concentrações de 0 e 4.000 mg L ...
Ubirajara Ribeiro Mindêllo Neto
doaj   +1 more source

Merging Heterogeneous Graphitic Carbon Nitride Photocatalysis with Cobaloxime Catalysis in Uphill Dehydrogenative Synthesis of Anilines

ChemSusChem, EarlyView.
Heterogeneous photocatalyst, mesoporous graphitic carbon nitride (mpg‐CN) and H2‐evolution catalyst, cobaloxime, enable endergonic and endothermic reaction—synthesis of substituted anilines along with H2 evolution. Synthesis of substituted anilines upon nucleophilic addition of secondary amines to cyclohexanone derivatives followed by aromatization of ...
Sonia Zoltowska, Stefano Mazzanti, Sara Stolfi, Jingsan Xu, Matej Huš, Ana Oberlintner, Matic Pavlin, Paolo Ghigna, Blaž Likozar, Piero Torelli, Luca Braglia, Davide Ravelli, Maurizio Fagnoni, Iker Agirrezabal‐Telleria, Markus Antonietti, Paolo Giusto, Oleksandr Savateev   +16 more
wiley   +1 more source

Torsion of canes and hydrogenated cyanamide in bud bursting and production of grapevine cv. Itália muscat in the São Francisco valley

Revista Brasileira de Fruticultura, 2019
The grapevine cultivated in tropical regions, such as the Sub-medium of the São Francisco Valley, exhibits a strong bud dormancy and high apical dominance, thus presenting the need for the utilization of products that promote the dormancy breaking of the
Tales Gonçalves Rodrigues, Pedro Igor Rodrigues Modesto, Jackson Teixeira Lobo, Jenilton Gomes da Cunha, Ítalo Herbert Lucena Cavalcante   +4 more
doaj   +1 more source

Manufacture and Uses of Cyanamid. [PDF]

Journal of Industrial & Engineering Chemistry, 1913
n ...
openaire   +3 more sources

Plastic‐to‐Treasure: Innovative advances in photo/electro‐catalytic upcycling technologies for commodity chemicals and fuels

EcoEnergy, EarlyView.
A huge amount of plastic waste is generated yearly. With the aid of photo/electrocatalysis, they can be upcycled to clean fuels and green chemicals, leading to rehabilitation of the environment and sustainability. This review shines a light on the design of photo/electrocatalysts for effective plastic transformation into economically high‐valued ...
Yu Xuan Leiu, Ke Ming Lim, Zi‐Jing Chiah, Elton Song‐Zhe Mah, Wee‐Jun Ong   +4 more
wiley   +1 more source

Photoreforming Light Alcohols for Value‐Added Resources: A Mini Review

Energy Technology, EarlyView.
Harnessing solar energy to drive chemical reactions is an environmentally sustainable approach within catalytic chemistry, particularly in the photoreforming of light alcohols into their oxidates. Concurrently, photoreactions yield clean fuel hydrogen and other valuable by‐products.
Ruhan Liu, Hang Yin, Peiqi Guo, Xu Liu, Zongyou Yin   +4 more
wiley   +1 more source

Comparison of the Effects of Brominated Perylenediimide and Perylene Tetraester Modified G‐C₃N₄ S‐Scheme Nanocomposites on the Photocatalytic Degradation of Anionic and Cationic Dyes and Herbicide

Global Challenges, EarlyView.
Exfoliated g‐C₃N₄ sensitized with brominated perylene dyes (dBrPDI and dBrPTE) significantly enhances photocatalytic degradation of RhB and methyl orange via improved charge separation and light absorption. Performance varies by pollutant type, highlighting that photocatalytic efficiency is strongly influenced by dye–pollutant interactions in aqueous ...
Erkan Aksoy, Emre Alp
wiley   +1 more source