Results 1 to 10 of about 20,522 (178)

Dataset on intergenic spacer sequences of the chloroplast genome and potential DNA barcodes of Adinandra glischroloma Hand.-Mazz. from Vietnam [PDF]

Data in Brief
Adinandra glischroloma Hand.-Mazz. is a woody species of the genus Adinandra (Pentaphylacaceae), a taxonomic group in which species delimitation is often complicated by high morphological similarity. Moreover, genetic information for A.
Hang Thi Thuy Pho, Nga Thi Thu Nguyen, Thuong Danh Sy, Quan Huu Nguyen, Mau Hoang Chu   +4 more
doaj   +2 more sources

XAT‐Catalysis for Intramolecular Biaryl Synthesis

Angewandte Chemie - International Edition
AbstractRadical ipso‐substitution offers an alternative to organometallic approaches for biaryl synthesis, but usually requires stoichiometric reagents such as tributyltin hydride. Here, we demonstrate that visible light photoredox catalysis can be used for ipso‐biaryl synthesis, via a halogen‐atom transfer (XAT) regime.
Thomas Sephton, Sam Butterworth, Michael F Greaney   +2 more
exaly   +4 more sources

1,2-Aminoxyalkylation of alkenes with alkyl iodides and TEMPONa through SET- and XAT-processes

Chemical Science, 2023
1,2-Aminoxyalkylation of alkenes with alkyl iodides and TEMPONa in combination with an aryldiazonium salt as an XAT mediator is reported.
Armido Studer
exaly   +3 more sources

Giese-type alkylation of dehydroalanine derivatives via silane-mediated alkyl bromide activation [PDF]

Beilstein Journal of Organic Chemistry
The rising popularity of bioconjugate therapeutics has led to growing interest in late-stage functionalization (LSF) of peptide scaffolds. α,β-Unsaturated amino acids like dehydroalanine (Dha) derivatives have emerged as particularly useful structures ...
Perry van der Heide, Michele Retini, Fabiola Fanini, Giovanni Piersanti, Francesco Secci, Daniele Mazzarella, Timothy Noël, Alberto Luridiana   +7 more
doaj   +2 more sources

Photocatalytic anti-Markovnikov hydro- and haloazidation of alkenes [PDF]

Nature Communications
Hydroazidation of alkenes provides a direct entry to alkyl azides, which are prevalent structural motifs in medicine development and chemical biology probes.
Kang-Jie Bian, Shijin Yu, Ying Chen, Qiming Liu, Xiaowei Chen, David Nemoto, Shih-Chieh Kao, Angel A. Martí, Julian G. West   +8 more
doaj   +2 more sources

Towards carotenoid biofortification in wheat: identification of XAT-7A1, a multicopy tandem gene responsible for carotenoid esterification in durum wheat

BMC Plant Biology, 2023
Yellow pigment content, mainly due to the accumulation of carotenoids, is a quality trait in durum wheat grain as it confers the bright yellow color to pasta preferred by consumers.
C Rodríguez-Suárez , MD Requena-Ramírez , D Hornero-Méndez , SG Atienza   +3 more
doaj   +1 more source

Electrochemical halogen-atom transfer alkylation via α-aminoalkyl radical activation of alkyl iodides

Nature Communications, 2023
Alkyl halides, widely recognized as important building blocks and reagents in organic synthesis, can serve as versatile alkyl radical precursors in radical-based transformations.
Xiang Sun, Ke Zheng
doaj   +1 more source

REMARKS ON THE NAME OF THE WESEKH-COLLAR IN THE OLD KINGDOM [PDF]

Shedet, 2022
This paper examines the different early attestations of the name of the broad collar, wesekh. The earlier studies on this collar, based on the Berlin dictionary, revealed that the name of this broad collar is first attested in the Middle Kingdom. However,
Ahmed Ouda
doaj   +1 more source

Mediation of a GDSL Esterase/Lipase in Carotenoid Esterification in Tritordeum Suggests a Common Mechanism of Carotenoid Esterification in Triticeae Species

Frontiers in Plant Science, 2020
Carotenoids are essential in human diet, so that the development of programs toward carotenoid enhancement has been promoted in several crops. The cereal tritordeum, the amphiploid derived from the cross between Hordeum chilense Roem. et Schulz.
María Dolores Requena-Ramírez, Sergio G. Atienza, Dámaso Hornero-Méndez, Cristina Rodríguez-Suárez   +3 more
doaj   +1 more source

Transition-metal free C–N bond formation from alkyl iodides and diazonium salts via halogen-atom transfer

Nature Communications, 2022
The pursuit of efficient C–N bond formation is a prime focus of synthetic organic chemistry. Here, the authors documented a base promoted amination between alkyl iodides and diazonium salts via halogen-atom transfer (XAT) process.
Jing Zhang, Min Jiang, Chang-Sheng Wang, Kai Guo, Quan-Xin Li, Cheng Ma, Shao-Fei Ni, Gen-Qiang Chen, Yan Zong, Hua Lu, Li-Wen Xu, Xinxin Shao   +11 more
doaj   +1 more source