Results 21 to 30 of about 56,532 (299)

Microbial Screening Based on the Mizoroki–Heck Reaction Permits Exploration of Hydroxyhexylitaconic-Acid-Producing Fungi in Soils

Microorganisms, 2020
Recently, we developed a unique microbial screening method based on the Mizoroki–Heck reaction for itaconic acid (IA)-producing fungi. This method revealed that 37 out of 240 fungal strains isolated from soils produce vinyl compounds, including IA.
Mei Sano, Ryoki Yada, Yusuke Nomura, Takahiro Kusukawa, Hiroshi Ando, Keiji Matsumoto, Kazuhito Wada, Tomonari Tanaka, Hitomi Ohara, Yuji Aso   +9 more
doaj   +1 more source

Effects of substituents on the 1H-NMR chemical shifts of 3-methylene-2-substituted-1, 4-pentadienes [PDF]

Journal of the Serbian Chemical Society, 2003
The principle of linear free energy relationships was applied to the 1H chemical shifts of the β-vinyl proton atoms of 3-methylene-2-substituted-1,4-pentadienes.
Valentić Nataša V., Ušćumlić Gordana S.   +1 more
doaj   +1 more source

5-Vinyl-1H-tetrazole

Molbank, 2023
Highly purified 5-vinyl-1H-tetrazole was synthesized, which is in great demand in modern medicine and industry as a monomer for obtaining nitrogen-rich macromolecular compounds and a reagent for the complete synthesis of biological compounds.
Daria M. Krygina, Eugene V. Sivtsov, Yuliya N. Pavlyukova, Ekaterina N. Chernova, Mariya A. Skryl’nikova, Vadim A. Baigildin, Aleksandra M. Puzyk, Alexander A. Oskorbyn, Rostislav E. Trifonov, Pavel A. Aleshunin, Vladimir A. Ostrovskii   +10 more
doaj   +1 more source

Stereospecific cationic RAFT polymerization of bulky vinyl ethers and stereoblock poly(vinyl alcohol) via mechanistic transformation to radical RAFT polymerization of vinyl acetate

Giant, 2021
The simultaneous control of molecular weight and tacticity in cationic polymerization remains challenging. Here, we propose a new approach for stereospecific living cationic polymerization by combining cationic reversible addition-fragmentation chain ...
Mineto Uchiyama, Kotaro Satoh, Masami Kamigaito   +2 more
doaj   +1 more source

An isatin aldol adduct as a precursor to α,α’-difunctionalized methyl vinyl ketones

Results in Chemistry, 2022
Isatin-methyl vinyl ketone aldol adducts underwent efficient Morita–Baylis–Hillman (MBH) and Rauhut–Currier (RC) reactions under mild conditions to bring about a functionalization of the olefinic α-carbon, and thereby α,α’-difunctionalization of methyl ...
Ajit Kumar Jha, Deeksha, Heena Inani, Srinivasan Easwar   +3 more
doaj   +1 more source

Regioselective Synthesis of N‑Vinyl Pyrazoles from Vinyl Sulfonium Salts with Diazo Compounds

, 2023
Herein, we develop a base-promoted regioselective synthesis of N-vinyl pyrazoles from vinyl sulfonium salts with diazo compounds. This metal-free synthetic protocol provides an efficient and practical approach to diverse N-vinyl pyrazoles in good to ...
Yuanqing Xu (1676545), Yun Chai, Huayan Xu, Bingchuan Yang, Huayan Xu (10832547), Ruoyu Zhang (504163), Siyu Zhang (469556), Jingjing Zhao (129177), Pan Li, Yuanqing Xu, Ruoyu Zhang, Jingjing Zhao, Shichong Wang, Yun Chai (214793), Bingchuan Yang (1754176), Siyu Zhang, Pan Li (335711), Shichong Wang (9605688)   +17 more
core   +1 more source

Aqueous DMSO Mediated Conversion of (2-(Arylsulfonyl)vinyl)iodonium Salts to Aldehydes and Vinyl Chlorides

Molecules, 2016
Vinyl(aryl)iodonium salts are useful compounds in organic synthesis but they are under-utilized and their chemistry is under-developed. Herein is described the solvolysis of some vinyl(phenyl)iodonium salts, bearing an arylsulfonyl group, in aqueous DMSO
Eman Zawia, Wesley J. Moran
doaj   +1 more source

Variability in Bulb Organosulfur Compounds, Sugars, Phenolics, and Pyruvate among Greek Garlic Genotypes: Association with Antioxidant Properties

Antioxidants, 2020
In order to assess the diversity of Greek garlic (Allium sativum L.) landraces, 34 genotypes including commercial ones were grown in the same field and their content in organosulfur compounds, pyruvate, total sugars, and total phenolics, alongside ...
Ioanna Avgeri, Konstantina Zeliou, Spyridon A. Petropoulos, Penelope J. Bebeli, Vasileios Papasotiropoulos, Fotini N. Lamari   +5 more
doaj   +1 more source

Synthesis and Study of the Antimicrobial Activity of Modified Polyvinyl Alcohol Films Incorporated with Silver Nanoparticles

مجلة بغداد للعلوم, 2023
       A new class of biologically active nanocomposites and modified polymers based on poly (vinyl alcohol) (PVA) with some organic compounds [II, IV, V and VI] were synthesized using silver nanoparticles (Ag-NPs).
Basma J. Ahmed, Maida H. Saleem, Fadhel S. Matty   +2 more
doaj   +1 more source

Synthesis and Anticancer Activity of Some New S-Glycosyl and S-Alkyl 1,2,4-Triazinone Derivatives

Molecules, 2011
A series of S-glycosyl and S-alkyl derivatives of 4-amino-3-mercapto-6-(2-(2-thienyl)vinyl)-1,2,4-triazin-5(4H)-one (1) were synthesized using different halo compounds such as preacetylated sugar bromide, 4-bromobutylacetate, 2-acetoxyethoxy-methyl ...
Hosam A. Saad, Ahmed H. Moustafa
doaj   +1 more source