Microwave-assisted Claisen Rearrangement of 1-Allyloxy-4-hydroxybenzene in the Presence of Metal Salt

2021 ◽  
Vol 07 ◽  
Author(s):  
Fumiyoshi Ozaki ◽  
Yutaka Okada
Keyword(s):  
Alkali Metal ◽  
Lewis Acid ◽  
Claisen Rearrangement ◽  
Metal Salt ◽  
Alkali Metal Salt ◽  
Metal Salts ◽  
Hydroxyl Group ◽  
Microwave Assisted ◽  
Ethereal Oxygen

: Microwave-assisted Claisen rearrangement of allyloxybenzene with a hydroxyl group was conducted in the presence of metal salts. The rearrangement was promoted in the presence of an alkali metal salt, because the reaction substrate was converted to a phenoxide-type ion, which can efficiently absorb microwaves. In contrast, a Lewis acid was strongly coordinated to the ethereal oxygen, and this structure could also absorb microwaves efficiently.

Rayon-based activated carbon fibers treated with both alkali metal salt and Lewis acid

2008 ◽  
Vol 109 (1-3) ◽  
pp. 138-146 ◽  
Author(s):  
Yuhan Chen ◽  
Qilin Wu ◽  
Pan Ning ◽  
Gong Jinghua ◽  
Pan Ding
Keyword(s):  
Activated Carbon ◽  
Alkali Metal ◽  
Carbon Fibers ◽  
Lewis Acid ◽  
Metal Salt ◽  
Alkali Metal Salt ◽  
Activated Carbon Fibers

scholarly journals Synthesis and Bioactivity of Quinone Mono- and Dioxime Salts

2020 ◽  
Vol 10 (5) ◽  
pp. 6148-6156
Keyword(s):  
Alkali Metal ◽  
Phytophthora Infestans ◽  
Metal Salt ◽  
Human Life ◽  
Alkali Metal Hydroxide ◽  
Divalent Metal ◽  
Metal Salts ◽  
Zinc Salts ◽  
Harmful Organisms ◽  
Two Stages

Eliminating all kinds of harmful organisms is an important task in agriculture, food production, and human life. Quinone oximes and their salts are good bioactive compounds to attain this aim. The alkali metal salts of quinone mono- and dioxime have been synthesized by the reaction of the corresponding quinone oxime with alkali metal hydroxide. The divalent metal salts have been obtained in two stages. The first stage is the synthesis of the sodium salt of the quinone oxime. The second step is the reaction of the latter with a divalent metal salt. Copper and zinc salts of [(4-oxocyclohexa-2,5-dien-1-ylidene)amino]oxidanide have the highest insecticidal activity against the housefly and rice weevil. The death index is 90–100%. Copper {[2-methyl-4-oxo-5-(propan-2-yl)cyclohexa-2,5-dien-1-ylidene]amino}oxidanide shows good activity against Phytophthora infestans. Inhibition of the growth and development of the Phytophthora infestans is 80%.

scholarly journals Correction: A binary catalyst system of a cationic Ru–CNC pincer complex with an alkali metal salt for selective hydroboration of carbon dioxide

2017 ◽  
Vol 53 (2) ◽  
pp. 459-459
Author(s):  
Chee Koon Ng ◽  
Jie Wu ◽  
T. S. Andy Hor ◽  
He-Kuan Luo
Keyword(s):  
Carbon Dioxide ◽  
Alkali Metal ◽  
Metal Salt ◽  
Alkali Metal Salt ◽  
Catalyst System ◽  
Pincer Complex ◽  
Binary Catalyst

Correction for ‘A binary catalyst system of a cationic Ru–CNC pincer complex with an alkali metal salt for selective hydroboration of carbon dioxide’ by Chee Koon Ng et al., Chem. Commun., 2016, 52, 11842–11845.

Alkali Metal Salt as Catalyst for Direct Synthesis of Carbamate from Carbon Dioxide

2018 ◽  
Vol 6 (5) ◽  
pp. 6675-6681 ◽  
Author(s):  
Qiao Zhang ◽  
Hao-Yu Yuan ◽  
Norihisa Fukaya ◽  
Jun-Chul Choi
Keyword(s):  
Carbon Dioxide ◽  
Alkali Metal ◽  
Metal Salt ◽  
Direct Synthesis ◽  
Alkali Metal Salt

scholarly journals Study on Tensile Creep Behavior of 12Cr1MoV Alloy Steel under High-Temperature Alkali Metal Salt Environment for Solar Thermal Power Generation

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Jianjun He ◽  
Kaijun Yang ◽  
Gang Wang ◽  
Wei Li ◽  
Jiangyong Bao ◽  
...  
Keyword(s):  
High Temperature ◽  
Alkali Metal ◽  
Creep Behavior ◽  
Metal Salt ◽  
Thermal Power ◽  
Alkali Metal Salt ◽  
Tensile Creep ◽  
Mixed Salt ◽  
Solar Thermal Power ◽  
Solar Thermal Power Generation

The heat exchange tubes of solar thermal power generation work in molten salt environment with periodic temperature change. In order to reveal the tensile creep behavior of 12Cr1MoV pipeline steel under high-temperature alkali metal salt environment, the tensile creep behavior of 12Cr1MoV alloy under different applied load and reaction temperature in high-temperature alkali metal chloride salt environment was studied. The results show that the deformation of 12Cr1MoV alloy in 600°C, NaCl-35%KCl mixed salt environment is mainly controlled by diffusion creep; with the increase of stress, the creep life of 12Cr1MoV alloy decreases. The creep fracture mechanism of 12Cr1MoV alloy in 600°C, NaCl-35%KCl mixed salt environment is intergranular ductile fracture; the increase of temperature will enhance the activation and oxidation of the chlorine atoms, thereby accelerating the corrosion of the base metal and increasing the spheroidization speed of the pearlite matrix, and the creep deformation rate of the alloy increases with increasing temperature.

Dithiolate und Dithiolato-Komplexe, I

1975 ◽  
Vol 30 (3-4) ◽  
pp. 219-225 ◽  
Author(s):  
Ortfried Hackelberg ◽  
Reinhard Kramolowsky
Keyword(s):  
Molecular Weight ◽  
Alkali Metal ◽  
Electric Conductivity ◽  
Magnetic Measurements ◽  
Metal Salt ◽  
Alkali Metal Salt ◽  
Esr Spectra

The complexes Bis(η-cyclopentadienyl)-1,1-dithiolatovanadium(IV) [VCp2(S2C=Y)] (Y = S,NCN,C(CN)2,C(CN) (CO2Et),C(CO2Et)2)* and Bis(η-cyclopentadienyl)-1,2-dicyanoethylene-1,2-dithiolatovanadium(IV) [VCp2(S2C2(CN)2)] are prepared by reaction of [VCp2Cl2] and the appropiate alkali metal salt K2S2C=Y or Na2S2C2(CN)2. The complexes are characterized by molecular weight, electric conductivity and magnetic measurements. The IR, electronic and ESR spectra are discussed.

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