6903-65-7Relevant academic research and scientific papers
AZOLE DERIVATIVE, INTERMEDIATE COMPOUND, METHOD FOR PRODUCING AZOLE DERIVATIVE, AGRICULTURAL OR HORTICULTURAL CHEMICAL AGENT, AND PROTECTIVE AGENT FOR INDUSTRIAL MATERIAL
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Paragraph 0358-0359, (2020/12/14)
It is provided a plant disease controlling agent having low toxicity to human and animals and excellent handling safety, and showing excellent controlling effects on various plant diseases and high antibiotic action to plant disease germs. A compound repr
Copper-mediated synthesis of mono- and dichlorinated diaryl ethers
?ermák, Jan K.,Církva, Vladimír
supporting information, p. 4185 - 4188 (2014/07/22)
An efficient synthesis of polychlorinated diphenyl ethers (PCDEs) using the Cu(OAc)2-catalyzed Chan-Lam coupling reaction is described. A library of all possible mono- and dichlorinated diphenyl ether congeners was prepared and characterized using MS, 1H, and 13C NMR spectroscopy, and Kovats retention indices. Our approach, using the optimized reaction conditions (i.e., reaction temperature, oxidizing atmosphere and base), significantly improves and simplifies the process compared to previously reported syntheses.
Synthesis, Structure Verification, and Chromatographic Relative Retention Times for Polychlorinated Diphenyl Ethers
Nevalainen, Tapio,Koistinen, Jaana,Nurmela, Pirjo
, p. 1341 - 1347 (2007/10/03)
Fifty-four polychlorinated diphenyl ether (PCDEs) congeners were synthesized, and their structures were confirmed by mass spectrometry and proton magnetic resonance spectroscopy. The gas chromatographic relative retention times (RRT) for the PCDEs were determined relative to a reference standard, -tetrachlorobiphenyl (PCB 77) on the fused silica capillary columns of SE-54 and OV-1701. The retention times for PCDEs increased with the increasing number of vicinal chlorines within a series of isomers. The chlorine substitution patterns of PCDEs were used to develop a method for predicting RRTs for congeners that were not synthesized.
Process for preparing chlorinated diphenyl ethers
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, (2008/06/13)
The invention relates to a novel process for preparing chlorodiphenyl ethers of the formula I STR1 in which R is hydrogen or chlorine, which comprises heating a material of the formula III STR2 in which X is one equivalent of an alkali metal or alkaline earth metal ion and R is as defined above, in an excess of a dichlorobenzene of the formula II STR3 in the presence of a copper catalyst and of an aprotic solvent as cocatalyst at temperatures of 120°-220° C.
