201656-71-5Relevant academic research and scientific papers
Fenhexamid and analysis method thereof
-
Paragraph 0053; 0055-0058; 0067-0068; 0074-0075, (2018/11/03)
The invention discloses fenhexamid and an analysis method thereof. The fenhexamid is prepared from aniline, hydrochloric acid, sodium nitrite solution, 2,3-dichlorophenol, sodium hydroxide, water, ethyl alcohol, sodium hydrosulfite, 1-methyl cyclohexanoic acid, methylene dichloride, N,N-dimethyl formamide, thionyl chloride, ethyl acetate and triethylamine. The fenhexamid content reaches 98% or above, and yield reaches 86-87%; in a fenhexamid analysis process, sodium hydrosulfite adopted for azo reduction for generating 2,3-dichloro-4-hydroxylaniline is high in reducibility and quick in weak alkaline reduction reaction, and the conversion rate reaches 98% or above by cross input of sodium hydroxide and sodium hydrosulfite; pH is kept in a range of 6-7 by acid reflux after adding of sodium hydrosulfite. Fenhexamid production conditions are mild, and easiness in operation, high safety, high total yield, low cost and suitableness for large-scale production and application to enterprises are realized.
Nanosilica/NaNO2: Novel heterogeneous system for synthesis of Azo compounds
Jirandehi, Hassan Fathinejad,Mirzaeian, Marjan,Mirzaeian, Mojtaba
experimental part, p. 376 - 377 (2011/07/07)
Various azo compounds are synthesized by electrophonic substitution reaction in the presence of Nanosilica/NaNO2as a catalyst. Copyright Taylor & Francis Group, LLC.
Synthesis of some aryl azo-compounds under mild conditions
Jirandehi, Hasan Fathinejad,Mobinikhaledi, Akbar
experimental part, p. 6851 - 6854 (2012/07/03)
Some aryl azo compounds 2(a-h) were synthesized by reaction of corresponding aromatic amine and phenol derivatives under mild conditions. The yields of the products after recrysallization from acetic acid were in the order of 65-95 %. IR and 1H
