140391-41-9

Upstream product

• 578-54-1 ortho-ethylaniline 
• 4755-77-5 Ethyl oxalyl chloride 

Downstream Products

• 23949-66-8 N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)-ethanediamide 
• 1083431-00-8 dimethyl N-(2-ethylphenyl)-4-ethoxy-5-oxo-2,5-dihydro-1H-pyrrole-2,3-dicarboxylate 

Relevant academic research and scientific papers

MANUFACTURING INTERMEDIATE AND MANUFACTURING METHOD OF POLYMERIZABLE COMPOUND

PROBLEM TO BE SOLVED: To provide a manufacturing intermediate hardly generating discoloration and change of haze, when ultraviolet is radiated to a film-shaped polymer obtained by manufacturing a polymerizable compound and polymerizing a polymerizable composition containing the compound, and a manufacturing method of the manufacturing intermediate. SOLUTION: There are provided a compound represented by the formula (II), a manufacturing method of the compound, a polymerizable compound manufactured from the compound, a polymerizable composition, a polymer obtained by polymerizing the polymerizable composition, and an optical isomer using the polymer. In the formula, R1, R2 and L1 represent organic groups, n1 represents an integer of 1 to 4, when a plurality of L1 exist, it may be same or different, and neighboring L1 each other may form a condensed ring. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT

An ultraviolet absorbent preparation method (by machine translation)

The invention relates to an ultraviolet-absorbing agent preparation method, comprises the following steps: (1) D. amide esters intermediate synthesis: to oxalyl chloride ethyl ester and O-ethyl aniline as the raw material, the oxalyl chloride ethyl ester dissolved in a solvent, heating the stirring, then instillment neighbour ethyl aniline, after the reaction water elution solvent, to obtain D. amide esters intermediate; (2) N - (2 - ethoxy) - N' - (4 - ethyl-phenyl) - ethylenediamine amide product synthesis: in order to O-phenetidine and steps (1) obtained in the D. amide esters intermediate as raw materials, to Lewis base as catalyst, the temperature of the stirring, the reaction after 120 - 170 °C lower, boil off ethanol byproducts, cooling, is poured into the methanol stirring and dissolving, filtering out the insoluble matter, the temperature crystallization mother liquor, filtration, and dried to obtain the product. The preparation method, the process is simple, low requirements on equipment; the product has high purity, high yield, three wastes, environmental protection, low production cost, is suitable for industrial production. (by machine translation)