623927-11-7Relevant academic research and scientific papers
A one-pot multicomponent synthesis of naphthoxazin-3-one derivatives using amberlite IRA-400 Cl resin as green catalyst
Harichandran, Gurusamy,Parameswari, Parkunan,Shanmugam, Ponnusamy
, p. 600 - 605 (2018/06/26)
An efficient Amberlite IRA-400 Cl resin catalyzed, solvent-free, one-pot synthesis of 1- aryl-1,2-dihydro-3H-naphtho[1,2-e][1,3]oxazin-3-ones via three-component reaction of arylaldehydes, urea, and β-naphthol are described. This method offers advantages
Crystal violet lactone synthesis method (by machine translation)
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Paragraph 0017; 0018, (2017/08/23)
Crystal violet lactone synthesis method, relates to a method for synthesizing the thermo-compression is sensitive dye, in order to urea, dimethyl aniline, inter-a aminobenzoic acid, P-dimethyl amino formaldehyde and other material as the raw material for synthesis, through the Schiff base stage, urea intermediate stage, colorless crystalviolet stage and the last stage of the oxidation reaction, synthetic crystal violet lactone. Synthetic method comprises the stage of: (1) Schiff base stage: to di-methyl amino formaldehyde and urea reaction generating Schiff base; (2) urea intermediate stage: a stage on the production of products and dimethyl aniline reaction to obtain the urea intermediate; (3) colorless crystal violet lactone stage: urea intermediate and inter-dimethylamino benzoic acid as a raw material reacts to produce a colourless crystalviolet; (4) oxidation reaction stage: colorless crystalline purple after hydrogen peroxide generating crystal violet lactone catalytic oxidation. The method to avoid impurity generated synthetic method, thereby improving the yield of the product, at the same time reduces the discharge of solid wastes. (by machine translation)
