Application of 13101-88-7, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 13101-88-7 as follows.
1.- 2,5-dimethyl-2-(6-methoxynaphthalen-2-yldiazenyl)furan-3(2H)-one To a suspension of 2-amino-6-methoxynaphthalene (2.6 g, 15 mmol) in H2O (40 ml), HCl conc. was added (8 ml), it was cooled in an ice bath and a NaNO2 solution (1.19 g, 17.3 mmol) in H2O (18 ml) was added dropwise shaking the mixture at 0?C during 30 minutes. The previous solution was diluted in H2O (80 ml), 2,5-dimethylfuran-2,3-dihydrofuran-3-one (1.94 g, 17.3 mmol) was added and was left shaking during 2 hrs at room temperature resulting in a yellow precipitate. It was filtered, washed with water and dried. It was thereby obtained 2,5-dimethyl-2-(6-methoxynaphthalen-2-yldiazenyl)furan-3-one (4.22 g, 95 %) in a solid crude form of an ocre-yellow color that was used directly in the following synthesis step. 1H-NMR (300 MHz, CDCl3) delta ppm: 8.35 (s, 1H), 7.85 (d, J=8,8Hz, 1H), 7.75-7.7 (m, 2H), 7.2 (m, 2H), 5.55 (s, 1H), 3.95 (s, 3H), 2.45 (s, 3H), 1.75 (s, 3H).
According to the analysis of related databases, 13101-88-7, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Laboratorios Del. Dr. Esteve, S.A.; EP2113501; (2009); A1;,
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