According to the analysis of related databases, 558-42-9, the application of this compound in the production field has become more and more popular.
Synthetic Route of 558-42-9, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 558-42-9, name is 1-Chloro-2-methyl-2-propanol. This compound has unique chemical properties. The synthetic route is as follows.
To a solution of 4-hydroxy-3,5-dimethylbenzonitrile (2.00 g, 13.5 mmol) and 1-chloro-2-methyl propan-2-ol (8.85 g, 81.5 mmol) in ethanol (50 mL) was added potassium carbonate (7.5 g, 54 mmol) and water (5 ml_). The reaction mixture was stirred at reflux for 24 h and cooled to RT. The precipitated solid was filtered off and washed with water. The solid was dissolved in ethyl acetate (100 mL), washed with water (50 mL), brine (50 mL), and dried over anhydrous Na2SCU. Removal of solvent gave 4-(2-hydroxy-2-methylpropoxy)-3,5- dimethyl benzonitrile (2,9 g, 97percent) as a white solid.[0113] To a solution of 4-(2-hydroxy-2-methylpropoxy)-3,5-dimethyl benzonitrile (2.90 g, 13.2 mmol) in anhydrous DMF (20 mL) was added imidazole (2.7 g, 40 mmol) and terf-butyldimethylsilylchloride (2.19 g, 14.6 mmol). The reaction mixture was stirred at RT under nitrogen for 3 d. Water (200 mL) was added and the mixture was extracted with ethyl acetate (200 mL). The organic layer was washed with water (2×100 mL) and brine (100 mL), and dried over anhydrous Na2SO4. The solvent was removed under reduced pressure and the crude compound was purified by column chromatography to give 4-[2-(tert- butyldimethylsilanyloxy)-2-methylpropoxy]-3,5-dimethylbenzonitrile (2.24 g, 54percent). n-Butyl lithium (6.2 mL, 6.6 mmol, 1.6 M solution in hexanes) was added to a solution of 2,4-dimethoxy-6-/v”-dimethylbenzarnide (0,9 g, 4.3 mmol) in anhydrous THF (10 mL) drop-wise at -10°C over a period of 10 rnin under nitrogen. The stirring was continued at 0″C for 1 h. The reaction mixture was cooled to -50°C. A solution of 4-[2-(tert-butyidimethylsilanyloxy)-2-methylpropoxy]-3,5- dimethylbenzonitrile (1.58 g, 4,73 mmol) in anhydrous THF (5 mL) was quickly added. The cooiing bath was removed and the reaction mixture was allowed to warm to RT. The stirring was continued at RT for 1 h. An aqueous ammonium chloride solution (10 mL) was added followed by ethyl acetate (100 mL). The organic layer was separated, washed with water (10 mL) and dried (Na2SO4). The solvent was removed under reduced pressure and the crude compound was purified by column chromatography (silica gel 230-400 mesh; 0-5percent methanol in CH2CI2 as eluent) to give 3-{4-[2-(tert- butyldimethylsilanyloxy)-2-methylpropoxy]- 3,5-dimethylphenyl}-6,8-dimethoxy-2H-isoquinolin-1-one (0.82 g, 37percent), as a white solid.[0114] The above compound (0.42 g, 0.82 mmol) was dissolved in anhydrous THF (20 mL). Tetrabutylammonium fluoride (4.1 mL, 1.0 M solution in THF) was added at 0°C. The reaction mixture was stirred at 0°C for 10 min, then at RT for 2 h and then stirred at 70°C for 24 h. The mixture was cooled to RT.Saturated aqueous ammonium chloride (30 mL) was added. The organic layer was separated, washed with water, brine, and dried over anhydrous Na2SO4. The solvent was removed under reduced pressure. The crude product was purified by column chromatography (silica gel 230-400 mesh; 0-4percent methanol in CH2Cl2 as eluent) to give 3-(4-(2-hydroxy-2-methylpropoxy)-3,5-dimethylphenyl)- 6,8-dimethoxyisoquinolin-1(2H)-one (0.15-g, 46percent), as a white solid. Selected data: MS (ES) m/z: 397.98; MP 252-254 °C at decomposition.
According to the analysis of related databases, 558-42-9, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Resverlogix Corp.; WO2008/92231; (2008); A1;,
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