With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.95-15-8,Thianaphthene,as a common compound, the synthetic route is as follows.
EXAMPLE 213 5-(1-decynyl)-2-benzo[b]thiophenecarboxaldehyde To a solution of 5 (1-decynyl)benzo[b]thiophene (20.0 g) in dry ether (150 ml), under nitrogen, was added n-butyllithium (2.5M in hexanes) (32.6 ml) dropwise, with stirring at room temperature. The solution was stirred at room temperature, under nitrogen, for 2.5 hrs and then cooled to -60 C. A solution of dry dimethylformamide (5.95 g) in dry ether (15 ml) was added dropwise, and the reaction mixture was allow to warm to room temperature. The reaction mixture was quenched with ammonium chloride solution and the layers separated. The aqueous phase was extracted with ether, the organic extracts combined, dried over anhydrous sodium sulfate, filtered, and the filtrate was evaporated. The residue was flash chromatographed (silica: 3-4%, ethyl acetate:heptane). The appropriate fractions were collected and evaporated. The residue was recrystallized from heptane to give 11.5 g (52.0%) of product, mp 45-47 C. Analysis: Calculated for C19 H22 OS: 76.47%C 7.43%H Found: 76.63%C 7.36%H, 95-15-8
95-15-8 Thianaphthene 7221, abenzothiophene compound, is more and more widely used in various fields.
Reference£º
Patent; Hoechst-Roussel Pharmaceuticals Incorporated; US5360811; (1994); A;,
Benzothiophene – Wikipedia
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