With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6314-28-9,Benzo[b]thiophene-2-carboxylic acid,as a common compound, the synthetic route is as follows.
6314-28-9, General procedure: Following a described procedure [24,42,43] with a few modifications, sodium borohydride wasslowly added to a suspension of selenium powder in water at room temperature or in ethanol, N2atmosphere and 0 C, and stirred until the formation of the typical colorless solution of NaHSe. Then,the corresponding aroyl or heteroaroyl chloride was added. Temperature and time of reaction varieddepending on the compounds. Methylation was achieved through the addition of methyl iodide(in excess). Purification was performed by several washings, recrystallization in different solvents orcolumn chromatography. In those cases where the acyl chloride was not available, it was formed bythe reaction of the corresponding carboxylic acid with SOCl2 for 1-8 h at reflux. Solvent was removedunder vacuum by rotatory evaporation, and the product was then washed three times with dry toluene,which was also eliminated by rotatory evaporation.
As the paragraph descriping shows that 6314-28-9 is playing an increasingly important role.
Reference£º
Article; Diaz-Argelich, Nuria; Encio, Ignacio; Plano, Daniel; Fernandes, Aristi P.; Palop, Juan Antonio; Sanmartin, Carmen; Molecules; vol. 22; 8; (2017);,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem