New learning discoveries about 206347-30-0

As the paragraph descriping shows that 206347-30-0 is playing an increasingly important role.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.206347-30-0,7-Bromo-2,3-dihydrobenzofuran,as a common compound, the synthetic route is as follows.

[1289] A first intermediate compound 4-(2,3-Dihydro-benzofuran-7-yl)-piperazine-1-carboxylic acid tert-butyl ester, was produced as follows: A solution of bis-(dibenzylideneacetone)palladium(0) (4.92 g, 0.16 mol) and toluene (2500 ml) was degassed with nitrogen for 15 minutes. (Note: Degassing was continued during each addition. Time between additions was 15 minutes.) Then added was tri-o-tolylphosphine (4.92 g, 0.16 mol) then sodium t-butoxide (53.8 g, 0.56 mol) then Boc-piperazine (86.8 g, 0.47 mol) then a solution of 7-bromo-2,3-dihydro-benzofuran (79.6 g, 0.40 mol, prepared according to Tetrahedron Lett. 1998, 39, 2219) in toluene (100 ml). The reaction mixture was stirred at reflux for 16 h. By TLC, all starting material had been consumed. The cooled reaction mixture was filtered over a pad of Celite. The filtrate was concentrated under reduced pressure and the residue was triturated with ethyl acetate in heptane (50%). The insoluble material was filtered off and that filtrate was concentrated under reduced pressure. The crude residue was purified by flash column chromatography using ethyl acetate in heptane (50%) to give 46.4 g (38% yield) of the first intermediate compound as a tan solid., 206347-30-0

As the paragraph descriping shows that 206347-30-0 is playing an increasingly important role.

Reference£º
Patent; Clark, Jerry D.; Davis, Jamie M.; Favor, David; Fay, Lorraine K.; Franklin, Lloyd; Henegar, Kevin E.; Johnson, Douglas S.; Nichelson, Brian J.; Ou, Ligong; Repine, Joseph Thomas; Walters, Michael A.; White, Andrew David; Zhu, Zhijian; US2005/43309; (2005); A1;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem