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
(+/-)-fralphan5-l-(Benzo[b]thiophene-2-carbonyl)-2-methyl-l,2,3,4-tetrahydro-quinoline-4- carboxylic acid (4-chloro-phenyl)-ethyl-amide was made following general procedure A, substituting benzo[b]thiophene-2-carbonyl chloride for 4-trifluoromethyl-benzoyl chlorided. Benzo[b]thiophene-2-carbonyl chloride was prepared by reaction of thianaphthene-2-carboxylic acid with oxalyl chloride and dimethylformamide in methylene chloride. The crude l-(benzo[b]thiophene-2-carbonyl)-2- methyl-l,2,3,4-tetrahydro-quinoline-4-carboxylic acid (4-chloro-phenyl)-ethyl-amide was isolated as a mixture of cis and trans isomers. Purification by silica gel chromatography (1% methanol / methylene chloride) followed by purification via HPLC yielded (+/-)-/rans-2-methyl-l-(pyrimidine-5- carbonyl)-l,2,3,4-tetrahydro-quinoline-4-carboxylic acid (4-chloro-phenyl)-ethyl-amide (34%). 1H-NMR (CDCl3) delta: 1.02 – 1.18 (m, 6H), 1.65 – 1.75 (m, IH), 2.55 – 2.65 (m, IH), 3.60 – 3.70 (m, IH),3.80 (q, 2H), 5.05 – 5.15 (m, IH), 6.70 (d, IH), 6.80 – 7.00 (m, 3H), 7.20 -7.40 (m, 4H), 7.45 (s, IH),7.50 (d, 2H), 7.70 (d, IH), 7.80 (d, IH). MS m/z: 489/491 (M+l).
6314-28-9 Benzo[b]thiophene-2-carboxylic acid 95864, abenzothiophene compound, is more and more widely used in various fields.
Reference£º
Patent; MILLENNIUM PHARMACEUTICALS, INC.; WO2006/91674; (2006); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem