With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.227960-12-5,Methyl 5-methylindole-3-carboxylate,as a common compound, the synthetic route is as follows.
1.63 g (11.8 [MMOL)] of potassium carbonate are added at [25C] under an argon atmosphere to 0.895 g (4.73 [MMOL)] of [3-METHOXYCARBONYL-5-METHYL-1 H-INDOLE] in 10 cm3 of dimethyl sulphoxide. After stirring at [25C] for 0.5 hour, 0.774 g (4.73 [MMOL)] of 2-chloroquinoline is added. After stirring at [100C] for 48 hours, the reaction mixture is cooled and diluted with 100 cm3 ethyl acetate and then washed with 3 times 50 cm3 of water and 25 cm3 of saturated aqueous sodium chloride solution. After separating the phases by settling, the organic phase is dried over anhydrous magnesium sulphate, filtered and concentrated to dryness under reduced pressure (2.7 kPa) to give 1.2 g of a residue which is recrystallised under hot conditions from 30 cm3 of cyclohexane and 6 cm3 of ethyl acetate to give 0. 8 g of [3-METHOXYCARBONYL-5-METHYL-] [1-(QUINOL-2-YL)-1 H-INDOLE] in the form of a white solid melting at [143C.], 227960-12-5
227960-12-5 Methyl 5-methylindole-3-carboxylate 2759866, aindole-building-block compound, is more and more widely used in various fields.
Reference：
Patent; AVENTIS PHARMA DEUTSCHLAND GMBH; WO2004/7480; (2004); A1;,
Indole alkaloid derivatives as building blocks of natural products from?Bacillus thuringiensis?and?Bacillus velezensis?and their antibacterial and antifungal activity study
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles