42726-73-8, A common compound: 42726-73-8, name is tert-Butyl methyl malonate, belongs to esters-buliding-blocks compound, it can change the direction of chemical reaction, and react with certain compounds to generate new functional products. A new synthetic method of this compound is introduced below.
Example 13 L3-(7-Methoxy-indol-1- lY )-3-pyridin-3- T(at)l-propyll-methyl-aznine The synthetic procedure of Example 12 is outlined in Scheme L below. SCHEME L Step; 2-Pyridin-3-ylmethylene-malonic acid tert-butyl ester methyl ester A mixture of pyridine-3-carboxaldehyde (2.72 g), propanedioic acid, 1,1-dimethylethyl methyl ester (4.42 g), piperidine (0.173 g) and benzoic acid (0.155 g) in benzene (100 ml) was heated at reflux with removal of water to a Dean-Stark trap for 12 hours. The cooled mixture was washed with bicarbonate solution, concentrated under vacuum and the residue was purified by column chromatography, eluting with ethyl acetate – hexane (3 : 7) to afford racemic 2-pyridin-3-ylmethylene-malonic acid tert-butyl ester methyl ester as an oil (3.21 g).
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, tert-Butyl methyl malonate, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; F.HOFFMANN-LA ROCHE AG; WO2005/118539; (2005); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics