Synthetic Route of 81156-68-5 ,Some common heterocyclic compound, 81156-68-5, molecular formula is C8H8Cl2O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
5-[2-(2,4-Dichloro-phenyl)-ethoxy]-isophthalic acid dimethyl ester 1.75 g of triphenylphosphine and 1 g of 5-Hydroxy-isophthalic acid dimethyl ester were dissolved in 17 ml of anhydrous THF. The solution was cooled to 0-10 C. and a solution of 1 ml DEAD in 1 ml anhydrous THF was added dropwise over 20 min. The reaction was warmed to RT and stirred for 45 min. A solution of 11.3 ml 2-(2,4-Dichlorophenyl)-ethanol in 1 ml anhydrous THF was added with cooling. The reaction was stirred at RT for 16 h, then the solvents were removed under reduced pressure. The residue was treated with n-hepane:ethyl acetate/1:1. The filtrate was dried under reduced pressure and the product was purified by silica gel chromatography, eluding with n-heptane:ethyl acetate/4:1 to n-heptane:ethyl acetate/3:1.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,81156-68-5, its application will become more common.
Reference:
Patent; Nazare, Marc; Will, David William; Peyman, Anuschirwan; Matter, Hans; Zoller, Gerhard; Gerlach, Uwe; US2002/198195; (2002); A1;,
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