2-(Oxiran-2-ylmethoxy)benzonitrile → N-2-[(3-(2-cyanophenoxy)-2-hydroxypropyl)amino]ethyl-N'-(3,5-dimethoxyphenyl)thiourea

Participants

Reaction Steps

A solution of 1.28 g (7.3 mmoles) of 2,3-epoxy-1-(2-cyanophenoxy)propane, 7, in 30 ml of isopropyl alcohol (warmed and sonicated) was treated with 1.86 g (7.3 mmoles) of 14 all at once. This was heated under reflux for 2 hours and stirred overnight at room temperature. After this, a small amount of solid (860 mg) was removed and the solution was concentrated to 2.3 g of semi-solid gum. This was chromatographed over 150 g of silica gel 60 using 10% (v/v) CH3OH/CHCl3 saturated with NH3. Three fractions of 150 ml each were taken after an 800-ml forerun. The third fraction provided 1.31 g of a white foam. This was chromatographed again, taking 10-ml fractions. Cuts 17, 18 and 19 provided 80 mg (2.5%) of 15, m.p., 45°-55° C. Mass spectrum, m/e 430 (M+), base peak, m/e 195. Liquid chromatography showed 93.6% purity.

Provenance & Evidence