3-(Trifluoromethyl)benzenepropanal is a compound useful in organic synthesis.
3-(Trifluoromethyl)benzenepropanal (cas# 21172-41-8) is a compound useful in organic synthesis.
A solution of 3-(Trifluoromethyl) benzene propanol (1.0 g, 4.90 mmol) in dichloromethane (20 ml) is cooled in a water/ice bath, treated in succession with DMSO (770 mg, 9.80 mmol) and P2O5 (1.39 g, 9.80 mmol) and left under stirring for 30 minutes, while temperature raises to 20°C. The reaction mixture is then cooled in water/ice bath and triethylamine (2.4 ml, 17.15 mmol). The resulting solution is kept under stirring while the temperature raises to 20°C. After one hour, the mixture is treated with 5 per cent HCl, the phases are separated, and the organic one is further washed with 5 per cent HCl. The organic phase is then washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure to afford 0.99 g of the aldehyde of 3-(3-(Trifluoromethyl)phenyl)propanal in quantitative yield.
[1] Patent: EP2327684, 2011, A1. Location in patent: Page/Page column 6
[2] Patent: US2011/124917, 2011, A1. Location in patent: Page/Page column 3-4
[3] Journal of the Indian Chemical Society, 2013, vol. 90, # 8, p. 1259 - 1261
[4] Patent: WO2014/16847, 2014, A1. Location in patent: Page/Page column 6-7
[5] Tetrahedron Letters, 2004, vol. 45, # 45, p. 8355 - 8358
