Diisobutylaluminum hydride → 5-Bromo-2-(2-thienylmethoxy)benzenemethanol

Participants

Reaction Conditions

Reaction Steps

A solution of methyl 5-bromo-2-(2-thienylmethoxy)benzoate (1.6 g, 4.9 mmol) in dichloromethane (20 ml) was cooled to -85° C. A solution of DIBAL (5.8 ml, 1N in CH2Cl2) was added dropwise. The temperature was maintained below -75° C. for 30 minutes and then warmed to -50° C. over 21/2% hours. The reaction mixture was quenched with 1N HCl, washed with aqueous sodium hydrogen carbonate solution, dried (MgSO4) and evaporated. The product was purified by chromatography (eluant: diethyl ether/hexane) to give 5-bromo-2-(2-thienylmethoxy)benzyl alcohol a colourless gum (0.53 g, 36.4%).

Provenance & Evidence