Tetrahydrofuran → 3-Chlorobenzyl alcohol

Participants

Reaction Conditions

Reaction Steps

A solution of 2-chloro-5-iodobenzyl alcohol (0.537 g, 2.0 mmol) in THF (10 mL) was added to sodium hydride (88 mg of a 60% dispersion in mineral oil, 2.2 mmol) at 0° C. with stirring under nitrogen. After 5 min the mixture was cooled to −78° C. and n-butyl-lithium (2.5 M in hexanes, 1.66 mL, 4.15 mmol) was added over 6 min. After a further 5 min a solution of N-(4-methoxyphenyl)-N-(-2,2,2-trifluoroethylidene)amine (0.406 g, 2.0 mmol) in THF (2 mL) was added over 5 min. After a further 5 min the reaction was quenched with saturated ammonium chloride solution and the mixture was warmed to ambient temperature and partitioned between ethyl acetate and brine. The organic layer was dried (Na2SO4) and evaporated to a gum which was purified by chromatography on silica (eluting with 2% methanol/chloroform) to give N-{1-[4-chloro-2-(hydroxymethyl)phenyl]-2,2,2-trifluoroethyl}-N-(4-methoxyphenyl)amine as a 1:1.7 mixture with 3-chlorobenzyl alcohol (0.38 g) as a gum: MS 346.4 (M+1).

Provenance & Evidence