Methanol → 3-Methoxyisophthalaldehydic acid methyl ester

Participants

Reaction Steps

To a -78° to -100° solution of 1.0 mol of 3-methoxyisophthalic acid dimethyl ester in 1-10 l of toluene is slowly added 1.0 mol of diisobutylaluminum hydride as a 1 M solution in n-hexane. The reaction is stirred for 3 hours after the addition and then quenched by the addition of 10 mol of anhydrous methanol. The reaction is allowed to warm to room temperature and stirred until a filterable precipitate forms. The reaction is filtered and the filtrate evaporated to a residue. The residue is purified by crystallization, distillation or chromatography to yield 3-methoxyisophthalaldehydic acid methyl ester.

Provenance & Evidence