The transformations of simple methyl-substituted 1,2-diols (ethanediol, 1,2-propanediol, (±)-and meso-2,3-butanediol, 2-methyl-2,3-butanediol and 2,3-dimethyl-2,3-butanediol) have been studied on NaX, NaY, NaHX and NaHY zeolites. The effects of the structure of the diol, the type of zeolite and the reaction conditions have been correlated with the two main dehydration reactions, the pinacol rearrangement (∼60-90%) leading to the formation of carbonyl compounds and 1,2-elimination (∼10-30%) yielding unsaturated alcohols and dienes. Factors affecting selectivities are discussed.
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry