Solid silica-based sulfonic acid as an efficient and recoverable interphase catalyst for selective tetrahydropyranylation of alcohols and phenols
β Scribed by Babak Karimi; Maryam Khalkhali
- Book ID
- 108211472
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 140 KB
- Volume
- 232
- Category
- Article
- ISSN
- 1381-1169
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π SIMILAR VOLUMES
A simple and efficient procedure to form 2-tetrahydropyranyl acetals of phenols and alcohols is reported. Wells-Dawson heteropolyacid catalyst is used both in bulk form or supported on silica, reaction conditions include room temperature and toluene as solvent. Fast deprotection of THP-acetals can b
Trisubstituted imidazoles have been synthesized in high yields in the presence of silica sulfuric acid as a catalyst. The reaction is carried out in water, a very green solvent, under reflux conditions. The reaction work-up is simple and the catalyst is easily separated from the products by filtrati