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Solid silica-based sulfonic acid as an efficient and recoverable interphase catalyst for selective tetrahydropyranylation of alcohols and phenols

✍ 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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Efficient method for tetrahydropyranylat
✍ Gustavo P. Romanelli; Graciela Baronetti; Horacio J. Thomas; Juan C. Autino πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 109 KB

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

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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