A fast and practical approach to tetrahydropyranylation and depyranylation of alcohols using indium triflate
摘要:
Indium triflate-mediated tetrahydropyranylation of alcohols in dichloromethane and depyranylation of these products in aqueous methanol utilizing the same reagent but different molar ratio is described. In addition, indium triflate-promoted conversion of tetrahydropyran ethers to their corresponding acetates has also been described. (C) 2002 Elsevier Science Ltd. All rights reserved.
Zirconium sulfophenyl phosphonate as a heterogeneous catalyst in tetrahydropyranylation of alcohols and phenols
摘要:
Zirconium Sulfophenyl Phosphonate Zr(O3PCH3)(1.2)(O3PC6H4SO3H)(0.8) was found to be an efficient heterogeneous catalyst for the tetrahydropyranylation of alcohols and phenols. (C) 1998 Elsevier Science Ltd. All rights reserved.