Efficient Method for Tetrahydropyranylation of Alcohols and Phenols and Deprotection of THP Ethers using H<sub>14</sub>[NaP<sub>5</sub>W<sub>30</sub>O<sub>110</sub>] as a Green Catalyst
作者:Majid M. Heravi、Masoumeh Haghighi、Fatemeh Derikvand、Fatemeh F. Bamoharram
DOI:10.1080/00397910600907274
日期:2006.10.1
Abstract A simple and effective method for tetrahydropyranylation of alcohols and phenols and the regeneration of THP ethersusing a catalytic amount of H14[NaP5W30O110] is reported.
Deprotection of Trimethylsilyl and Tetrahydropyranyl Ethers and of Ethylene Acetals with Tetramethylammonium Chlorochromate
作者:Abdol R. Hajipour、Arnold E. Ruoho
DOI:10.1081/scc-120016344
日期:2003.1.4
Abstract This paper describes the preparation of tetramethylammonium chlorochromate (TMACC) as a new and efficient reagent for the oxidative deprotection of trimethylsilyl and tetrahydropyranylethers or ethylene acetals and ketals to the corresponding carbonyl compounds in refluxing acetonitrile in the presence of catalytic amounts of aluminum chloride.
Wet Alumina Supported Chromium(VI) Oxide: A Mild, Efficient and Inexpensive Reagent for Oxidative Deprotection of Trimethylsilyl and Tetrahydropyranyl Ethers in a Solventless System
作者:Majiid M. Heravi、Dariush Ajami、Mitra Ghassemzadeh
DOI:10.1055/s-1999-3425
日期:1999.3
Primary and secondary trimethylsilyl and tetrahydropyranyl (THP) ethers are converted to their carbonyl compounds efficiently using wet alumina supported chromium(VI) oxide under solvent free condition.
A convenient oxidative deprotection of tetrahydropyranyl ethers with iron(III) nitrate and clay under microwave irradiation in solvent free conditions
作者:Majid M. Heravi、Dariush Ajami、Mohammad M. Mojtahedi、Mitra Ghassemzadeh
DOI:10.1016/s0040-4039(98)02355-7
日期:1999.1
The efficient and environmentally benign oxidative deprotection of tetrahydropyranyl ethers using montmorillonite supported iron(III) nitrate under microwave irradiation under solvent free conditions is described.
Solvent free Tetrahydropyranylation of Alcohols and Phenols over Sulfuric Acid Adsorbed on Silica Gel
作者:Majid M. Heravi、Dariush Ajami And、Mitra Ghassemzadeh
DOI:10.1080/00397919908086065
日期:1999.3
Abstract Alcohols and phenols are tetrahydropyranylated in the presence of sulfuric acid adsorbed on silicagel in high to excellent yields in solvent free conditions and is expedited by microwave irradiation. Addition of methanol performs the complete deprotection.