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Potassium dodecatugstocobaltate trihydrate (K5CoW12O40·3H2O): A mild and efficient reusable catalyst for the one-pot synthesis of 1,2,4,5-tetrasubstituted imidazoles under conventional heating and microwave irradiation

✍ Scribed by Lingaiah Nagarapu; Satyender Apuri; Srinivas Kantevari

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
126 KB
Volume
266
Category
Article
ISSN
1381-1169

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Potassium dodecatangestocobaltate trihyd
Potassium dodecatangestocobaltate trihydrate (K5CoW12O40·3H2O): a mild and efficient catalyst for deprotection of dioxolanes and trimethylsilyl ethers
✍ Mohammad H Habibi; Shahram Tangestaninejad; Iraj Mohammadpoor-Baltork; Valiollah 📂 Article 📅 2001 🏛 Elsevier Science 🌐 French ⚖ 107 KB

Mild and easy deprotection of benzylic dioxolanes to carbonyl compounds (in refluxing dry acetone) and trimethylsilyl ethers to alcohols in acetonitrile at ambient temperature has been carried out in excellent yields under K 5 CoW 12 O 40 •3H 2 O (0.01 molar equiv.

Potassium dodecatangestocobaltate trihyd
Potassium dodecatangestocobaltate trihydrate (K5CoW12O40·3H2O): a mild and efficient catalyst for the tetrahydropyranylation of alcohols and their detetrahydropyranylation
✍ Mohammad H Habibi; Shahram Tangestaninejad; Iraj Mohammadpoor-Baltork; Valiollah 📂 Article 📅 2001 🏛 Elsevier Science 🌐 French ⚖ 59 KB

A simple, mild and effective method for tetrahydropyranylation of a variety of alcohols and cleavage of their tetrahydropyranyl ethers at ambient temperature in the presence of K 5 CoW 12 O 40 •3H 2 O as the catalyst with high turnovers is described.