Silica-ZnCl2: An Efficient Catalyst for the Synthesis of 4-Methylcoumarins
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چکیده
منابع مشابه
Silica-ZnCl2: An Efficient Catalyst for the Synthesis of 4-Methylcoumarins
Silica-ZnCl2 has been found to be an efficient and eco-friendly catalyst for the synthesis of substituted 4-methylcoumarins from ethyl acetoacetate and substituted phenols under "neat" conditions in an oil bath at 80°C. The experimental procedure is simple, includes shorter reaction times (15-65 min), compatible with sensitive functional groups, and results in excellent yield of the products.
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Two simple protocols for the synthesis of 1, 2, 4, 5- tetrasubstitutedimidazoles using nano-SPA as a reusable, eco- friendly, inexpensive, and efficient catalyst are reported. Short reaction times, high yields, scale-up and easy workup are the advantages of these protocols.
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ژورنال
عنوان ژورنال: ISRN Organic Chemistry
سال: 2013
ISSN: 2090-5157
DOI: 10.1155/2013/132794