Natural Kaolin supported sulfuric acid as an efficient catalyst for the preparation of 1, 1-diacetates under solvent-free conditions
الموضوعات : Iranian Journal of Catalysis
Zinat Gordi
1
,
Hossein Eshghi
2
1 - Department of Chemistry, Payame Noor University, Torbat-e-Heydarieh, Iran.
2 - Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, Mashhad, 91775-1436, Iran.
الکلمات المفتاحية: Protection, Aldehydes, Solvent-free, 1, 1-Diacetates, Kaolin,
ملخص المقالة :
A facile and efficient method for the preparation of 1,1-diacetates of aldehydes is improved. The acidified kaolin with sulfuric acid (2 % w/w) catalyzed 1,1-diacetates formation from aldehydes in solvent-free conditions. Both aromatic and aliphatic aldehydes gave high yields (85-95 %) of the corresponding 1, 1-diacetates. Advantages of this method are the use of inexpensive and selective catalyst, with high yields in simple operation, and short reaction time under solvent-free conditions.
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