Ammonium chloride catalyzed microwave-assisted synthesis of tetrahydrobenzo[b]pyrans
الموضوعات : Iranian Journal of CatalysisVijay Pagore 1 , Sunil Tekale 2 , Vivekanand Jadhav 3 , Rajendra Pawar 4
1 - Department of Chemistry, Deogiri College, Station Road, Aurangabad (MS) India 431 005.
2 - Department of Chemistry, Shri Muktanand College, Gangapur (MS) India 431 109.
3 - Department of Chemistry, Shri Muktanand College, Gangapur (MS) India 431 109.
4 - Department of Chemistry, Deogiri College, Station Road, Aurangabad (MS) India 431 005.
الکلمات المفتاحية: MW irradiation, Tetrahydrobenzo[b]pyrans, Ammonium chloride,
ملخص المقالة :
In the present work, we have developed a mild, efficient, and environmentally benign method for the synthesis of tetrahydrobenzo[b]pyran derivatives via a three-component cyclocondensation of aldehydes, malononitrile and dimedone utilizing ammonium chloride as a simple, easily available and cost effective catalyst under microwave irradiation. This method has several attracting features such as simple experimental set up, easy work-up procedure, high conversions and short reaction times affording the products in moderate to excellent yield.
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