Sulfamic acid catalyses the one-pot three components coupling of aldehydes, anilines and electron rich dienophiles such as dihydropyran, dihydrofuran and ethyl vinylether resulting in the formation of pyrano, furano and ethoxy benzopyrans.
Organic Chemistry Division Central Leather Research Institute, Adyar, Chennai - 600 020, India.
Publication date: August 1, 2005
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