2-Nitroaryldifurylmethanes 1a and 1b. readily available by condensation of 2-nitrobenzaldehyde and 6-nitroveratraldehyde with 2-methylfuran. were transformed into indole. cinnoline and benzothiazine-3. https://www.silkmarketbeijing.com/product-category/cases-pipe-pouches-5/