Efficient Synthesis of 3-Sulfonyl-2-sulfonylmethyl-2<i>H</i>-chromenes via Tandem Knoevenagel Condensation/Oxa-Michael Addition Protocol

oleh: Lin Jiang, Peiying Peng, Min Li, Lu Li, Menglin Zhao, Minglong Yuan, Mingwei Yuan

Format: Article
Diterbitkan: MDPI AG 2022-04-01

Deskripsi

An organocatalytic [4 + 2] cascade annulation of salicylaldehydes and 1,3-bisarylsulfonylpropenes has been developed. This protocol enables the efficient and straightforward synthesis of a new series of 3-sulfonyl-2-sulfonylmethyl-2<i>H</i>-chromenes that are useful for exploring pharmacologically valued compounds. Further reductive modifications result in 3-desulfonylated chromene or chromane derivatives. This protocol can be expanded to the synthesis of 3-sulfonyl-2-sulfonylmethyl 1,2-dihydroquinoline.