An organocatalytic rearrangement of 2-(N-alkyl-/aryl-)amino-4-oxo-4H-1-benzopyran-3-carbaldehyde

作者：Maiti Sourav; Panja Suman Kalyan; Bandyopadhyay Chandrakanta^*

来源：Tetrahedron Letters, 2011, 52(16): 1946-1948.

DOI：10.1016/j.tetlet.2011.02.053

• Rearrangement
• Organocatalysis
• Chromone-3-carbanilide
• 2-Aminochromone-3-carbaldehyde
• Chroman-2,4-dione
• 1-Benzopyran

2-(Arylamino)-4-oxo-4H-1-benzopyran-3-carbaldehyde rearranges to 4-oxo-4H-1-benzopyran-3-carbanilide when treated with glycine in the presence of formalin, but under similar conditions 2-(alkylamino)-4-oxo-4H-1-benzopyran-3-carbaldehyde rearranges to 3-alkylaminomethylenechroman-2,4-dione.

• 出版日期2011-4-20