JOURNAL of the Tunisian Chemical Society

We describe in this work a synthetic methodology of the preparation of the ethyl-2-(2,4-dioxochroman-3-ylidenemethyl)amino-3-dimethylaminopropanoate (4) and its further use as a key intermediate to prepare some N-subsituted 3-(aminomethylene)-4-oxocoumarines. All prepared compounds have been fully characterized by mass spectrometry, ¹H, ¹³C and 2D NMR techniques (HMQC HMBC and NOESY).

B. Trimèche, R. Gharbi, A. Romdhane, S. Hammami, S. Attia, Z. Mighri

Pages 91-99