476213-03-3Relevant academic research and scientific papers
Synthesis of some 3,4-dihydro-2H-benzo[f]pyrano[2,3-h]chromen-6-one derivatives
Nicolaides, Demetrios N.,Gautam, Daman R.,Litinas, Konstantinos E.,Papamehael, Theodora
, p. 1455 - 1460 (2002)
Reactions of o-quinones 16-18 with ylide 19 afforded compounds 5-7 in moderate to good yields (62-80%), which were further de-ethoxycarbonylated to compounds 28-30 in 53-66% yield. Compounds 6, 7 and 29 were further transformed into compounds 31-35. The preparation of the novel compounds 10, 11, 16 and 27 is also reported.
