The Synthesis of Pyranoxanthenones containing a Dimethylchromen System
Journal of the Chemical Society C: Organic Pub Date : , DOI:10.1039/J39700001662
Abstract
3-Methylcrotonaldehyde, on condensation with 1,3,5- and 1,3,7-trihydroxyxanthones, gives an angular and a linear pyranoxanthenone derivative in each case.
