method,[8] affords 1 as an orange wax (47% yield, not optimized). Extensive molecular analysis is in full agreement with the structure shown (see the Supporting Information). Compound 1 does not aggregate in chloroform, as concluded from the concentration independence of the absorption and fluorescence spectra (data not shown). However, in more polar solvents, such as ethanol and water, the UV spectra are shifted and their ...
