Line Plot from Scientific Research

Back-irradiation into 15 using a 455-nm LED (grey, spectra recorded every 60 s, 11 min total). Insets: HPLC chromatograms at the start and end of the irradiation detected at 350-nm UV–vis absorption. The switching of 15 into 18 works up to a ratio of 16:84 at PSS 305 nm . Quantitative back-irradiation of 18 is possible at λ = 455 nm. Note that the depiction of 18 is just one of the two possible enantiomers formed in the rearrangement.

DOI