Mini‐Violerythrins: Why can C₃₈‐Carotinoids be Blue?

Abstract

linear reactivity-selectivity relationship. Since the selectivity scale has to be spread out for the graphical display in Figure 2, minor deviations from the linear reactivity-reactivity relationships lead to noticeable deviations from the ideal linear reactivity-selectivity relationship.

New Colours for Carotenoids – Synthesis of Pyran Polyenes

“…[1, [24][25][26] Some may object that carotenoids with norbornadiene and polyketone rings are no longer omniconjugated [27] and therefore should not be compared with those compounds with full conjugation between all connected moieties. However, most chemists will classify the compounds shown in part a of Scheme 1 as carotenoids doped with permissible auxochromes.…”