20-( N -Methylpyridiniumyl)ethynylated chlorophyll- a derivative with an intense Qx absorption band at a green to orange region
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DOI: 10.1016/j.tetlet.2018.01.052
Abstract: Abstract Methyl 20-substituted mesopyropheophorbides-a were prepared by the chemical modification of natural chlorophyll-a via palladium-catalyzed cross-coupling reactions. The 20-ethynylation and further 2-pyridylation showed bathochromic shifts in their visible absorption bands as well as hyperchromic effects… read more here.
Keywords: absorption; methylpyridiniumyl ethynylated; intense absorption; ethynylated chlorophyll ... See more keywords