Does the Photoredox Reaction Effect the Photorelease of Anthraquinone Protected Benzaldehyde? A Time-Resolved Spectroscopic Study
2020
absorption, and nanosecond time-resolved resonance Raman spectroscopies as well as DFT calculations were performed to unravel the photorelease reaction mechanism of anthraquinon-2-ylethyl-1,2-diol protected carbonyl compound (Aqe-diol-PPG). It is unravelled that the triplet state of Aqe-diol-PPG underwent a PCET process to form a xylylene intermediate. After the C-O bond cleavage a diradical intermediate was generated, which further released the protected benzaldehyde with the by-product Aqe-diol. The comparison work suggested that Aqe-diol underwent a further photoredox reaction in aqueous solutions.
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