2,5-Dimethylphenacyl carbonates: A photoremovable protecting group for alcohols and phenols
摘要：
Synthesis and photochemistry of a photochemically removable protecting group for alcohols and phenols, based on the 2,5-dimethylphenacyl DMP chromophore, is described. DMP carbonates release the corresponding hydroxy group containing molecules in high isolated yields >70, with quantum yieldsΦ0.1–0.2 in methanol andΦ0.36–0.51 in cyclohexane. The reactions proceed predominantly by the triplet pathwayvia E-photoenols, the lifetimes of which of approximately 2 s or 3 ms in cyclohexane or methanol, respectively, were determined by laser flash photolysis.
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关键词：
microcavitation bubble selective photothermolysis interferometer retinal pigment epithelium selective retina treatment
DOI：
10.1039/b408851d
被引量：
年份：
2004
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