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The oxidation of p-methoxy benzyl (PMB) ethers was achieved using nitroxyl radical catalyst 1, which contains electron-withdrawing ester groups adjacent to the nitroxyl group. The oxidative deprotection of the PMB… Click to show full abstract
The oxidation of p-methoxy benzyl (PMB) ethers was achieved using nitroxyl radical catalyst 1, which contains electron-withdrawing ester groups adjacent to the nitroxyl group. The oxidative deprotection of the PMB moieties on the hydroxy groups was observed upon treatment of 1 with 1 equiv of the co-oxidant phenyl iodonium bis(trifluoroacetate) (PIFA). The corresponding carbonyl compounds were obtained by treating the PMB-protected alcohols with 1 and an excess of PIFA.
Keywords:
nitroxyl radical;
oxidation methoxybenzyl;
radical catalyst;
chemoselective oxidation
Journal Title: Organic letters
Year Published: 2020
Link to full text (if available)
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Journal Title: Organic letters
Year Published: 2020
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!