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ChemInform Abstract: A Simple Method for the Selective Deprotection of p-Methoxybenzyl Ethers by Cerium(III) Chloride Heptahydrate and Sodium Iodide.

✍ Scribed by Anna Cappa; Enrico Marcantoni; Elisabetta Torregiani; Giuseppe Bartoli; Maria Cristina Bellucci; Marcella Bosco; Letizia Sambri

Publisher: John Wiley and Sons
Year: 2010
Weight: 36 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199951065

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✦ Synopsis

A Simple Method for the Selective Deprotection of p-Methoxybenzyl Ethers by Cerium(III) Chloride Heptahydrate and Sodium Iodide. -Highly selective deprotection of a variety of p-methoxybenzyl ethers is achieved under mild conditions with CeCl 3 •7H 2 O as promoter and NaI as trapping agent in good to excellent yields. The reaction becomes possible even in the presence of sensitive functional groups such as -O-Bn, -CO-O-Et, and double bonds. Deprotection of other methoxybenzyl ethers, e.g. (XI), is also possible and proceeds in the case of (XIb) more rapidly. -(CAPPA,

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