2002 protection, deprotection

protection, deprotectionO 0345

24 - 072Benzyltriphenylphosphonium Chlorate (BTPPC) as a New andMild Reagent for Oxidative Deprotection of Trimethylsilyl andTetrahydropyranyl Ethers of Benzylic Alcohols under Non-aqueousConditions. — Tms- and Thp-protected benzylic alcohols are transformedinto the corresponding aldehydes or ketones by application of stoichiometricamounts of the title reagent and catalytic amounts of AlCl3 in MeCN atreflux or at room temperature. In contrast, this method is not suitable forthe oxidative deprotection of aliphatic and allylic alcohols (IX)/(XI) since onlythe corresponding alcohols are obtained. — (HAJIPOUR, ABDOL REZA;MALLAKPOUR, SHADPOUR E.; MOHAMMADPOOR-BALTORK, IRAJ;MALAKOUTIKHAH, MORTEZA; Tetrahedron 58 (2002) 1, 143-146; Pharm.Res. Lab., Coll. Chem., Isfahan Univ. Technol., Isfahan 84156, Iran; EN)

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