Synthesis of Lactones via the Oxidation of α,ω-Diols with Sodium Bromite and Alumina under Water-Free Conditions.-An alternative high-yielding synthesis of lactones via dehydrogenation of α,ω-diols with the NaBrO 2 /acidic alumina system under dry and heterogeneous conditions is developed.-(HIRANO, M.; YAKABE, S.; MORIMOTO, T.; Synth.
Regiospecific Aromatic Chlorination of Alkyl Phenyl Ethers Using Sodium Chlorite Catalyzed by Manganese(III) Acetylacetonate and Moist Alumina in Dichloromethane.-The solid-solution biphasic system of NaClO 2 /moist alumina/Mn(acac) 3 serves as a mild and efficient electrophilic chlorine source for alkyl phenyl ethers, providing an operationally simple, fast and practical procedure for regioselective and high-yielding aromatic chlorination. -(HIRANO, M.; YAKABE, S.; MONOBE, H.; CLARK, J. H.; MORIMOTO, T.; J. Chem. Soc.
The title reaction of various ethers like (I) affords the chlorinated products (II) with high para-selectivity under mild and anhydrous conditions. -(HIRANO, M.; YAKABE, S.; MONOBE, H.; CLARK, J. H.; MORIMOTO, T.; Synth.
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