[reaction: see text] Allylzirconium reagents are effective for radicalallylation of alpha-halo carbonyl compounds. The key steps would be homolytic cleavage of the zirconium-carbon bond and halogen abstraction by the resulting Cp(2)ZrCl(III). Zirconocene-olefin complex can be also utilized for the allylation of alpha-halo compounds.
IBX/I2-mediated oxidation of alkenes and alkynes in water: a facile synthesis of α-iodoketones
作者:Jhillu S. Yadav、Basi V. Subba Reddy、Ashutosh P. Singh、Ashok K. Basak
DOI:10.1016/j.tetlet.2008.07.120
日期:2008.10
The conversion of alkenes into alpha-iodoketones has been achieved in good yields and with high regioseiectivity by means of iodohydrin formation and subsequent oxidation with 2-iodoxybenzoic acid (IBX) under mild conditions. Aromatic alkynes are also converted into their corresponding alpha-iodoketones Under similar conditions. (C) 2008 Elsevier Ltd. All rights reserved.
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