Electron transfer photoinduced cleavage of acetals. A mild preparation of alkyl radicals

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摘要: Electron transfer from 2-alkyl- and 2,2-dialkyldioxolanes as well open-chain ketals to singlet excited benzene-1,2,4,5-tetracarbonitrile (TCNB) is foolowed by fragmentation of the donors radical cation yield alkyl radicals dialkoxy carbocations. The first species are trapped TCNB alkylbenzentricarbnitriles (substitution a secon syano group can be obtained sequentially) in minor path reduced alkanes, while latter ones react with nucleophiles give ortho acide derivates

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Electron transfer photoinduced cleavage of acetals. A mild preparation of alkyl radicals

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Electron transfer photoinduced cleavage of acetals. A mild preparation of alkyl radicals

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