Enantioselective Norrish–Yang Cyclizatio
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Thorsten Bach; Tobias Aechtner; Bernhard Neumüller
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Article
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2002
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John Wiley and Sons
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English
⚖ 259 KB
The four N-(omega-oxo-omega-phenyl-alkyl)-substituted imidazolidinones 5-8 were prepared from N-acetylimidazolidinone (4). Upon irradiation, these substrates underwent Norrish-Yang cyclization to the racemic products rac-9-rac-12 (51-75%). The reactions of the N-2-oxoethylimidazolidinones 5 and 6 we