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- W2117651106 abstract "Abstract By application of substoichiometric amounts (50 mol %) of a chiral Lewis acid, the intramolecular [2+2] photocycloaddition of the title compounds was achieved with high enantioselectivity (up to 94 % ee ). Upon cleavage of the cyclobutane ring the resulting tricyclic products underwent ring‐expansion reactions under acidic conditions and formed anellated seven‐ or eight‐membered‐ring systems without racemization. The ring expansion could be combined with a diastereoselective reduction (triethylsilane) or allylation (allyltrimethylsilane) upon BF 3 catalysis (48–87 % yield)." @default.
- W2117651106 created "2016-06-24" @default.
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- W2117651106 date "2014-09-22" @default.
- W2117651106 modified "2023-10-18" @default.
- W2117651106 title "[2+2] Photocycloaddition of 3-Alkenyloxy-2-cycloalkenones: Enantioselective Lewis Acid Catalysis and Ring Expansion" @default.
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- W2117651106 doi "https://doi.org/10.1002/anie.201407832" @default.
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