Regioselectivity Control in the Metal-Ca
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Benito Alcaide; Pedro Almendros; Teresa Martínez del Campo; Elena Soriano; José
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Article
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2009
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John Wiley and Sons
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English
⚖ 312 KB
## Abstract Guiding cyclization: The 5‐__exo‐trig__ cyclization pathway of γ‐allenols can be completely reversed either by changing the metal (Pd instead of Au) or by using a methoxymethyl protecting group, with 7‐__endo‐trig__ alkoxycyclization then dominating instead (see scheme). In addition, th