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A variety of fluorinated phenols, biaryls, 6 H ‐benzo[ c ]chromen‐6‐ones and fluorenones were prepared based on regioselective [3+3] cyclizations of 1,3‐bis(silyl enol ethers) with 2‐fluoro‐3‐silyloxy‐2‐en‐1‐ones. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
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Hussain et al. (2007) studied this question.
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