The ring-contraction reaction of electron-deficient 3-silyl-chromenes to 2-benzylbenzofurans was developed. CsF efficiently promoted the reaction at room temperature to afford a variety of 2-benzylbenzofurans in good yields. The reaction is proposed to proceed through an allenyl intermediate.
|Number of pages||4|
|Publication status||Published - 2018|
- Allenyl intermediate
- Ring-contraction reaction
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