Add time:08/24/2019 Source:sciencedirect.com
A convenient metal-free one-pot synthesis of benzofuran derivatives starting from simple ynones has been developed. Various functionalized benzofurans closely related to bioactive molecules can be obtained in moderate to good yields (up to 90%) through aza-Michael/Michael/annulation sequence. Preparative scale synthesis of benzofurans has also been successfully achieved. The application of the benzofuran products has been shown by easy transformations to highly functionalized molecules holding significant promise for medicinal chemistry and organic material chemistry.
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