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A convenient and high yielding total synthesis of phebalosin (1) has been achieved in four linear steps from commercially available umbelliferone. The first total synthesis of murraxocin (4), a natural product isolated from Murraya exotica has been described via phebalosin. Total syntheses of murrangatin (2) and murralongin (5) have also been demonstrated using the same strategy. The key step involves...
Using CuI/xantphos/Pd(OAc) 2 catalytic system, the intermolecular C–C cross coupling between benzoxazoles and ortho-haloanilides has been developed in moderate to good yields. The procedure tolerates a series of functional groups on benzoxazole, such as ester, chloro, methyl, and methoxy groups. This divergent approach provides access to various N-(2-Benzoxazol-2-ylphenyl)amides.
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