Copper and l-sodium ascorbate catalyzed hydroxylation and aryloxylation of aryl halides

CuSO4·5H2O and NaAsc catalyzed hydroxylation and C–O/C–S cross-coupling reactions of aryl halides with phenols or 4-methylbenzenethiol were described. A wide range of substrates and test cases highlight the synthetic utility of the approach. A series of phenols, diaryl ethers, alkylaryl ethers, and diaryl thioethers were synthesized in high yield.

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