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We have developed an improved method for the synthesis of dihydroxyterphenylphosphines (DHTPs), which are important ligands used in the palladium-catalyzed ortho-selective cross-coupling of dihalophenols or dihaloanilines. This method is simple, easily scalable, and has been used to produce multigram quantities of Cy-DHTP·HBF 4 and Ph-DHTP in five steps.
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