In the presence of NiCl2(PPh3)2 as catalyst, p-methoxycarbonylphenyl mesylate (5) and tosylate (6) react with lithium arylborates 4 (Ar = 2-furyl, Ph, p-Me-Ph, p-MeO-Ph) at room temperature to afford the coupling products in high yields. Similarly, mesylates 9-11 coupled with these borates 4 efficiently.
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Kobayashi, Y., & Mizojiri, R. (1996). Nickel-catalyzed coupling reaction of lithium organoborates and aryl mesylates possessing an electron withdrawing group. Tetrahedron Letters, 37(47), 8531–8534. https://doi.org/10.1016/0040-4039(96)01984-3