Air-Stable Nickel Precatalysts for Fast and Quantitative Cross-Coupling of Aryl Sulfamates with Aryl Neopentylglycolboronates at Room Temperature

A library containing 10 air-stable Ni^IIX­(Aryl)­(PCy₃)₂ σ-complexes as precatalysts (X = Cl, Br, OTs, OMs, aryl = 1-naphthyl, 2-naphthyl; X = Cl, 1-acenaphthenyl, 1-(2-methoxynaphthyl), 9-phenanthrenyl, 9-anthracyl) was synthesized and demonstrated to quantitatively cross-couple 2-methoxyphenyl dimethylsulfamate with methyl 4-(5,5-dimethyl-1,3,2-dioxaborinane-2-yl)­benzoate at 23 °C in dry THF in the presence of K₃PO₄(H₂O)_3.2 in less than 60 min. Lower or higher amounts of H₂O in K₃PO₄ and as received THF mediate the same transformation in a maximum three times longer reaction time