AI Article Synopsis
- Researchers synthesized a library of 10 stable Ni(II) σ-complexes as precatalysts for cross-coupling reactions.
- The complex effectively couples 2-methoxyphenyl dimethylsulfamate with a specific boronate ester in dry THF at room temperature, completing the reaction in under 60 minutes.
- Altering the water content in the potassium phosphite (K3PO4) and the THF solvent can increase the reaction time by up to three times.
Article Abstract
A library containing 10 air-stable Ni(II)X(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.
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