Abstract An air-stable tetraphosphine N, N, N′, N′-tetra (diphenylphosphinomethyl)- benzene-1, 3-diamine (L3) was easily prepared in two steps from triphenylphosphine, which in combination with [Pd (η 3-C 3 H 5) Cl] 2 affords an efficient catalyst for Suzuki–Miyaura coupling of activated chloroarenes. Even at high temperature of 130á░ C, this catalyst exhibits good stability and longevity, and could allow a high turnover number of 680,000 ...
