V. Rani, Harkesh B. Singh, R. Butcher
Dec 1, 2017
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0
Influential Citations
14
Citations
Journal
Organometallics
Abstract
The NCN palladium(II) pincer complex [Benzoyl(N∧C∧N)PdBr] (16) was synthesized by the oxidative addition of Benzoyl(N∧C∧N)Br to Pd(dba)2 in 85% yield [(N∧C∧N) = 5-tert-butyl-1,3-bis(N-substituted benzimidazol-2′-yl)phenyl)]. Then treatment of complex 16 with KI yielded the iodopalladium complex [Benzoyl(N∧C∧N)PdI] (17) in 92% yield. Furthermore, a series of cationic palladium(II) complexes, including [Benzoyl(N∧C∧N)Pd(MeCN)]+[BF4]− (18), [Benzoyl(N∧C∧N)Pd(MeCN)]+[SbF6]− (19), and [Benzoyl(N∧C∧N)Pd(OTf)] (20), were prepared in 68–79% yields by the reaction of the neutral palladium(II) complex (16) with AgBF4, AgSbF6, and AgOTf, respectively. Similarly, previously synthesized Tosyl(N∧C∧N)PdBr [5-tert-butyl-1,3-bis(N-tosylbenzimidazol-2′-yl)phenyl]palladium bromide (5b) was treated with AgSO3CF3 and AgSbF6 to afford cationic palladium(II) complexes [Tosyl(N∧C∧N)Pd(OTf)] (21) and [Tosyl(N∧C∧N)Pd(MeCN)]+[SbF6]− (22) in 41 and 61% yields, respectively. 5-tert-Butyl-1,3-bis[{(N-tosylbenzimidazol-2′-yl)phenyl}pal...