58592-97-5Relevant academic research and scientific papers
Transition metal alkynyl complexes by transmetallation from Au(CΞCAr)(PPh3) (Ar = C6H5 or C 6H4Me-4)
Khairul, Wan M.,Fox, Mark A.,Zaitseva, Natasha N.,Gaudio, Maryka,Yufit, Dmitry S.,Skelton, Brian W.,White, Allan H.,Howard, Judith A. K.,Bruce, Michael I.,Low, Paul J.
, p. 610 - 620 (2009/05/06)
Facile acetylide transfer reactions take place between gold(i) complexes Au(CΞCAr)(PPh3) (Ar = C6H5 or C 6H4Me-4) and a variety of representative inorganic and organometallic complexes MXLn
Chiral cis-platinum acetylide complexes via diphosphine ligand exchange: Effect of the ligand
Sadowy, Amber L.,Ferguson, Michael J.,McDonald, Robert,Tykwinski, Rik R.
, p. 6321 - 6325 (2009/04/13)
Chiral, bidentate phosphine ligands (R,R-CHIRAPHOS, R-PROPHOS, S,S-BDPP, R,R-Me-DUPHOS, R,R-NORPHOS) react with trans-platinum acetylide complexes 1a and 1b, (Ph3P)2Pt(C≡CR)2 (R = TTPS, p-MeC6H4), via ligand exchange to generate chiral platinum acetylide complexes. The corresponding cis-platinum complexes are formed in all cases except for the reaction of 1b with S,S-BDPP, where the dimeric complex 4d′ is the product. Conversely, the reaction of la and 1b with the ligands S,S-DIOP, R-BINAP, and R-SYNPHOS fails to give the desired product in appreciable yield. Circular dichroism spectroscopy is used to examine the effect of the chiral ligand on the chiroptical properties of the platinum acetylide framework. X-ray crystallographic analyses of achiral complex la and chiral derivative 4e are reported.
Activation of C-CN bond of propionitrile: An alternative route to the syntheses of 5-substituted-1H-tetrazoles and dicyano-platinum(II) species
Mukhopadhyay, Suman,Lasri, Jamal,Guedes da Silva, M. Fátima C.,Januário Charmier, M. Adília,Pombeiro, Armando J.L.
, p. 2883 - 2888 (2009/02/06)
Reaction of trans-[Pt(N4CR)2(PPh3)2] 1 (R = Me 1a, Et 1b, Ph 1c, CH2CH2Ph 1d) with propionitrile under reflux gives trans-[Pt(CN)2(PPh3)2] 2 along with 5-substitued-1H-tetrazoles N4CR 3 (R = Me 3a, Et 3b, Ph 3c, CH2CH2Ph 3d) in moderated to good yield, respectively. Treatment of cis-[Pt(N3)2(PPh3)2] 5 with alkynes HC{triple bond, long}CR′ 6 (R′ = Ph 6a, p-MeC6H4 6b) under focused microwave irradiation leads, upon azide replacement, to the formation of the dialkynyl complexes trans-[Pt(C{triple bond, long}CR′)2(PPh3)2] 7 (R′ = Ph 7a, p-MeC6H4 7b) which also furnish the dicyano-platinum complex 2 in refluxing propionitrile. In both cases, the reactions leading to the formation of 2 proceed via an unusual oxidative addition, involving NC-C bond cleavage of two propionitrile molecules, and a reductive elimination process.
