Reactivity of Substituted Thiophenes toward Tris(triethylphosphine)platinum(0), -palladium(0), and -nickel(0)
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- 作者：Maira Herná ; ndez ; Georgina Miralrio ; Alma Aré ; valo ; Sylvain Bernè ; s ; Juventino J. Garcí ; a ; Carolina Ló ; pez ; Peter M. Maitlis ; and Federico del Rio
- 刊名：Organometallics
- 出版年：2001
- 出版时间：September 17, 2001
- 年：2001
- 卷：20
- 期：19
- 页码：4061 - 4071
- 全文大小：155K
- 年卷期：v.20,no.19(September 17, 2001)
- ISSN：1520-6041
文摘
The reactions of [M(PEt3)3] (M = Pt (1), Pd (2), Ni (3)) with 3-chlorothiophene, 2-chlorothiophene, 3-nitrothiophene, 2-nitrothiophene, 2-methoxythiophene, 3-methoxythiophene,2-acetylthiophene, and 3-acetylthiophene afforded thiaplatinacycles of the type [(Et3P)2M(C,S-C4H3RS)], (for M = Pt, R = Cl (4 and 5), NO2 (6 and 7), MeO (8 and 9), Ac (10 and 11);for M = Pd, R = Cl (12 and 13), NO2 (14), MeO (15 and 16), Ac (17 and 18), for M = Ni, R= Cl (19)). When 3 and 2-chlorothiophene were reacted, another compound resulting fromthe oxidative addition of the C-Cl bond could be isolated, with the formulation [(Et3P)2Ni(Cl)(
1-T)] (20). Additionally the reaction of 3 with 2-nitrothiophene produced a compoundderived from a C-H activation reaction, [(Et3P)2Ni(H)(1-NO2T)] (21). The thiaplatinacycles8-11 were shown to be active intermediates in HDS reactions, under catalytic conditions,to give 81 cycles at 300 psi, 100 
C in THF, in the presence of metallic mercury. Crystalstructures are reported for 4 and 7.
1-T)] (20). Additionally the reaction of 3 with 2-nitrothiophene produced a compoundderived from a C-H activation reaction, [(Et3P)2Ni(H)(1-NO2T)] (21). The thiaplatinacycles8-11 were shown to be active intermediates in HDS reactions, under catalytic conditions,to give 81 cycles at 300 psi, 100 C in THF, in the presence of metallic mercury. Crystalstructures are reported for 4 and 7.