Easy entry to terminal 1,5-and 1,6-enynes from (indenyl)ruthenium(II) allenylidenes and Grignard reagents

被引：34

作者：

Cadierno, V ^{[1
]}

Conejero, S ^{[1
]}

Gamasa, MP ^{[1
]}

Gimeno, J ^{[1
]}

机构：

[1] Univ Oviedo, Fac Quim,Unidad Asociada CSIC, Dept Quim Organ & Inorgan, Inst Univ Quim Organomet Enrique Moles, E-33071 Oviedo, Spain

来源：

ORGANOMETALLICS | 2002年 / 21卷 / 18期

关键词：

D O I：

10.1021/om020330n

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The allenylidene complexes [Ru(=C=C=(CRR2)-R-1)(eta(5)-C9H7)(PPh3)(2)][PF6] (R-1 = R-2 = Ph (1a); R-1 = H, R-2 = Ph (1b), C(Me) = CPh2 (1c); (CRR2)-R-1 = (1R)-1,3,3-trimethylbicyclo[2.2.1]hept-2-ylidene (1d)) react with Grignard reagents CH2=CH(CH2)(n)MgBr (n = 1, 2) to yield the sigma-alkynyl derivatives [Ru{CdropCCR(1)R(2)(CH2)(n)-CH=CH2}(eta(5)-C9H7)(PPh3)(2)] (2a-d, 3a-c). Protonation of 2a-d and 3a-c with HBF4.Et2O leads to the vinylidene complexes [Ru{=C=C(H)(CRR2)-R-1(CH2)(n)CH=CH2}(eta(5)-C9H7)(PPh3)(2)][BF4] (4a-d and 5a-c), which can be easily demetalated with acetonitrile to afford the terminal enynes HCdropCCR(1)R(2)(CH2)(n)CH=CH2 (6a-d and 7a-c) and the nitrile complex [Ru(N= CMe)(eta(5)-C9H7)(PPh3)(2)][BF4] (8).

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页码：3837 / 3840

页数：4

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