Synthesis and reactivity of cationic (.eta.3-butadienyl)platinum complexes
Synthesis and reactivity of cationic (.eta.3-butadienyl)platinum complexes
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阳离子(η3-丁二烯基)铂配合物的合成和反应性
DOI：
10.1021/om00047a029
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发表时间：
1991
期刊：
影响因子：
2.8
通讯作者：
A. W. Parkins
中科院分区：
文献类型：
--
作者：
S. A. Benyunes;L. Brandt;Michael J. Green;A. W. Parkins
(2-η-1-丁二烯基)铂(II)配合物可与氯丁二烯或4-氯-3-甲基-1，2-丁二烯反应得到。用AgPF 6处理这些络合物可以直接得到阳离子η3丁二烯络合物[Pt{η3−CH2：C(R)：C：CH2}(PPh3)2][PF 6][R=H，Me]，这些络合物意外地被烯丙基部分中心碳原子上的软碳亲核试剂K-[CH(CO2 Me)2]攻击而形成亚甲基铂环丁烷。这些不寻常的分子在热分解时会生成铂(O)亚甲基环丙烷络合物
(2-η 1 -Butadienyl) platinum (II) complexes can be obtained by reaction of [Pt(C 2 H 4 )(PPh 3 ) 2 ] with either chloroprene or 4-chloro-3-methylbuta-1,2-diene. Treatment of these complexes with AgPF 6 provides direct access to the cationic η 3 -butadienyl complexes [Pt{η 3 −CH 2 :C(R):C:CH 2 }(PPh 3 ) 2 ][PF 6 ] [R = H, Me), which surprisingly are attacked by the soft carbon nucleophile K- [CH(CO 2 Me) 2 ] at the central carbon atom of the allylic moiety to form methyleneplatinacyclobutanes. These are unusual molecules that on thermolysis afford Pt(O) methylenecyclopropanes complexes