Syntheses of Re(V) Alkylidyne Complexes and Ligand Effect on the Reactivity of Re(V) Alkylidyne Complexes toward Alkynes

被引:18
作者
Bai, Wei [1 ]
Wei, Wei [1 ]
Sung, Herman H. Y. [1 ]
Williams, Ian D. [1 ]
Lin, Zhenyang [1 ]
Jia, Guochen [1 ]
机构
[1] Hong Kong Univ Sci & Technol, Dept Chem, Clear Water Bay, Kowloon, Hong Kong, Peoples R China
关键词
METAL-CARBON BONDS; RING-CLOSING ALKYNE; MAIN-GROUP ELEMENTS; OLEFIN METATHESIS CATALYSTS; EFFECTIVE CORE POTENTIALS; CARBYNE COMPLEXES; CROSS-METATHESIS; 2,4,6-TRIMETHYLBENZYLIDYNE COMPLEXES; BENZYLIDYNE COMPLEXES; TERMINAL ALKYNES;
D O I
10.1021/acs.organomet.7b00877
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A series of new d(2) Re (V) alkylidyne complexes were synthesized, including Re(equivalent to CCH2Ph)Cl-2(PR3)(3) (PR3 = PMe3, and PMePh2), Re(equivalent to CCH2Ph)I-2(PMePh2)(3), Re(equivalent to CPh)(S2CNEt2)(2)(PMePh2), [CpRe(equivalent to CPh)(PMePh2)(2)]Cl, and Re(equivalent to CCH2Ph)(mnt)(PMePh2)(2). The complexes Re(equivalent to CCH2Ar)Cl-2(PR3)(3) (PR3 = PMe3, PMe2Ph, and PMePh2) as well as Re(equivalent to CCH2Ph)I-2(PMePh2)(3) were found to undergo alkyne metathesis reactions with PhC equivalent to CPh, while the other complexes are inactive. The activity of Re(CCH2Ar)Cl-2(PR3)(3) toward alkyne metathesis reactions with PhC equivalent to CPh is in the order of PMe3 < PMe2Ph < PMePh2. The complex Re(equivalent to CCH2Ph)I-2(PMePh2)(3) is slightly less reactive than its chloride analog. The difference in the reactivity of the alkylidyne complexes has been studied computationally.
引用
收藏
页码:559 / 569
页数:11
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