Reactivity of Scandium Terminal Imido Complex toward Boranes: C(sp3)-H Bond Borylation and B-O Bond Cleavage

被引:16
|
作者
Chu, Jiaxiang [1 ]
Wang, Chen [1 ]
Xiang, Li [1 ]
Leng, Xuebing [1 ]
Chen, Yaofeng [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
基金
中国国家自然科学基金;
关键词
C-H ACTIVATION; STRUCTURAL-CHARACTERIZATION; CRYSTAL-STRUCTURE; LANTHANIDE; TRANSFORMATIONS; LIGAND; IMINOBORANES; BOROHYDRIDE; METATHESIS; HYDRIDE;
D O I
10.1021/acs.organomet.7b00452
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Scandium terminal imido complex [(NNNN)Sc=NDIPP] (2; NNNN = [MeC(N(DIPP))CHC(Me)-(NCH2CH2NMeCH2CH2NMe2)](-), DIPP = 2,6-(Pr2C6H3)-Pr-i) reacts with 9-borabicyclononane (9-BBN) to give scandium borohydride [(NNNN(B)-H)Sc(N(H)DIPP)] (3; NNNN(B)-H = [MeC(N(DIPP))CHC(Me)-(NCH2CH2NMeCH2CH2N(Me)CH2(BBN)](2-)), and C(sp(3))-H bond borylation of the NNNN ligand occurs during this reaction. In contrast, the reaction between complex 2 and catecholborane (CatBH) gives scandium catecholate [(NNNN)Sc(Cat)] (4), and B-O bond cleavage happens during this reaction. Both 3 and 4 have been well-characterized including the single-crystal X-ray diffraction analysis. Reaction of 2 with bis(catecholato)diboron (CatB-BCat) also gives a B-O bond cleavage product.
引用
收藏
页码:4620 / 4625
页数:6
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