2-chloro-azaborolyl anion: a source of 1,2-azaborole isosteric to cyclopentadienylidene.
2-chloro-azaborolyl anion: a source of 1,2-azaborole isosteric to cyclopentadienylidene.
复制标题
2-氯-氮杂硼杂硼基阴离子：与亚环戊二烯等排的1,2-氮杂硼杂环戊烯的来源。
作者：
Liang Xie;Jianying Zhang;C. Cui
氮杂硼杂环阴离子是一类五元BN杂环化合物，由于其芳香性和与配体的等电子关系，引起了人们的广泛关注。除了它们的合成和在制备金属配合物中的应用外，它们的化学的其他方面几乎没有探索。氮杂丁二烯基螯合物二氯化硼[ArN <$C（R）CH <$C（R）] BCl 2（2，Ar= 2，6-Me 2 C6 H3，R=tBu）与2当量的钾还原，得到新的2-氯-氮杂硼杂环戊烯基阴离子[ArNC（R）CHC（R）BCl]K（thf）（3）。3与1，3，4，5-四甲基咪唑-2-亚基（NHC）反应，生成了第一个NHC-氮杂硼杂环戊烯加合物，其中KCl被消除。在与H2O和有机叠氮化物ArN 3的反应中也观察到了盐消除反应，导致形成氧代桥连的3 H-1，2-二氮杂硼杂环戊烯和分子内供体稳定的亚氨基硼烷，表明3是未探索的1，2-氮杂硼杂环戊烯电子等排到环戊二烯亚基的来源。
Azaborolyl anions, the five-membered BN heterocycles, have attracted a considerable attention due to their aromaticity and isoelectronic relationship with ubiquitous cyclopentadienyl ligands. Besides their syntheses and applications in the preparation of metal complexes, the other aspects of their chemistry have been virtually unexplored. Reduction of the azabutadienyl chelate boron dichloride [ArNC(R)CHC(R)]BCl2 (2, Ar=2,6-Me2 C6 H3 , R=tBu) with two equivalents of potassium yielded the novel 2-chloro-azaborolyl anion [ArNC(R)CHC(R)BCl]K(thf) (3) as a stable product in good yield. Reaction of 3 with 1,3,4,5-tetramethylimidazol-2-ylidene (NHC) yielded the first NHC-azaborole adduct with the elimination of KCl. The salt elimination reaction was also observed in the reactions with H2 O and the organic azide ArN3 , leading to the formation of an oxo-bridged 3H-1,2-diazaborole and an intramolecular donor-stabilized iminoborane, demonstrating that 3 is a source of the unexplored 1,2-azaborole isosteric to cyclopentadienylidene.
影响因子：
16.6
作者：
Campbell, Patrick G.;Marwitz, Adam J. V.;Liu, Shih-Yuan
通讯作者：
Liu, Shih-Yuan