具有取代模式的许多叠氮基硼烷衍生自邻苯二酚(3),频哪醇(4a),1,2-二氨基乙烷(4b,c),1,2-乙二硫醇(4d)和1,2,4,5-合成了四羟基苯以及无环二烷氧基物质(5),并且在4c(N,N'-二甲苯基-2-叠氮基1,3,2-二氮杂硼烷)的情况下,也进行了结构表征。叠氮基硼烷在环己烷溶剂中进行光解,以研究生成的硼基氮烯经历分子间CH插入反应的趋势。分子间插入产物的产率范围从非常好(4a)到几乎消失,这取决于叠氮基硼烷的取代。对于许多硼氮化硼,在4 K下在有机玻璃中测量了零场分裂参数D。在[H 12 ]环己烷和[D]的混合物中,测量了4a的小一级动力学同位素效应(k H / k D = 1.35)。12]环己烷表明插入反应是一致的,并涉及硼氮化亚硝的单重态。在CBS-QB3和CCSD(T)/ TZ2P的理论水平上的计算表明,各种各样的硼基氮烯的单重态和三重态的相对能量,甚至它们的最
Synthesis and characterization of new azido(o-phenylenedioxy)boranes and azidobicyclononylboranes †
作者:Wolfgang Fraenk、Tassilo Habereder、Thomas M. Klapötke、Heinrich Nöth、Kurt Polborn
DOI:10.1039/a907222e
日期:——
The boron azides azido(o-phenylenedioxy)borane, (1,2-C6H4O2)B(N3) 1, and azidobicyclononylborane, C16H28NB2(N3) 3, have been prepared by the reaction of the corresponding chloroborane with trimethylsilyl azide. Both reactions were also carried out in the presence of pyridine. The resulting donorâacceptor complexes 1·C5H5N 2 and 3·C5H5N 5 and the boron azides (1, 3) have been characterized by analytical and spectroscopic methods. The molecular structures of 1, 3 and 5 have been confirmed by a single crystal X-ray diffraction study. The formation of 3 has been observed by a low temperature 11B NMR study and a probable mechanism is discussed.
The Reaction of CO
<sub>2</sub>
with a Borylnitrene: Formation of an 3‐Oxaziridinone
作者:Virinder Bhagat、Julia Schumann、Holger F. Bettinger
DOI:10.1002/anie.202105171
日期:2021.10.18
The reaction of a borylnitrene with carbon dioxide is studied under cryogenic matrix isolation conditions. Photogenerated CatBN (Cat=catecholato) reacts with CO2 under formation of the cycloaddition product CatBNCO2, a 3-oxaziridinone derivative, after photoexcitation (>550 nm). The product shows Fermi resonances between the CO stretching and ring deformation modes that cause unusual 13C and 18O isotopic
研究了低温基质隔离条件下硼基氮烯与二氧化碳的反应。光致CatBN(Cat=儿茶酚)在光激发(>550 nm)后与CO 2反应形成环加成产物CatBNCO 2 ,一种3-氧杂氮丙啶酮衍生物。该产品显示了 CO 拉伸和环变形模式之间的费米共振,导致不寻常的13 C 和18 O 同位素位移。 3-氧氮杂环丙烷酮的计算分析表明,这种环状氨基甲酸酯的张力小于 α-内酯或 α-内酰胺。
Insertion into dihydrogen employing the nitrogen centre of a borylnitrene
作者:Holger F. Bettinger、Matthias Filthaus、Patrik Neuhaus
DOI:10.1039/b817270f
日期:——
A borylnitrene, accessible from the corresponding azide by UV photolysis in a solid D2 matrix at 3 K, inserts into D2 upon visible light irradiation under cryogenic conditions.
在 3 K 的固体 D2 基质中,通过紫外线光解可以从相应的叠氮化物中获得一种硼硝基烯,在低温条件下用可见光照射后,这种硼硝基烯会插入 D2 中。
Metal-Free Conversion of Methane and Cycloalkanes to Amines and Amides by Employing a Borylnitrene
作者:Holger F. Bettinger、Matthias Filthaus、Holger Bornemann、Iris M. Oppel