Studies on aromatic amine boranes by 11B and 1H NMR
作者:C. Camacho、M.A. Paz-Sandoval、R. Contreras
DOI:10.1016/s0277-5387(00)84849-4
日期:——
Abstract 1 H and 11 B NMR spectroscopy was applied to mono- and bisboraneadducts derived from aryl-, benzyl-, phenethyl- and phenylenediamines, but no simple relationship was established between the spectroscopic data and the nature of the NB bond. Comparative studies of the affinity of aromatic amines to BH 3 by equilibria reactions may be of great value in establishing a scale of relative basicity
摘要1 H和11 B NMR光谱用于衍生自芳基,苄基,苯乙基和苯二胺的单和双硼烷加合物,但光谱数据与NB键的性质之间没有简单的关系。通过平衡反应对芳香胺对BH 3的亲和力进行比较研究可能对建立相对碱性的规模具有重要价值。
Amine-boranes as Dual-Purpose Reagents for Direct Amidation of Carboxylic Acids
作者:P. Veeraraghavan Ramachandran、Henry J. Hamann、Shivani Choudhary
DOI:10.1021/acs.orglett.0c03184
日期:2020.11.6
Amine-boranes serve as dual-purpose reagents for direct amidation, activating aliphatic and aromatic carboxylicacids and, subsequently, delivering amines to provide the corresponding amides in up to 99% yields. Delivery of gaseous or low-boiling amines as their borane complexes provides a major advantage over existing methodologies. Utilizing amine-boranes containing borane incompatible functionalities
Single and Double Electrophilic Addition Reactions to the Aniline Ring Promoted by a Tungsten π-Base
作者:Rebecca J. Salomon、Michael A. Todd、Michal Sabat、William H. Myers、W. Dean Harman
DOI:10.1021/om901048x
日期:2010.2.22
Text, figures, and CIF files giving full synthetic details for the preparation of compounds 3H−11, selected spectra of these compounds, and crystallographic information for 3H and 11. This material is available free of charge via the Internet at http://pubs.acs.org.
Addition of amine–boranes to isocyanates to form urea–borane complexes
作者:R. H. Cragg、N. N. Greenwood
DOI:10.1039/j19670000961
日期:——
The reactions of primary and secondary alkylamine–boranes with phenyl (and ethyl) isocyanate have been studied and the products are considered to be urea–boranecomplexes on the basis of chemical analysis and infrared and proton nuclear magnetic resonance spectra. Aniline–borane and phenyl isocyanate yielded uncomplexed sym-diphenylurea.
Borane adducts of some nitrogen heterocyclic compounds
作者:Christopher J. Foret、Miguel A. Chiusano、John D. O'Brien、Donald R. Martin
DOI:10.1016/0022-1902(80)80234-x
日期:1980.1
examination of the IR and NMR spectra of the aminopyridineboranes has established that the BH3 group is coordinated with the pyridyl nitrogen. The 1H NMR and 11B NMR chemical shifts indicate the presence of extensive intramolecular hydrogen bonding in 2-aminopyridineborane and some intermolecular hydrogen bonding in 4-aminopyridineborane.
喹啉,异喹啉,2-氨基吡啶,3-氨基吡啶,4-氨基吡啶和苯胺的硼烷加合物是通过每个路易斯碱与二甲基硫代硼烷的相互作用制备的。IR,1 H NMR和11 B NMR光谱已用于表征这些衍生物。对氨基吡啶硼烷的IR和NMR光谱的详细检查已经确定,BH 3基团与吡啶基氮配位。的1 H NMR和11点乙NMR化学位移表示广泛分子内氢键的在2- aminopyridineborane存在下和在4- aminopyridineborane一些分子间氢键。