Steric Effects in Displacement Reactions. XI. The Heats of Reaction of Diborane with Pyridine Bases. Steric Strains in Homomorphs of o-t-Butyltoluene and Hemimellitene1
Preparation and characterization of borane adducts of 3- and 4-Substituted pyridines
作者:Steven Ferrence、James Iwamoto、Sarita Levy、Nancy Massey、Robert Williams、Donald R. Martin
DOI:10.1016/s0020-1693(00)90235-4
日期:1982.1
Abstract The borane adducts of 3-fluoro-, 3- and 4-chloro-, 3- and 4-bromo-, and 3- and 4-cyanopyridine were prepared and characterized by chemical analyses, 1 H and 11 B NMR spectroscopy, IR, and differential scanning calorimetry. The 4-halopyridines as well as the two cyanopyridine derivatives were found upon heating to exhibit exothermic transtions, in contrast to the endothermic transitions of
摘要制备了3-氟,3-和4-氯-,3-和4-溴-以及3-和4-氰基吡啶的硼烷加合物,并通过化学分析,1 H和11 B NMR光谱,红外光谱对其进行了表征。和差示扫描量热法。与3-取代的吡啶硼烷的吸热转变相反,加热后发现4-卤代吡啶以及两种氰基吡啶衍生物表现出放热转变。
Amine Boranes. III. Propanolysis of Pyridine Boranes
作者:G. E. Ryschkewitsch、E. R. Birnbaum
DOI:10.1021/ic50026a029
日期:1965.4
Ultraviolet photoelectron spectra of 4-substituted pyridine-boranes