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.
Studies of aminoboranes. Part II. Pyrolysis of monoalkylamine-boranes: some aminoborane trimers (1,3,5-trialkylcyclotriborazanes) and dimers
作者:M. P. Brown、R. W. Heseltine、L. H. Sutcliffe
DOI:10.1039/j19680000612
日期:——
Trimericaminoboranes (RNH·BH2)3, where R = Me, Et, Pr, Bu, and But, each of which occurs in two forms, have been prepared by pyrolyses of the corresponding amine-boranes RNH2,BH3. The dimeric aminoborane (ButNH·BH2)2 was also obtained from pyrolysis of ButNH2,BH3 and a similar dimer (PriNH·BH2)2 was the only aminoborane which could be isolated from the pyrolysis of PriNH2,BH3. Proton magnetic resonance
Studies of aminoboranes. Part I. Reactions involving transfer of hydrogen from N-monoalkyl-substituted aminoboranes and amine–boranes to dimethylaminoborane
作者:M. P. Brown、R. W. Heseltine、D. W. Johnson
DOI:10.1039/j19670000597
日期:——
Dimethylaminoborane reacts with trimericaminoboranes (RNH·BH2)3(R = Et and Pr) to give corresponding borazines: Me2N·BH2+⅓(RNH·BH2)3→ Me2NH,BH3+⅓(RNBH)3 Dimethylaminoborane also reacts with amine–boranes, RNH2,BH3(R = Me, Prn, and Pri). From reactions involving propyl- and isopropyl-amine–borane, stable 1,1-dimethyl-3,5-dialkylcyclotriborazanes, which are in effect cyclic mixed adducts, Me2N·BH2,2RNH·BH2