ISSN:
0009-2940
Keywords:
1,2,3-Triborolanes
;
2-Norbornene derivatives
;
Allylbenzene
;
2,5-Norbornadiene
;
1,5-Dicarba-closo-pentaborane(5)
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
1,2,3-Triborolanes from Norbornene Derivatives, Allylbenzene and Dehalogenation Products of Dichloro(diisopropyl-amino)borane; 2,4,5-Tris(diisopropylamino)-2,4,5-triborabicyclo[1.1.1]pentane-Bicyclus or Carborane?The new 1,2,3-tris(diisopropylamino)triborolanes 1, 2, 3 and 4 have been prepared by treatment of mixtures of 2-norbornene (A), 5-methylene-2-norbornene (B), 5-ethylidene-2-norbornene (C) and allylbenzene (D) with dichloro(diisopropylamino)borane with Na/K alloy in hexane. The corresponding species 5, derived from 2,5-norbornadiene (E), is relatively unstable and by a retro Diels-Alder reaction gives 2,3,4-tris(diisopropylamino)-1,5-dicarba-closo-pentaborane(5) (6). The compounds are characterized by chemical analyses, MS and NMR (1H, 11B, 13C, 15N) and 1, 4 and 6 also by X-ray structure analyses.
Additional Material:
4 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911241202
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