ISSN:
0009-2940
Schlagwort(e):
Cyclopentadiene, pentamethyl-
;
Benzene, 1,2,4,5-tetramethyl-
;
o-Xylene
;
Boron compounds, subvalent
;
Chemistry
;
Inorganic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Addition and Insertion Reactions of Subvalent Boron Species with Aromatic CompoundsDichloro(diisopropylamino)borane reacts with pentamethyl-cyclopentadienide providing the substitution product 1. A suspension of a sodium-potassium alloy in 1,2-dimethoxyethane and 1,2,4,5-tetramethylbenzene reacts with difluoro(diisopropylamino)borane to give 1,4-bis[fluoro(diisopropylamino)-boryl]-2,3,5,6-tetramethyl-2,5-cyclohexadiene(3). If o-xylene is used instead of 1,2,4,5-tetramethylbenzene in this reaction, 1,4-bis[fluoro(diisopropylamino)boryl]-2,3-dimethyl-2,5-cyclohexadiene (4) is the main product; however, the bicyclic compound 5 is also formed by formal insertion of two aminoborene units “BNR2” into the carbon skeleton and by addition of two (FBNR2) units. The compounds are characterized by elemental analyses and spectroscopically [MS, NMR (1H, 11B, 13C, 19F)]. An X-ray structure analysis of 5 is presented.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/cber.19901230505
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