ISSN:
0009-2940
Keywords:
2,3-Diboratetralin,2,3-bis(dimethylamino)-
;
2,3-Diboranaphthalenediide,2,3-bis(dimethylamino)-
;
2,5-Benzodiborocine,2,5-bis(dimethylamino)-3,4-diethyl-1,2,5,6-tetrahydro-
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Synthesis, Deprotonation, and Ring Expansion of a 2,3-DiboratetralinHerrn Prof. Dr. Helmut Werner zum 60. Geburtstag gewidmet.Reaction of K2[1,2-C6H4(CH2)2] with [Cl(Me2N)B]2 leads to 2,3-bis(dimethylamino)-2,3-diboratetralin (4a) in 58% yield. Deprotonation of 4a with lithium 2,2,6,6-tetramethylpiperi-dide yields the crystalline dilithium salt 6a. Insertion of 3-hexyne into the B—B bond of 4a results in the formation of 2,5-bis(dimethylamino)-3,4-diethyl-1,2,5,6-tetrahydro-2,5-benzodiborocine (7a) in 38% yield. The constitutions of 4a, 6a, and 7a were derived from 1H-, 11B-, 13C-NMR, and MS data and proven for 6a and 7a by X-ray,structure analyses.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19941270405
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