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Azobrücken aus Azinen, XII. Transannulare Hydroborierung von parallel benachbarten C=C/N=N-Bindungen (1991)

Brand, Uwe ; Hünig, Siegfried ; Peters, Karl ; [et al.]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1187-1190

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ISSN: 0009-2940

Keywords: Transannular reactions ; Hydroboration ; B-N compounds ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Azo Bridges from Azines, XII., - Transannular Hydroboration of Close Parallel C=C and N=N BondsIn the systems 3 and 5 9-borabicyclo[3.3.1]nonane (9-BBN) adds to the close parallel C=C/N=N bonds in a transannular reaction. A B - N bond is formed and the borane hydrogen transferred to the C=C bond regio- and stereospecifically. The structure of the adducts 4 and 6 is elucidated by NMR spectroscopy and in the case of 4a by an X-ray analysis. The catecholborane 9 forms with 3 an azo - borane adduct at first, pointing to a stepwise transannular reaction.

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19911240534

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