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Neue bororganische Ringe mit benachbarten Bor-Atomen Katalysierte 1,2-Diborierung von Alkinen (1990)

Herberich, Gerhard E. ; Ganter, Christian ; Wesemann, Lars

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 49-51

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ISSN: 0009-2940

Keywords: 1,2-Diboracycloalkanes, 1,2-diamino derivatives / 1,2-Diboration / 1,4-Diboracycloalkenes, 1,4-diamino derivatives ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: New Organoboron Rings with Neighboring Boron Atoms. Catalyzed 1,2-Diboration of AlkynesThe new 1,2-diamino-1,2-diboracycloalkanes (CH2)n(BNEt2)2 3 (n = 3) and 4 (n = 4) are prepared from the corresponding 1,ω-bis(dichloroboryl)alkanes in a two-step synthesis. The ring compounds 3 and 4 react with alkynes under the catalytic action of Et2O-BF3 to produce the new 1,4-dibora-2-cycloalkenes (CH2)n(BNEt2)2(CR=CR') 5 (n = 3,4 and R,R' = e.g. H, Me, Et).

Additional Material: 2 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19901230110

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