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Neue bororganische Ringe mit benachbarten Bor‐Atomen Katalysierte 1,2‐Diborierung von Alkinen
Author(s) -
Herberich Gerhard E.,
Ganter Christian,
Wesemann Lars
Publication year - 1990
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19901230110
Subject(s) - chemistry , stereochemistry , medicinal chemistry , ring (chemistry) , catalysis , organic chemistry
New Organoboron Rings with Neighboring Boron Atoms. Catalyzed 1,2‐Diboration of Alkynes The new 1,2‐diamino‐1,2‐diboracycloalkanes (CH 2 ) n (BNEt 2 ) 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 Et 2 O–BF 3 to produce the new 1,4‐dibora‐2‐cycloalkenes (CH 2 ) n (BNEt 2 ) 2 (CR=CR') 5 ( n = 3,4 and R,R' = e.g. H, Me, Et).