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Hexaborylbenzene and Tetraborylethene Derivatives
Author(s) -
Maderna Andreas,
Pritzkow Hans,
Siebert Walter
Publication year - 1996
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199615011
Subject(s) - diborane , chemistry , derivative (finance) , boron , pyridine , cleavage (geology) , transition metal , bond cleavage , catalysis , borylation , combinatorial chemistry , medicinal chemistry , organic chemistry , materials science , aryl , alkyl , fracture (geology) , financial economics , economics , composite material
Transition metal catalyzed reactions of the diborylacetylene 1 allow access to perborylated CC multiply bonded systems. Cyclotrimerization of 1 results in the hexaborylbenzene 2 . Diboration of 1 with the diborane 3 provides the tetraborylethene derivative 4 . Compounds 2 and 4 react with LiMe and AlMe 3 under cleavage of the boron–oxygen bonds. The dodecamethyl derivative C 6 (BMe 2 ) 6 forms the structurally characterized complex [C 6 (BMe 2 ) 6 · 2 Li 2 O 2 C 6 H 4 · 8 NC 5 H 5 ] with pyridine and Li 2 O 2 C 6 H 4 .