937069-31-3Relevant academic research and scientific papers
On the bromination of the dihydroazulene/vinylheptafulvene photo-/thermoswitch
Mazzanti, Virginia,Cacciarini, Martina,Broman, Soren L.,Parker, Christian R.,Schau-Magnussen, Magnus,Bond, Andrew D.,Nielsen, Mogens B.
, p. 958 - 966 (2012)
Background: The dihydroazulene (DHA)/vinylheptafulvene (VHF) system (with two cyano groups at C1) functions as a photo-/thermoswitch. Direct ionic bromination of DHA has previously furnished a regioselective route to a 7,8-dibromide, which by elimination was converted to a 7-bromo-substituted DHA. This compound has served as a central building block for functionalization of the DHA by palladium-catalyzed cross-coupling reactions. The current work explores another bromination protocol for achieving the isomeric 3-bromo-DHA and also explores the outcome of additional bromination of this compound as well as of the known 7-bromo-DHA.
A novel route to a bromo-cyano-substituted azulene and its exploitation in the construction of an acetylenic scaffold
Petersen, Michael Axman,Kilsa, Kristine,Kadziola, Anders,Nielsen, Mogens Brondsted
, p. 1415 - 1418 (2008/09/18)
A novel route to functionalized azulenes is devised from a dihydroazulene precursor. Thus, bromination of 1,1-dicyano-2-phenyl-1,8a-dihydroazulene followed by heating in the presence of bromide ions provides an efficient way to generate 3-bromo-1-cyano-2-
