70547-85-2Relevant articles and documents
Comparison of the regiochemical behavior of zirconium and hafnium in the polyinsertion of styrenes
Galdi, Nunzia,Izzo, Lorella,Oliva, Leone
experimental part, p. 4434 - 4439 (2011/01/07)
The hafnocene-based catalyst ethylenebis(1-indenyl)hafnium dichloride/methylalumoxane, as well as its zirconium analogue, is able to oligomerize styrene, p-methylstyrene, and p-tert-butylstyrene in the presence of hydrogen to produce hydrooligomers. The c
CYCLOCONDENSATION OF 3(2H)-BENZOTHIOPHENONE AND OXIDATION PRODUCTS OBTAINED DURING THESE REACTIONS
Bergman, Jan,Egestad, Boerje
, p. 763 - 774 (2007/10/02)
The cyclocondensation of 3(2H)-benzothiophenone under acidic conditions has been studied.The symmetrical cyclotrimer tris(benzothieno)benzene was formed and under certain conditions also a rearranged cyclotrimer, tris(benzothieno)benzene.The formation of cyclotrimers was accompanied by oxidative coupling products involving the initially formed dimeric compound, 3-hydroxy-2,3-bibenzothienyl.During several of these reactions, a novel heterocycle, tris(benzothieno)oxepin, was formed.The products were studied by mass spectrometry and fragmentation pathways were determined by a linked scanning technique.