36000-20-1Relevant articles and documents
Titanium complexes bearing bidentate benzimidazole-containing ligands and their behavior in ethylene polymerization
Zaher, Damien,Tomov, Atanas K.,Gibson, Vernon C.,White, Andrew J.P.
, p. 3889 - 3896 (2008)
A series of potentially bidentate benzimidazolyl ligands of the type (Bim)CH2D (where Bim = benzimidazolyl and D = NMe2 L1, NEt2 L2, NPri2 L3, OMe L4 and SMe L5) has been reacted with Ti(NMe2)4 to give five- and six-coordinate Ti(IV) complexes of the type [(Bim)CH2D]Ti(NMe2)3 and [(Bim)CH2D]2Ti(NMe2)2, respectively. The X-ray structures of [(Bim)CH2OMe]Ti(NMe2)3, [(Bim)CH2NMe2]2Ti(NMe2)2 and [(Bim)CH2OMe)]2Ti(NMe2)2 are reported along with an evaluation of their behavior in ethylene polymerization.
ACTIVITE ESTEROLYTIQUE DE COMPOSES ASSOCIANT UNE FONCTION THIOL ET UNE BASE HETEROCYCLIQUE. EXEMPLES DE PROCESSUS BIFONCTIONNEL
Brembilla, Alain,Roizard, Denis,Lochon, Pierre
, p. 577 - 588 (2007/10/02)
The synthesis of 19 compounds associating a thiol function and a basic heterocycle (i.e. benzimidazole, pyridine, thiazole) is described.Their esterolytic activity towards para nitrophenyl acetate (PNPA) is compared with that of simple monofunctional thiols.The influence of the substituents and of the nature of the basic heterocycle shows that the apparition of a cooperative effect depends both on the relative pKa values (thiol and heterocyclic) and on the possibility of proton exchange via the heterocyclic moiety.Examples of bifonctional process are reported in the case of benzimidazolylmethanethiol compounds, due to a basic assistancce on the neutral form of the thiol function.