138036-89-2Relevant academic research and scientific papers
Highly selective propylene dimerization catalyzed by C1- symmetric zirconocene complexes
Huang, Wenzhong,Wang, Yan,Ma, Haiyan,Huang, Jiling
, p. 413 - 422 (2014/06/09)
A series of ethylene-bridged C1-symmetric ansa-(3-R-indenyl) (fluorenyl) zirconocene complexes (1, 2, 3, 4, 5, 6, 7, 8, 9) incorporating a pendant arene substituent on the 3-position of indenyl ring have been synthesized. The structure of complex 4 was further confirmed by X-ray diffraction analysis. When activated with methylaluminoxane, four sterically less encumbered complexes 1, 2, 4 and 5 could catalyze the dimerization of propylene in toluene at 100°C to afford 2-methyl-1-pentene with high selectivities up to 95.7-98.4% and moderate activities of 2.00×10 4 to 7.89×104g (mol-Zrh)-1. Copyright
Highly selective ethylene trimerization catalyzed by half-sandwich indenyl titanium complexes with pendant arene groups and MAO
Zhang, Yanlu,Ma, Haiyan,Huang, Jiling
, p. 85 - 95 (2013/07/05)
A series of half-sandwich indenyl titanium complexes [Ind-(bridge)-Ar] TiCl3 (C1-C9) bearing pendant arene group on indenyl ring have been synthesized and used for the catalytic ethylene trimerization to 1-hexene in the presence of MAO. The mol
PHASE TRANSFER CATALYZED TERT-ALKYLATIONS OF CYCLOPENTADIENE AND INDENE: INDICATIONS FOR SET PROCESSES
Dehmlow, Eckehard V.,Bollmann, Christof
, p. 5773 - 5776 (2007/10/02)
Scope and mechanism of the PTC tert-alkylation of cyclopentadienide anion have been investigated.On the side of the anion, the reaction is limited to cyclopentadiene and indene, whereas many tertiary as well as secondary and primary alkylating agents can be employed.Hexamethylcyclopentadiene 8, for instance, is available easily.Tert-alkylations of this type are more effective if 4,4'-bipyridinium salts are present in addition to a phase transfer catalyst.The reactions involve probably an initial single electron transfer (SET) step.
