Oxone–acetone mediated Wacker-type oxidation of benzo-fused olefins
作者:Ravindra S. Phatake、Chepuri V. Ramana
DOI:10.1016/j.tetlet.2015.04.102
日期:2015.6
oxone–acetone combination for the Wacker-type oxidation of indenes and dihydronaphthalenes leading, respectively, to indan-2-ones and 2-tetralones. The amount of the base employed in the reaction seems to switch the reaction path from dioxygenation to Wacker-type oxidation. Control experiments suggest that the reaction is not proceeding via the epoxide route and also that there is no role of trace amounts
Polymerization catalysts for producing high melt index polymers without the use of hydrogen
申请人:Chevron Phillips Chemical Company, LP
公开号:US07026494B1
公开(公告)日:2006-04-11
Various catalyst compositions including the contact product of at least one ansa-metallocene compound, at least one organoaluminum compound, and at least one activator-support are disclosed. Processes for forming such compositions and for forming polyolefins with such compositions are also disclosed. Metallocene compounds are also presented.
Novel Transition Metal Compound and Method for Preparing Polypropylene Using the Same
申请人:LG Chem, Ltd.
公开号:US20210189025A1
公开(公告)日:2021-06-24
The present disclosure provides a novel transition metal compound which exhibits excellent catalytic activity and is useful in the preparation of a polypropylene having high impact strength, and a method for preparing a homo polypropylene using the same.