Dioxomolybdenum(VI)-Catalyzed Reductive Cyclization of Nitroaromatics. Synthesis of Carbazoles and Indoles
作者:Roberto Sanz、Jaime Escribano、María R. Pedrosa、Rafael Aguado、Francisco J. Arnáiz
DOI:10.1002/adsc.200600384
日期:2007.3.5
Reductive cyclization of nitrobiphenyls and nitrostyrenes to carbazoles and indoles, respectively, is carried out by triphenylphosphine under mild conditions catalyzed by a dichlorodioxomolybdenum(VI) complex. A one-pot procedure for the synthesis of regioselectively functionalized indoles has been developed from commercially available o-nitrobenzaldehydes and phosphoranes.
The instant invention provides procatalysts and catalyst systems for olefin polymerization, olefin based polymers polymerized therewith, and process for producing the same. In one embodiment, the instant invention provides a procatalyst comprising a metal-ligand complex of formula (I).
The instant invention provides an ethylene based polymer.
In one embodiment, the instant invention provides an ethylene based polymer comprising the polymerization reaction product of ethylene with optionally one or more α-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a dual reactor system or a multiple reactor system, wherein first catalyst system comprises; (a) one ore more procatalysts comprising a metal-ligand complex of formula (I):
The instant invention provides an ethylene based polymer.
In one embodiment, the instant invention provides an ethylene based polymer comprising the polymerization reaction product of ethylene with optionally one or more α-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a single reactor, wherein first catalyst system comprises;
(a) one ore more procatalysts comprising a metal-ligand complex of formula (I):
Polymerization Process for Producing Ethylene Based Polymers
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:US20150337063A1
公开(公告)日:2015-11-26
The instant invention provides a polymerization process for producing ethylene based polymers.
In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more α-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a single reactor, wherein first catalyst system comprises;
(a) one ore more procatalysts comprising a metal-ligand complex of formula (I):