3-Silaazetidine: An Unexplored yet Versatile Organosilane Species for Ring Expansion toward Silaazacycles
作者:Wanshu Wang、Song Zhou、Linjie Li、Yuanhang He、Xue Dong、Lu Gao、Qiantao Wang、Zhenlei Song
DOI:10.1021/jacs.1c04667
日期:2021.7.28
Small-ring silacycles are important organosilane species in main-group chemistry and have found numerous applications in organic synthesis. 3-Silaazetidine, a unique small silacycle bearing silicon and nitrogen atoms, has not been adequately explored due to the lack of a general synthetic scheme and its sensitivity to air. Here, we describe that 3-silaazetidine can be easily prepared in situ from diverse
Organic silicon compound, method of its production, and photoreceptor
申请人:Kao Corporation
公开号:US05290963A1
公开(公告)日:1994-03-01
The present invention is directed to a silicon-containing triarylamine compound represented by the formula (1): ##STR1## wherein Q.sub.2 and Q.sub.3 independently represent a hydrogen atom or --CH.sub.2 SiR.sub.1 R.sub.2 R.sub.3 group (R.sub.1, R.sub.2 and R.sub.3, which may be identical or not, independently represent an alkyl group, cycloalkyl group, aralkyl group or aryl group which may be substituted); Ar.sub.1, Ar.sub.2 and Ar.sub.3 independently represent an arylene group which may be substituted; Q.sub.1 represents a --CH.sub.2 SiR.sub.1 R.sub.2 R.sub.3 group, --CH.sub.2 SiR.sub.1 R.sub.2 R.sub.4 group (R.sub.4 represents the following: ##STR2## wherein Q.sub.2 and Q.sub.3 independently represent a hydrogen atom) or --CH.sub.2 SiR.sub.1 R.sub.4 R.sub.4 group, a method of its production and a photoreceptor for electrophotography incorporating it as a charge transport material. The photoreceptor is very excellent in sensitivity and durability.
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):