Halogen-free water-stable aluminates as replacement for persistent fluorinated weakly-coordinating anions
作者:T. Söhner、F. Braun、L. C. Over、S. Mehlhose、F. Rominger、B. F. Straub
DOI:10.1039/c4gc00928b
日期:——
for salt isolation and purification. Aletpate salts can be highly soluble even in cyclohexene, diethyl ether and toluene. Coordinated tetrahydrofuran can be thermally eliminated from sodium aletbate to yield a reactive sodium(I) adduct that abstracts chloride ligands from transition metal complexes. Iridium(I) aletbate complexes are highly active in the atom-efficient hydrogenation of a,β-unsaturated
Formal Synthesis of Galantinic Acid by Oxo-Diels-Alder Methodology
作者:Wojciech Chaładaj、Janusz Jurczak
DOI:10.1002/ejoc.201001296
日期:2011.3
a simple and efficient enantioselective route to galantinic acid. The strategy is based on a highly enantioselective hetero-Diels-Alder (HDA) reaction of 3-(4-methoxybenzyloxy)propanal with Danishefsky's diene followed by selective introduction of further stereogenic centers thanks to the rigidity of the dihydropyran ring. The key HDA reaction is catalyzed by a new salen Cr III complex bearing a 1,1-diphenylethyl
2H-benzotriazole UV absorders substituted with 1,1-diphenylalkyl groups and compositions stabilized therewith
申请人:Ciba Specialty Chemical Corporation
公开号:US06392056B1
公开(公告)日:2002-05-21
2H-Benzotriazole UV absorbers substituted at the 3-position or at the 5-position of the phenyl ring by a 1,1-diphenylalkyl moiety, particularly a 1,1-diphenylethyl group, are particularly photostable in automotive coatings, and are of low color and exhibit low volatility in thermoplastic compositions.
Titanium and zirconium complexes bearing new tridentate [OSO] bisphenolato-based ligands: synthesis, characterization and catalytic properties for alkene polymerization
作者:Tingting Song、Jianghao He、Liwei Liang、Ning Liu、Feng Li、Xiaobo Tong、Xiaoyue Mu、Ying Mu
DOI:10.1039/c9dt03225h
日期:——
crystallography analysis reveals that titaniumcomplex 4 has a five-coordinating environment surrounding the central metal atom, while the titaniumcomplex 6 and the THF-solvated zirconiumcomplex 10·THF possess a six-coordinating pseudo-octahedral environment around the central metal atom. Upon activation with MAO or AliBu3/Ph3CB(C6F5)4, all these titanium and zirconiumcomplexes exhibit moderate to high catalytic
2H-benzotriazole UV absorbers substituted with 1,1-diphenylakyl groups and compositions stabilized therewith
申请人:——
公开号:US20020169239A1
公开(公告)日:2002-11-14
2H-Benzotriazole UV absorbers substituted at the 3-position or at the 5-position of the phenyl ring by a 1,1-diphenylalkyl moiety, particularly a 1,1-diphenylethyl group, are particularly photostable in automotive coatings, and are of low color and exhibit low volatility in thermoplastic compositions.