Sulfinylaminemetathesis at oxo metal species - convenient entry into imido metal chemistry
作者:Konstantin A. Rufanov、Jennifer Kipke、Jörg Sundermeyer
DOI:10.1039/c0dt01133a
日期:——
metathesis offers a more conveniententry into imido complex synthesis than the much better investigated isocyanate metathesis at oxo complexes or condensation reactions with amines and silylated amines. Improved syntheses for some known key compounds and several new complexes of the type [V(NR)Cl3] and [M(NR)2Cl2] (M = Cr, Mo, W) are described. Emphasis is put on the synthesis of formerly unknown base
描述了通过易位的N-有机和N-磺酰亚胺基官能团与弯曲的最终金属氧代官能团的交换,因此反应性非常强的亚磺酰基胺R-NSO和亚磺酰基磺酰胺R-SO 2 -NSO。事实证明,在许多情况下亚磺胺与在氧代络合物或与胺和甲硅烷基化胺的缩合反应方面研究得更好的异氰酸酯复分解相比,该复分解提供了更方便地进入亚胺基络合物合成的途径。描述了一些已知关键化合物和[V(NR)Cl 3 ]和[M(NR)2 Cl 2 ](M = Cr,Mo,W)类型的几种新配合物的改进合成方法。重点放在合成以前未知的游离碱的路易斯酸和吸电子的N-取代基,如卤代芳基和磺酰基芳基。出乎意料的是,即使[CrO 2 Cl 2 ]也被亚磺胺选择性地转化为芳基亚氨基衍生物,而没有被任何还原。二氧化硫。通过X射线晶体学测定,报道了新型卤代芳基亚氨基配合物[Cr(NAr)2 Cl 2 ] Ar = C 6 F 5和2,4,6-Cl 3 C 6 H 2的分子结构。
BIS(SALICYLALDIMINATO)TITANIUM COMPLEX CATALYSTS, HIGHLY SYNDIOTACTIC POLYPROPYLENE BY A CHAIN-END CONTROL MECHANISM, BLOCK COPOLYMERS CONTAINING THIS
申请人:——
公开号:US20030060584A1
公开(公告)日:2003-03-27
Bis(salicylaldminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with defects of the type rmr having [rrrr] content greater than 0.70 and block copolymer containing block(s) of the syndiotactic polypropylene and block(s) of poly(ethylene-co-propylene) and/or poly(alpha-olefin-co-propylene) are obtained. Certain of the catalysts provide living polymerization. Living olefin polymers and olefin terminated oligomers and polymers are also products.
Bis(salicylaldiminato)titanium complex catalysts,highly syndiotactic polypropylene by a chain-end control mechanism, block copolymers containing this
申请人:——
公开号:US20030176605A1
公开(公告)日:2003-09-18
Bis(salicylaldiminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with defects of the type rmr having [rrrr] content greater than 0.70 and block copolymer containing block(s) of the syndiotactic polypropylene and block(s) of poly(ethylene-co-propylene) and/or poly(alpha-olefin-co-propylene) are obtained. Certain of the catalysts provide living polymerization. Living olefin polymers and olefin terminated oligomers and polymers are also products.
Bis (Salicylaldiminato) titanium complex catalysts, highly syndiotactic polypropylene by a chain-end control mechanism, block copolymer containing this
申请人:Cornell Research Foundation, Inc.
公开号:US20040260042A1
公开(公告)日:2004-12-23
Bis(salicylaldiminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with defects of the type rmr having [rrrr] content greater than 0.70 and block copolymer containing block(s) of the syndiotactic polypropylene and block(s) of poly(ethylene-co-propylene) and/or poly(alpha-olefin-co-propylene) are obtained. Certain of the catalysts provide living polymerization. Living olefin polymers and olefin terminated oligomers and polymers are also products.
Bis(salicylaldiminato)titanium complex catalysts, highly syndiotactic polypropylene by a chain-end control mechanism, block copolymer containing this
申请人:Coates W. Geoffrey
公开号:US20070004883A1
公开(公告)日:2007-01-04
Bis(salicylaldiminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with defects of the type rmr having [rrrr] content greater than 0.70 and block copolymer containing block(s) of the syndiotactic polypropylene and block(s) of poly(ethylene-co-propylene) and/or poly(alpha-olefin-co-propylene) are obtained. Certain of the catalysts provide living polymerization. Living olefin polymers and olefin terminated oligomers and polymers are also products.