苯-顺-和反-1,2-二氢二醇以显着不同的速率经历酸催化脱水:k cis / k trans = 4500。这可以通过形成不同初始构象的β-羟基碳正离子中间体来解释,其中之一是通过芳香族无键共振结构(HOC 6 H 6 + ↔ HOC 6 H 5 H +)放大的超共轭稳定。MP2 计算和苯并退火对苯离子稳定性的不利影响,由 p K R暗示对苯、1-萘和 9-菲离子分别测量的 -2.3、-8.0 和 -11.9 支持了这一解释。
Diimine metal complexes, methods of synthesis, and methods of using in oligomerization and polymerization
申请人:Small L. Brooke
公开号:US20070021608A1
公开(公告)日:2007-01-25
Methods for making α-diimine metal complexes are described. The methods comprise forming an α-diimine metal complex imine bond in the presence of a metal salt or an α-acylimine metal complex. The method is particularly using for the production of α-diimine metal complexes having two different α-diimine nitrogen groups. The α-diimine metal complexes are useful for polymerizing or oligomerizing olefins.
A process comprising contacting a) an alkene, b) a hydrogen-boron bond containing compound, c) an α-diimine metal salt complex comprising an α-diimine iron salt complex or an α-diimine cobalt salt complex, and d) a group 1 metal borohydride under conditions suitable to form an alkylboron compound. A process comprising contacting a) an alkene, b) a hydrogen-boron bond containing compound, and c) an α-diimine metal salt complex comprising an α-diimine iron methylenetrihydrocarbylsilyl complex or an α-diimine cobalt methylenetrihydrocarbylsilyl complex, to form an alkyl-boron compound under conditions suitable to form an alkylboron compound. A process comprising contacting an alkene, a hydrogen-boron bond containing compound, and an α-diimine metal salt complex to form an alkyl-boron compound under conditions suitable to form an alkylboron compound.
Diimine metal complexes, methods of synthesis, and method of using in oligomerization and polymerization
申请人:Small L. Brooke
公开号:US20070027334A1
公开(公告)日:2007-02-01
Novel α-diimine metal complexes, particularly iron complexes are disclosed. The α-diimine metal complexes are produced by forming one of the α-diimine metal complex imine bonds in the presence of a metal salt or an α-acylimine metal complex. α-diimine metal complexes having two different α-diimine nitrogen groups may be produced. The α-diimine metal complexes are useful for polymerizing or oligomerizing olefins.
Diimine Metal Complexes, Methods of Synthesis, and Methods of Using in Oligomerization and Polymerization
申请人:Small Brooke L.
公开号:US20100222577A1
公开(公告)日:2010-09-02
Novel α-diimine metal complexes, particularly iron complexes, having a phenyl sulfidyl or substituted phenyl sulfidyl metal complexing group are disclosed. The α-diimine metal complexes having a phenyl sulfidyl or substituted phenyl sulfidyl metal complexing group are produced by forming one of the α-diimine metal complex imine bonds in the presence of a metal salt or an α-acylimine metal complex. The α-diimine metal complexes having phenyl sulfidyl or substituted phenyl sulfidyl metal complexing group are useful for polymerizing or oligomerizing olefins.
The present invention provides compounds that modulate the activity of Janus kinases and are useful in the treatment of diseases related to activity of Janus kinases including, for example, immune-related diseases and cancer.