Room-Temperature Nickel-Catalysed Suzuki-Miyaura Reactions of Aryl Sulfonates/Halides with Arylboronic Acids
作者:Xin-Heng Fan、Lian-Ming Yang
DOI:10.1002/ejoc.201001519
日期:2011.3
Room-temperature Suzuki―Miyaura aryl―aryl cross-coupling reactions have been achieved in high yields by using an easily accessible, air-stable Ni II ―(σ-aryl) complex as precatalyst without either the pretreatment of organometallic reagents or the presence of external reductants. The Ni II complex, in conjunction with monophosphane ligands such as PCy 3 ·HBF 4 or PPh 3 , allowed the efficient cross-coupling
室温下 Suzuki-Miyaura 芳基-芳基交叉偶联反应已通过使用易于获得、空气稳定的 Ni II-(σ-芳基) 配合物作为预催化剂以高产率实现,无需有机金属试剂的预处理或存在外部还原剂。Ni II 配合物与单膦配体如 PCy 3 ·HBF 4 或 PPh 3 结合,允许芳基磺酸盐(OTs、OMs)和/或卤化物(Cl、Br、I)与芳基硼酸在在作为碱的 K 2 CO 3 存在下,在甲苯/水中室温。
Ni<sup>II</sup>-(σ-Aryl) Complex Catalyzed Suzuki Reaction of Aryl Tosylates with Arylboronic Acids
作者:Xin-Heng Fan、Lian-Ming Yang
DOI:10.1002/ejoc.201000147
日期:2010.5
A practical, efficient protocol was developed for the Suzukireaction of aryltosylates with arylboronicacids. The process was promoted by a nickel-based catalyst system consisting of the easily available Ni II -(σ-aryl) complex and the simple ligand PPh 3 in toluene in the presence of the base K 2 CO 3 . The convenient operation, high yield, generality, and low cost make this method viable for most
为芳基甲苯磺酸酯与芳基硼酸的 Suzuki 反应开发了一种实用、有效的方案。在碱K 2 CO 3 存在下,由易得的Ni II -(σ-芳基)配合物和甲苯中的简单配体PPh 3 组成的镍基催化剂体系促进了该过程。该方法操作方便、收率高、通用性强、成本低,适用于大多数普通实验室和大规模制备。
Suzuki cross-coupling mediated by tetradentate N-heterocyclic carbene (NHC)–palladium complexes in an environmentally benign solvent
作者:Yuanhong Zhao、Yongyun Zhou、Dandan Ma、Jingping Liu、Liang Li、Tony Y. Zhang、Hongbin Zhang
DOI:10.1039/b302646a
日期:——
A highly effective, easy to handle and environmentally benign process for palladium mediated Suzuki cross-coupling was developed. By utilizing a solid support based NHCâpalladium catalyst, cross couplings of aryl bromides with phenylboronic acid were achieved in neat water under air. A high ratio of substrate to catalyst was also realized.
Pressure-sensitive adhesives and process for preparing them
申请人:Dollase Thilo
公开号:US20060257650A1
公开(公告)日:2006-11-16
The invention relates to a process for preparing a pressure-sensitive adhesive based on at least one polymer, in the course of which said at least one polymer is crosslinked, the polymer having functional groups Y and having been admixed, further, with at least one kind of functionalized particles which have at least one nonpolymeric base unit, wherein the particles having a surface modification of the base unit, the surface modification of the particles having at least one kind of functional groups X, and the crosslinking of the polymer being brought about at least in part by a reaction of the functional groups X of the particles and the functional groups Y of the polymer, and further to pressure-sensitive adhesives based on at least one crosslinked polymer component, the crosslinking of the polymer component being brought about at least in part by incorporation of the functionalized particles, the particles having at least one nonpolymeric base unit and also a surface modification of this base unit, and the surface modification of the particles having at least one kind of functional groups X which are capable of reacting with functional groups Y present in the polymer component, and also to the use of surface-modified functionalized particles having a nonpolymeric base unit as crosslinking reagents for crosslinking polymers for preparing pressure-sensitive adhesives.
本发明涉及一种制备基于至少一种聚合物的压敏胶的工艺,在该工艺中,所述至少一种聚合物被交联,该聚合物具有官能团Y,并与至少一种具有至少一种非聚合物基底单元的官能化颗粒混合、其中,颗粒具有基底单元的表面改性,颗粒的表面改性具有至少一种官能团 X,而聚合物的交联至少部分是通过颗粒的官能团 X 和聚合物的官能团 Y 反应实现的、以及基于至少一种交联聚合物成分的压敏粘合剂,聚合物成分的交联至少部分是通过加入功能化微粒实现的,该微粒具有至少一种非聚合基底单元,以及该基底单元的表面改性、颗粒的表面改性具有至少一种官能团 X,能够与聚合物组分中存在的官能团 Y 反应,还可将具有非聚合物基单元的表面改性官能化颗粒用作交联聚合物的交联试剂,以制备压敏胶。