Aqueous Sodium Hydroxide Promoted Cross-Coupling Reactions of Alkenyltrialkoxysilanes under Ligand-Free Conditions
作者:Emilio Alacid、Carmen Nájera
DOI:10.1021/jo702570q
日期:2008.3.1
alkenyltrialkoxysilanes with aryl iodides, bromides, and chlorides are performed on water using sodium hydroxide as activator at 120 °C under normal or microwave heating. This process occurs in the presence of Pd(OAc)2 or 4-hydroxyacetophenone oxime-derived palladacycle 1 as precatalysts under ligand-free conditions with low Pd loadings (0.01−1 mol %) and using tetra-n-butylammonium bromide as additive. Different
the selective synthesis of (E)-alkenes via the reductive cross-coupling of alkynes and aryl halides using a bimetallic catalyst system composed of a group 4 metallocene difluoride (Cp2[M]F2; [M] = Hf or Zr; Cp = cyclopentadienide) and palladium dichloride. This reaction proceeds via a coupling between an aryl halide and an in situgenerated alkenyl metallocene intermediate derived from the group 4 metallocene
[EN] METHOD FOR COUPLING A FIRST COMPOUND TO A SECOND COMPOUND<br/>[FR] PROCÉDÉ DE COUPLAGE D'UN PREMIER COMPOSÉ À UN SECOND COMPOSÉ
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2016057771A1
公开(公告)日:2016-04-14
The present disclosure describes a method of coupling a first compound to a second compound, the method comprising: providing the first compound having a fluorosulfonate substituent; providing the second compound comprising an alkene; and reacting the first compound and the second compound in a reaction mixture, the reaction mixture including a catalyst having at least one group 10 atom, the reaction mixture under conditions effective to couple the first compound to the second compound.
METHOD FOR COUPLING A FIRST COMPOUND TO A SECOND COMPOUND
申请人:Dow Global Technologies LLC
公开号:US20170240499A1
公开(公告)日:2017-08-24
The present disclosure describes a method of coupling a first compound to a second compound, the method comprising: providing the first compound having a fluorosulfonate substituent; providing the second compound comprising an alkene; and reacting the first compound and the second compound in a reaction mixture, the reaction mixture including a catalyst having at least one group 10 atom, the reaction mixture under conditions effective to couple the first compound to the second compound.
Efficient Chromium(II)-Catalyzed Cross-Coupling Reactions between Csp<sup>2</sup> Centers
作者:Andreas K. Steib、Olesya M. Kuzmina、Sarah Fernandez、Dietmar Flubacher、Paul Knochel
DOI:10.1021/ja409076z
日期:2013.10.16
Low-toxicity chromium(II) chloride catalyzes at 25 °C within minutes the coupling reactions of various (hetero)arylmagnesium reagents with N-heterocyclic halides, aromatic halogenated ketones or imines, and alkenyl iodides. Remarkably, much lower amounts of homo-coupling side products are obtained compared to related iron, cobalt, or manganese cross-couplings.
低毒性氯化铬 (II) 在 25 °C 下可在数分钟内催化各种(杂)芳基镁试剂与 N-杂环卤化物、芳族卤代酮或亚胺以及链烯基碘化物的偶联反应。值得注意的是,与相关的铁、钴或锰交叉偶联相比,获得的均偶联副产物的量要少得多。