摘要:
The invention relates to Pd and Ni complexes of biphenyl-2-yl-phosphanes and their use in catalytic C,C-, C,N- and C,O-couplings. Specifically, the invention relates to novel Pd and Ni complexes with a biphenyl-2-yl-phosphane of the formula (I). The novel complexes are used as the catalysts for C,C-, C,N- and C,O-couplings, for example for Suzuki, Grignard or Stille couplings as well as for Heck reactions.
摘要:
Bestimmte chirale Übergangsmetall-Katalysatoren, bei denen am Metall mindestens zwei strukturell unterschiedliche Mono-Phosphor-Liganden gebunden sind, von denen mindestens ein Mono-Phosphor-Ligand chiral ist, eignen sich als Katalysatoren zur Verwendung in a symmetrischen Übergangsmetáll-katalysierten Reaktionen und liefern dabei bessere Enantioselektivitäten als sie bei Verwendung nur eines einzigen strukturell definierten Liganden erreicht werden können.
摘要:
Provided is a method of synthesizing a C(sp 3 )-C(sp 2 ) cross-coupled compound comprising reacting a C(sp 3 ) coupling partner with a C(sp 2 ) coupling partner, a catalyst, and a solvent; wherein the C(sp 3 ) coupling partner comprises an organic zinc reagent; and wherein the C(sp 2 ) coupling partner comprises a heterocyclic halide or a heterocyclic pseudo halide. The method further comprises synthesis of the organic zinc reagent, wherein the synthesis comprises reacting a zinc powder with an acid, filtering, washing, and drying to obtain an activated zinc powder; and reacting the activated zinc powder with a metal iodide catalyst and a second solvent and heating for a predetermined time to obtain the organic zinc reagent.
摘要:
Cationic palladium catalysts comprising diamino carbene ligands, wherein the catalysts are of the formula [Pd(X) q (LBX) t (DC)] r+ [Y m- ] p or [Pd(X) q (LB) n (LBX) t (DC)] 2 a+ [V - ]u[Z 2- ]y, wherein DC is a diamino carbene ligand, X is an anionic ligand, LBX is a combined anionic and neutral ligand, and Y, V, and Z are non-coordinating anions. The compounds are useful in catalytic reactions, including cross-coupling reactions and hydroamination reactions. In particular, the catalysts are used in the following reactions: Suzuki-Miyaura coupling, Kumada coupling, Negishi coupling, Sonogashira coupling, Hartwig-Buchwald amination, and Heck-Mizoroki coupling.
摘要翻译:包含二氨基卡宾配体的阳离子钯催化剂,其中催化剂具有式[Pd(X)q(LBX)t(DC)] r + [Ym-] p或[Pd(X)q(LB)n(LBX)t (DC)] 2 a + [V-] u [Z2-] y,其中DC是二氨基卡宾配体,X是阴离子配体,LBX是阴离子和中性配体的组合,Y,V和Z是非 - 协调阴离子 这些化合物可用于催化反应,包括交叉偶联反应和水解反应。 特别地,催化剂用于以下反应:铃木 - Miyaura偶联剂,Kumada偶联剂,Negishi偶联剂,Sonogashira偶联剂,Hartwig-Buchwald胺化和Heck-Mizoroki偶联剂。