AB- Versus AA+BB-Suzuki Polycondensation: A Palladium/Tris(tert-butyl)phosphine Catalyst Can Outperform Conventional Catalysts.,Macromolecular Rapid Communications

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AB- Versus AA+BB-Suzuki Polycondensation: A Palladium/Tris(tert-butyl)phosphine Catalyst Can Outperform Conventional Catalysts.
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2019-12-01 , DOI: 10.1002/marc.201900521
Kenan Zhang ₁ , Roman Tkachov ₂ , Kristina Ditte ₁ , Nataliya Kiriy ₁ , Anton Kiriy ₁ , Brigitte Voit _{1,

3}

Affiliation

A Pd/Pt-Bu3 catalyst having bulky, electron-rich ligands significantly outperforms conventional "step-growth catalysts" Pd(PPh3 )4 and Pd(Po-Tol3 )3 in the Suzuki polycondensation of the AB-type arylene-based monomers, such as some of the substituted fluorenes, carbazoles, and phenylenes. In the AA+BB polycondensation, Pd/Pt-Bu3 also performs better under homogeneous reaction conditions, in combination with the organic base Et4 NOH. The superior performance of Pd/Pt-Bu3 is discussed in terms of its higher reactivity in the oxidative addition step and inherent advantages of the intramolecular catalyst transfer, which is a key step joining catalytic cycles of the AB-polycondensation. These findings are applied to the synthesis of a carbazole-based copolymer designed for the use as a hole conductor in solution-processed organic light-emitting diodes.

中文翻译：

AB-与AA + BB-铃木的缩聚反应：钯/三（叔丁基）膦催化剂的性能优于常规催化剂。

在AB型亚芳基单体的Suzuki缩聚反应中，具有庞大的富电子配体的Pd / Pt-Bu3催化剂明显优于常规的“逐步生长催化剂” Pd（PPh3）4和Pd（Po-Tol3）3。例如某些取代的芴，咔唑和亚苯基。在AA + BB缩聚反应中，Pd / Pt-Bu3与均匀的Et4 NOH有机碱在均相反应条件下的性能也更好。根据Pd / Pt-Bu3在氧化加成步骤中的较高反应活性以及分子内催化剂转移的固有优势（这是连接AB缩聚的催化循环的关键步骤），讨论了其优越的性能。

更新日期：2019-12-02

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