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Domino C–H Activation/Directing Group Migration/Alkyne Annulation: Unique Selectivity by d6-Cobalt(III) Catalysts
ACS Catalysis ( IF 11.3 ) Pub Date : 2020-03-26 , DOI: 10.1021/acscatal.9b05413
Cuiju Zhu 1 , Rositha Kuniyil 1 , Becky B. Jei 1 , Lutz Ackermann 1
Affiliation  

Distinct selectivity control in Cp*CoIII-catalyzed domino C–H activation/pyridine directing group migration/alkyne annulation has been accomplished through the nucleophilicity of an organometallic cobalt intermediate with a d6 electron configuration. Detailed mechanistic studies provided compelling evidence for a facile C–H activation along with a favorable migration of the directing group for the Cp*CoIII catalysis, rather than the β-oxygen elimination observed for a (CO)3MnI manifold.

中文翻译:

Domino C–H激活/定向组迁移/炔烃环化:d 6-钴(III)催化剂的独特选择性

通过具有ad 6电子构型的有机金属钴中间体的亲核性,完成了Cp * Co III催化的多米诺骨牌CH-H活化/吡啶引导基团迁移/炔烃环化反应中的不同选择性控制。详细的机理研究提供了令人信服的证据,证明了C–H的活化很容易,并且Cp * Co III催化的导向基团有良好的迁移,而不是(CO)3 Mn I歧管观察到的β-氧消除。
更新日期:2020-03-27
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