Chemoselective, Practical Synthesis of Cobaltocenium Carboxylic Acid Hexafluorophosphate

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• 作者：Stefan Vanicek ; Holger Kopacka ; Klaus Wurst ; Thomas M眉ller ; Herwig Schottenberger ; Benno Bildstein
• 刊名：Organometallics
• 出版年：2014
• 出版时间：March 10, 2014
• 年：2014
• 卷：33
• 期：5
• 页码：1152-1156
• 全文大小：216K
• 年卷期：v.33,no.5(March 10, 2014)
• ISSN：1520-6041

文摘

Cobaltocenium carboxylic acid (carboxycobaltocenium) hexafluorophosphate, a key compound for other monofunctionalized cobaltocenium salts, has been synthesized in >70% overall yield starting from cobaltocenium hexafluorophosphate by a synthetic sequence involving (i) nucleophilic addition of lithium (trimethylsilyl)ethynide, (ii) hydride removal by tritylium hexafluorophosphate, and (iii) oxidative cleavage of the alkynyl substituent by potassium permanganate.