The synthesis and characterization of 1-formyl-2-acylcyclopentadienylthallium compounds

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• 作者：Blankenbuehler ; Mark T. ; Selegue ; John P.
• 关键词：Thallium ; Cyclopentadienide ; Vilsmeier ; Formyl ; Acyl ; Carboethoxy
• 刊名：Journal of Organometallic Chemistry
• 出版年：2002
• 出版时间：January 18, 2002
• 年：2002
• 卷：642
• 期：1-2
• 页码：268-274
• 全文大小：124 K

文摘

The reaction of sodium cyclopentadienide with RCOOEt (R=Me, Ph, 2-thienyl, or OEt) or Bup>tp>COCl followed by Vilsmeier reagent in the presence of excess sodium methoxide produces the 2-substituted-6-dimethylaminofulvenes 1a–e in modest yields. Basic hydrolysis results in the formation of 2-substituted-6-hydroxyfulvenes 2a–e in very good yields. Subsequent deprotonation with TlOEt yields the 1-formyl-2-acyl or carboethoxy cyclopentadienylthallium compounds 3a–e.