Aluminum carbenoids in allene cyclopropanation

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• 作者：Ilfir R. Ramazanov ; Alsu V. Yaroslavova ; Usein M. Dzhemilev ; Oleg M. Nefedov
• 刊名：Tetrahedron Letters
• 出版年：2010
• 出版时间：1 December 2010
• 年：2010
• 卷：51
• 期：48
• 页码：6268-6269
• 全文大小：346 K

文摘

The reactions of aluminum carbenoids with alkyl- and phenyl-substituted allenes and cyclic allenes are studied. An efficient method for the synthesis of substituted spiropentanes was developed. 1,2-Cyclononadiene was selectively converted into bicyclo[7.1.0]dec-1-ene. An unusual transformation of α-methylphenylallene into a spiroindane derivative under the action of Et₃Al–CH₂I₂ was found.