Olefinic stereoselection in the [2,3]-Wittig rearrangement of α,β-disubstituted allylic ethers forming trisubstituted olefins

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• 作者：Tomooka ; Katsuhiko ; Igarashi ; Tatsuya ; Kishi ; Naoyuki ; Nakai ; Takeshi
• 关键词：[2 ; 3]-Wittig rearrangement ; olefinic stereoselection ; Z-trisubstituted olefins
• 刊名：Tetrahedron Letters
• 出版年：1999
• 出版时间：August 20, 1999
• 年：1999
• 卷：40
• 期：34
• 页码：6257-6260
• 全文大小：206 K

文摘

The E/Z-selectivities in the [2,3]-Wittig rearrangements of secondary β-(methyl or silyl)allylic ethers are shown to depend critically on the nature of groups on the carbanion terminus, thereby permitting elucidation of the structural requirements for attaining high Z-selectivity.