Neighboring Effect of a Carbonyl Group in Base-Induced Wittig-Type Rearrangements of Poly(4-nitrobenzyloxy)tropones to Bis- and Mono(α-hydroxy-4-nitrobenzyl)tropones
作者:Bing Zhu Yin、Akira Mori、Hitoshi Takeshita
DOI:10.1246/bcsj.64.3306
日期:1991.11
The base-catalyzed rearrangement of bis- and tris(4-nitrobenzyloxy)tropones gave (α-hydroxy-4-nitrobenzyl)tropones through a Wittig-type mechanism. Only the 4-nitrobenzyloxy group adjacent to the carbonyl group migrated. The carbonyl group played a role in facilitating the rearrangement by chelation with the sodium on the adjacent carbanion.
双和三(4-硝基苄氧基)托酮的碱催化重排通过 Wittig 型机制得到(α-羟基-4-硝基苄基)托酮。只有与羰基相邻的 4-硝基苄氧基迁移。羰基通过与相邻碳负离子上的钠螯合,在促进重排方面发挥了作用。