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.