Versatile reactivity of 3-chloro-2-phenyl-isoindole-1-carbaldehyde: hydrolysis and alkylating rearrangement to 1-amino-4-isochromanones
作者:Iaroslav Baglai、Valérie Maraval、Zoia V. Voitenko、Carine Duhayon、Yulian M. Volovenko、Remi Chauvin
DOI:10.1016/j.tet.2012.06.014
日期:2012.8
Vilsmeier–Hack conditions. This electrophilic isoindole proved to be stable under the basic conditions used in the final treatment (KOH/MeOH), and for weeks under air in the solid state. Nevertheless, the C–Cl bond proved highly sensitive to any treatment with reducing or alkylating agents targeted towards the pendant carbaldehyde group, giving various phthalimide derivatives. This unique reactivity is exploited
3-氯-2-苯基-异吲哚-1-甲醛是在维尔斯迈尔-哈克条件下由N-苯基异吲哚啉酮制得的。该亲电子异吲哚在最终处理所用的碱性条件下(KOH / MeOH)证明是稳定的,并且在空气中呈固态保持数周。然而,事实证明,C–Cl键对针对悬挂的甲醛基团的还原剂或烷基化剂的任何处理都高度敏感,从而得到各种邻苯二甲酰亚胺衍生物。这种独特的反应性被用于新氨基异色酮的选择性合成。