作者:Albert R. Matlin、William C. Agosta
DOI:10.1039/p19870000365
日期:——
The four isomeric 7-isopropyl-4-hydrindanones (2)–(5) have been prepared and their configurations assigned, using arguments based on the results of equilibration of the two pairs of ketones and on the products formed on hydrogenation of enone precursors. Base-catalysed equilibration at ca. 22 °C indicates that for (3)⇄(2), –ΔG 4.5 kcal mol–1 and for (5)⇄(4), –ΔG ca. 0.1 kcal mol–1. Possible diagnostic
使用了基于两对酮的平衡结果和烯酮前体氢化形成的产物的论据,已经制备了四种异构体7-异丙基-4-氢醌(2)–(5)并指定了它们的构型。在碱催化平衡CA。22℃表明,对于(3)⇄(2),-Δ ģ 4.5千卡摩尔-1和(5)⇄(4),-Δ克Ca。0.1 kcal mol –1。简要讨论了(2)–(5)的1 H nmr光谱中可能的诊断特征。