Complexity-Enhancing Acid-Promoted Rearrangement of Tricyclic Products of Tandem Ugi 4CC/Intramolecular Diels−Alder Reaction
作者:Alexei Ilyin、Volodymyr Kysil、Mikhail Krasavin、Irina Kurashvili、Alexandre V. Ivachtchenko
DOI:10.1021/jo061825f
日期:2006.12.1
The unexpected rearrangement of 2,3,7,7a-tetrahydro-3a, 6-epoxyisoindol-1-one products of the tandem Ugi 4CC/ intramolecular Diels-Alder reaction in 85% H3PO4 was discovered to provide diastereomerically pure tricyclic bis-lactam lactone-containing natural product-like products in high yield. Mechanistic rationale for the observed rearrangement was proposed and has been tentatively confirmed by additional experiments.