Metal-Free Entry to Phosphonylated Isoindoles by a Cascade of 5-exo-dig Cyclization, a [1,3]-Alkyl Shift, and Aromatization under Microwave Heating
摘要:
When o-ethynylbenzyl alpha-aminophosphonates are heated under microwave conditions, a rearrangement occurs which results in the formation of phosphonylated isoindoles. The rearrangement consists of a 5-exo-dig cyclization followed by a [1,3]-alkyl shift and finally aromatization.
Gold(III) Chloride Catalyzed Synthesis of 1-Cyanoisoindoles
作者:Thomas S. A. Heugebaert、Christian V. Stevens
DOI:10.1021/ol902031f
日期:2009.11.5
A two-step synthesis of 1-cyanoisoindoles starting from ethynylbenzaldehyde is presented. The key step is a mild, high-yielding, gold-catalyzed rearrangement of N-allylic aminonitriles.