Synthesis of Fused [5,5]‐1,2,4‐Triazoles via Tandem Thioimidate Cyclopropane Rearrangement–Cyclization
作者:Christina Ng Di Marco、Scott D. Kuduk
DOI:10.1080/00397910600941414
日期:2006.11.1
Abstract The synthesis of fused [5,5]‐1,2,4‐triazoles via a tandem cyclopropane rearrangement–cyclization sequence is described. Optimization of the cyclization reaction was achieved thermally using iPrOH as the solvent in the presence of TEA. This method was applied to the preparation of 3‐substituted‐7‐aryl‐pyrrolo‐1,2,4‐triazoles in good to excellent yields.
Application of the thioimidate cyclopropane rearrangement to heterocyclic synthesis. Preparation of diaryl pyrrolines
作者:Ronald K. Chang、Robert M. DiPardo、Scott D. Kuduk
DOI:10.1016/j.tetlet.2005.10.009
日期:2005.12
Substituent effects on the thioimidate cyclopropane rearrangement and factors affecting regioselectivity are reported. Palladium-mediated coupling of the pyrrolothiomethylimidate rearrangement products with Grignard reagents provides diaryl pyrrolines in good yields.