Rapid, quantitative, solvent-free synthesis of medium-ring diaza heterocycles from diketene–acetone adduct and diamines
作者:Clifford S. Morrison、Jana B. Lampe、Tesia C. Kolodziejczyk、Ronaldo J. Cavazos、Robby A. Petros
DOI:10.1016/j.tetlet.2014.10.007
日期:2014.11
The synthesis of medium-ringheterocycles remains a challenge largely due to unfavorable energetic factors. We are reporting syntheses of 7–9-member diazaheterocycles that go to completion in 5 min, require no solvents, and are quantitative with the only byproducts being acetone and water. The reaction products could be isolated in pure form by simply placing the mixture under vacuum. The reaction