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Synlett 2001; 2001(8): 1237-1240
DOI: 10.1055/s-2001-16053
DOI: 10.1055/s-2001-16053
letter
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A New and Straightforward Approach to Highly Functionalized 2-Imidazolin-2-ones
Further Information
Publication History
Publication Date:
31 December 2001 (online)

Substituted aminocarbonyldiazenecarboxylates reacted with 1,3-diketones or β-ketoesters under mild reaction conditions in the presence of ZrCl4 to give highly functionalized imidazolin-2-ones via the corresponding Michael adducts. Reaction of unsymmetrical precursors resulted in the formation of only one regioisomer.
aminocarbonyldiazenecarboxylates - amination - regioselectivity - cyclizations - imidazolin-2-ones