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Chemistry Publications
Document Type
Article
Publication Date
11-27-2006
Journal
Advanced Synthesis and Catalysis
Volume
348
Issue
16-17
First Page
2385
Last Page
2390
URL with Digital Object Identifier
10.1002/adsc.20060029
Abstract
The formal [3+2] dipolar cycloaddition (or annulation) of donor-acceptor cyclopropanoate esters with pyridines and 5-nitroquinoline is reported. Electron-deficient pyridine dipolarophiles (R=CN, CO2Et, COMe) participate in the annulation whereas electron rich species do not. The product 2,3-dihydroindolizines undergo rapid autooxidation, and the X-ray structures for two of the aromatic products are reported.