## Abstract The first preparation of title compound **1** is accomplished. Its heterocyclic structure was characterized spectroscopically and by X‐ray structure analysis.
Formation of 2-oxa-8,9-diazabicyclo[3.3.1]nona-3,6-diene derivatives from pyrimidine: Utility for tetrahydropyrimidine synthesis
✍ Scribed by Kin-ya Akiba; Akira Sakaguchi; Yobsuke Yamamoto
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 110 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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## Abstract Regioselective 1,3‐dipolar cycloaddition of nitrilimines (generated in situ from dehydrohalogenation of the corresponding hydrazonoyl halides by the action of triethylamine) with 4‐arylidene‐1‐aryl‐2‐phenyl‐1__H__‐imidazol‐5(4__H__)‐one **3** afforded the corresponding spiro[4,4]nona‐2,