The first examples of di- and cis triaryl-3a,4,5,6-tetrahydroimidazo[1,5-b]isoxazoles and their ring-opening reactions
✍ Scribed by Necdet Coşkun; Fatma Tirli Tat; Özden Özel Güven; Dinçer Ülkü; Cengiz Arıcı
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- French
- Weight
- 184 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0040-4039
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## Abstract A bicyclic pseudourea, 2,3,5,6‐tetrahydroimidazo[2,1‐__b__][1,3]oxazole (1), was isolated for the first time, and its cationic and spontaneous polymerizations were examined. Both polymerizations gave poly(1,3‐imidazolidin‐2‐one‐1,3‐diylethylene) (2) in high yields. The polymer is a crys
The synthesis of the first example of a [1,4]diazepino [2,3-c]isoxazole derivative is reported. Reaction of an imidazo[4,5-c]isoxazole with acetylenic esters has been shown to lead to the formation of 2-pyrrol-2-yl imidazoles. Here we report an alternative reaction pathway in which the fused imidazo