[4+2] Cycloaddition of N-ethoxycarbonylazepine and 5,5-dimethoxy-2,3,4-tetrachlorocyclopentadiene
β Scribed by John R. Wiseman; Berni P. Chong
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 201 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Wie wir kiirzlich zeigen konnten, reagiert das aus der Carbenquelle 1 generierbare Dimethoxycarben 2 rnit dem Diazadiensystem des Tetrazins 4 in einer Folge von [4+1]-Cycloaddition und anschlieaender N2-Eliminierung in guten Ausb. zum Isopyrazol-4-on-ketal 7l). Vorfeilhafter l a t sich das nucleophi
The title compound, C 16 H 26 N 2 O 4 Si 2 , is a mesoionic compound of the sydnone class. Its molecular structure reveals the two planar ring fragments mutually twisted by 74.88 (10) . The crystal packing is characterized by a one-dimensional molecular array generated by C-HΓ Γ ΓO interactions.
The structure of the title compound, C~23~H~27~N~2~O~4~ ^+^Β·C~8~H~3~Cl~2~O~4~ ^β^, a 1:1 proton-transfer compound of brucine with 4,5-dichlorophthalic acid, has been determined at 130β K. The brucinium cations and the hydrogen phthalate anions associate through single NβH...O~carboxylate~ hydrogen bo