✦ LIBER ✦
Notiz über den Austausch einer Cyanogruppe durch eine Dialkylaminogruppe in Cyclobuten-1,2-dicarbonitril und (E)-Äthylendinitril
✍ Scribed by Daniel Belluŝ
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- German
- Weight
- 591 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
A Note on Exchange of a Cyanogroup for a Dialkylaminogroup in Cyclobutene‐1,2‐dicarbonitrile and (E)‐Ethylenedinitrile
Reactions of electrophilic cyclobutene‐1,2‐dicarbonitrile and (E)‐ethylene‐dinitrile with secondary amines lead to 1:1 adducts of type 3 and 12, respectively. These adducts eliminate hydrocyanic acid either thermally or, more conveniently for preparative purposes, upon treatment with a strong base (e.g. t‐butoxide or methoxide) affording 2‐dialkylaminocyclobutenes‐1‐carbonitriles 4 and 3‐dialkylamino‐acrylnitriles 13, resp., in high yields.