Zur Konformation von 2-Alkyl-3-amino- und 2-Alkyl-3-ethoxyacroleinen

✍ Scribed by Skötsch, Carlo ;Breitmayer, Eberhard

• Publisher: Wiley (John Wiley & Sons)
• Year: 1980
• Tongue: English
• Weight: 242 KB
• Volume: 113
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19801130237

✦ Synopsis

Note on the Conformation of 2‐Alkyl‐3‐amino‐ and 2‐Alkyl‐3‐ethoxyacroleins

2‐Alkyl‐3‐aminoacroleins are found by ^1^H‐ and ^13^C‐NMR to prefer the E‐configuration at 30°C in hydrogen bonding solvents. In less protic solvents, the Z‐s‐Z isomer is recognized which predominates at lower temperatures. The corresponding 3‐ethoxyacroleins only exist in the E‐configuration under these conditions as their Z‐s‐Z conformation cannot be stabilized by intramolecular hydrogen bonding.