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Zur Konformation von 2‐Alkyl‐3‐amino‐ und 2‐Alkyl‐3‐ethoxyacroleinen
Author(s) -
Skötsch Carlo,
Breitmayer Eberhard
Publication year - 1980
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19801130237
Subject(s) - chemistry , alkyl , intramolecular force , hydrogen bond , stereochemistry , medicinal chemistry , molecule , organic chemistry
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.