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IR and NMR studies on the conformation of α,β-unsaturated N,N-dimethylamides. The carbonyl stretch vibration in relation to the conformation

✍ Scribed by C. Kruk; K. Spaargaren

Book ID: 113372566
Publisher: Elsevier Science
Year: 1971
Tongue: English
Weight: 253 KB
Volume: 27
Category: Article
ISSN: 1386-1425
DOI: 10.1016/0584-8539(71)80008-9

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## Abstract Two different __N__‐configurations and two different eight‐membered ring conformations were found in the diastereomeric crystalline (1__R__,3__S__)/(1__S__,3__R__)‐ and (1__S__,3__R__)/(1__S__,3__S__)‐3‐methylnefopam hydrochloride salts. ^1^H and ^13^C NMR spectroscopy showed that both