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A New Route to Long-Range 13C-H Couplings

✍ Scribed by J.M. Nuzillard; R. Freeman

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
240 KB
Volume
110
Category
Article
ISSN
1064-1858

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## Abstract Chemical shifts and long‐range ^13^C, ^1^H coupling constants to the two carbonyl C atoms were determined for a series of ethyl 2‐acyloxy‐2‐alkenoates. The ^3^__J__(C,H) coupling constant across the double bond is 9.5–10.1 Hz for the __E__‐ and 2.9–3.8 Hz for the __Z__‐isomer. ^3^__J__(