13 C,  1 H long‐range coupling constants in configuration assignment of some trisubstituted alkenes | Zendy

Fischer Peter | Zendy; Schweizer Eberhard | Zendy; Langner Jörg | Zendy; Schmidt Ulrich | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

13 C, 1 H long‐range coupling constants in configuration assignment of some trisubstituted alkenes

Author(s) -

Fischer Peter,

Schweizer Eberhard,

Langner Jörg,

Schmidt Ulrich

Publication year - 1994

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.1260320918

Subject(s) - chemistry , coupling constant , chemical shift , range (aeronautics) , stereochemistry , coupling (piping) , double bond , computational chemistry , crystallography , analytical chemistry (journal) , organic chemistry , physics , mechanical engineering , materials science , particle physics , engineering , composite material

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 (C,H) values, therefore, may be used as a criterion for E/Z differentiation even if only one isomer is available. 13 C chemical shift data, in contrast, cannot be employed for a straightforward differentiation.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research