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13C NMR Chemical Shifts and CH Coupling Constants of Substituted 4-Ylidenebutenolides |
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| Authors: | Soon Ng Hiok-Huang Lee |
| Institution: | 1. Department of Chemistry , University of Malaya , 59100, Kuala Lumpur, Malaysia;2. Department of Chemistry , National University of Singapore , 10, Kent Ridge, Crescent, Singapore , 0511 |
| Abstract: | The 13C chemical shifts and CH coupling constants for 6 substituted 4-ylidenebutenolides are reported. The CH coupling constants are useful in helping to determine the stereochemistry of the substituted exocyclic double bond. |
| Keywords: | 4-Ylidenebutenolides 13C NMR chemical shifts CH coupling constants |