A study of the proton magnetic resonance of a number of coumarins and 2,2-dimethylchromens has revealed the presence of inter-ring spin–spin coupling in coumarins and confirmed the existence of a similar long-range coupling in chromens.
E. V. Lassak and J. T. Pinhey, J. Chem. Soc. C, 1967, 2000 DOI: 10.1039/J39670002000
To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.
If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.
If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.
Read more about how to correctly acknowledge RSC content.
Please wait while we load your content...