The Diels–Alder reactions of the oxazoles (II; R = H or Me) and (III) with diphenylcyclopropenone and acetylenic dienophiles have been studied. In no case were the bicyclic adducts isolable, but ready elision of hydrogen cyanide or a nitrile occurred, giving a γ-pyrone (V) and furans as the major heterocyclic products.
R. Grigg and J. L. Jackson, J. Chem. Soc. C, 1970, 552 DOI: 10.1039/J39700000552
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...