## Abstract The ^13^C n.m.r. spectra of 11 derivatives of 2,3‐dimethylenenorbornane, 1–11, of 5 derivatives of 2,3‐dimethylene‐7‐oxanorbornane, 12–16, and of 2,3,5,6‐tetramethylene‐7‐oxanorbornane (17) have been measured and the chemical shifts have been assigned. The effects of 1‐methyl, 5‐hydroxy
Ether cleavage of isomeric 2,3-(dimethoxycarbonyl)-7-oxabicyclo[2.2.1]heptanes
✍ Scribed by T. A. Eggelte; H. de Koning; H. O. Huisman
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 368 KB
- Volume
- 98
- Category
- Article
- ISSN
- 0165-0513
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It was established that exclusively high regioselective C O bond cleavage of 7-oxabicyclo[2.2.1]heptane skeletons, which are unique Diels-Alder products of furans, under mild conditions using samarium(II) iodide and samarium powder yields cyclohexanol derivatives or aromatic compounds.
a Values are for individual samples. During the test, one could observe particles of the disintegrated tablet forming a ring at the bottom of the fabricated flask (Fig. 3). It is not likely that one would use the type of dissolution vessel shown in Fig. 2 when the other two types are commercially