The Journal of Organic Chemistry

Studies of magnetic anisotropy. 2. NMR evidence for the existence of deshielding regions alongside carbon-carbon triple bonds

FB Mallory, MB Baker

文献索引：Mallory, Frank B.; Baker, Mary B. Journal of Organic Chemistry, 1984 , vol. 49, p. 1323 - 1326

全文：HTML全文

被引用次数: 11

摘要

Discussion Our results fully confirm the existence of the deshielding regions shown in Figure 1 that are predicted on the basis of the magnetic anisotropy of the carbon-carbon triple bond. 16-18 These results not only demonstrate that acetylenic deshielding exists but also show that the magnitude of this deshielding, as expected, falls off with distance. For example, as a consequence of the rapid rotation of the C-4 methyl group in acetylene 2, each of the three ...