M. Hirota, Shigeko Yoshida, Y. Nagawa
Nov 1, 1976
Citations
0
Influential Citations
5
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The most predominant conformation of 4-(2-thienyl)-3-butene-2-one and methyl β-(2-thienyl)acrylates were determined by the analysis of their LIS’s. The LIS’s toward higher fields were observed with some ring protons (H3’s and some of H4’s), and were best interpreted by assuming that about 20% of the shift reagent coordinates on the methoxyl oxygen atom and the rest on the carbonyl oxygen atom.