<sup>13</sup>C-NMR.-Spektroskopie von Organolithiumverbindungen bei tiefen Temperaturen. Strukturinformation aus der<sup>13</sup>C,<sup>6</sup>Li-Kopplung
作者:Dieter Seebach、Robert Hässig、Josef Gabriel
DOI:10.1002/hlca.19830660128
日期:1983.2.2
Low-Temperature 13C-NMR. Spectroscopy of Organolithium Derivatives. - 13C, 6Li-Coupling, a Powerful Structural Information
低温13 C-NMR。有机锂衍生物的光谱学。- 13 ℃,6节锂耦合,强大的结构性信息
Efficient Synthesis of Diphenyl<b><i>ketene</i></b>-<sup>¹³</sup>C<sub>2</sub>
作者:James Anderson、Simon Broughton
DOI:10.1055/s-2001-18702
日期:——
A short and efficient synthesis of doubly C-13 labeled diphenylketenefrom relatively cheap C-13 labeled carbon dioxide, as the sole source of labeled carbon, is described in 22% overall yield.