13C??NMR.??Spektroskopie von Organolithiumverbindungen bei tiefen Temperaturen. Strukturinformation aus der 13C, 6Li??Kopplung

D Seebach, R Hässig, J Gabriel

Index: Seebach, Dieter; Haessig, Robert; Gabriel, Jozef Helvetica Chimica Acta, 1983 , vol. 66, # 1 p. 308 - 337

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Citation Number: 300

Abstract

Summary The 13C-NMR. spectra of thirteen lithiated hydrocarbons (lc-13 c, Table 2) and of eighteen a-halo-lithium carbenoids (14 c-31c, Table 3) have been recorded in donor solvent (R20, R3N) mixtures at temperatures down to-150". The organolithium species were generated from singly or doubly 13C-labelled precursors by H/6Li-or Br/6Li-exchange.-13C, 6Li-Coupling was observed of all species but those which supposedly contain contact ion ...