Synthesis of <sup>11</sup>C-Labeled Guanidines in Supercritical Ammonia
作者:Gunilla B. Jacobson、Göran Westerberg、Karin E. Markides、Bengt Långström
DOI:10.1021/ja960667e
日期:1996.1.1
11C-labeled cyanamides to 11C-labeled guanidines was achieved in both supercritical ammonia and aqueous ammonia solutions. The latter method gave low and irreproducible yields as compared to performing the reactions in an automated supercritical fluid synthesis (SFS) system (designed for use with supercritical ammonia). Using the SFS system, total radiochemical yields of 11C-labeled guanidines of 30−85%