Late stage iodination of biologically active agents using a one-pot process from aryl amines
作者:Nikki L. Sloan、Sajinder K. Luthra、Graeme McRobbie、Sally L. Pimlott、Andrew Sutherland
DOI:10.1039/c7ra11860k
日期:——
from readily available aryl amines via stable diazonium salts has been developed. The operationally simple procedure and mild conditions allow late-stage iodination of a wide range of aryl compounds bearing various functional groups and substitution patterns. A novel synthetic strategy involving the preparation of nitroaryl compounds followed by a chemoselective tin(II) dichloride reduction and the use
Palladium-Catalyzed Highly Selective <i>ortho</i>-Halogenation (I, Br, Cl) of Arylnitriles via sp<sup>2</sup> C–H Bond Activation Using Cyano as Directing Group
作者:Bingnan Du、Xiaoqing Jiang、Peipei Sun
DOI:10.1021/jo302765g
日期:2013.3.15
A palladium-catalyzed ortho-halogenation (I, Br, Cl) of arylnitrile is described. The optimal reaction conditions were identified after examining various factors such as catalyst, additive, solvent, and reaction temperature. Using cyano as the directing group, the halogenation reaction gave good to excellent yields. The method is compatible to the arylnitriles with either electron-withdrawing or electron-donating groups. The reaction is available to the substrate in at least gram scale. The present method was successfully applied to the synthesis of the precursors of paucifloral F and isopaucifloral F.
A one-pot radioiodination of aryl amines via stable diazonium salts: preparation of <sup>125</sup>I-imaging agents
作者:Nikki L. Sloan、Sajinder K. Luthra、Graeme McRobbie、Sally L. Pimlott、Andrew Sutherland
DOI:10.1039/c7cc06211g
日期:——
An operationally simple, one-pot, two-step tandem procedure that allows the incorporation of radioactive iodine into aryl amines via stable diazoniumsalts is described. The mild conditions are tolerant of various functional groups and substitution patterns, allowing late-stage, rapid access to a wide range of 125I-labelled aryl compounds and SPECT radiotracers.