Multifunctional Deuterated and Tritiated ‘Click’ Molecular Probes via Palladium-Mediated Reductive Deiodination of 5-Iodo-1,2,3-Triazoles
摘要:
Tritiated compounds are invaluable tools for in vitro and in vivo studies on bioactive molecules. Here we describe a click-chemistry'-based strategy for deuteration and tritiation of multifunctional compounds and multimodal molecular imaging probes. The method relies on a palladium-mediated reductive deiodination of 5-iodo-1,2,3-triazoles in the presence of NaBD4, deuterium or tritium gas.
3-triazoles based on palladium-catalyzedcarbonylation has been developed. The protocol utilizes readily available 5-iodotriazoles as starting materials. The obtained products were used in the syntheses of fused heterocycles as well as derivatization of the steroidal hormone cortexolone. A regioselective two-step approach to 5-carboxy-1,2,3-triazoles based on palladium-catalyzedcarbonylation has been developed