A Short and Efficient Synthesis of 3-{2-[2-(Bromomethyl)thiazol-4-yl]-ethynyl}-5-fluorobenzonitrile: A Precursor for PET Radioligand [18F]SP203
作者:Kenneth Rehder、Madathil Gopinathan、Chunyang Jin
DOI:10.1055/s-0029-1216787
日期:2009.6
An improved synthesis of 3-2-[2-(bromomethyl)thiazol-4-yl]ethynyl}-5-fluorobenzonitrile, a precursor for PETradioligand [¹8F]SP203, is described, wherein a new synthon was employed for Sonogashira coupling with 3-bromo-5-fluorobenzonitrile. The new five-step synthesis provided the title compound in 56% overall yield starting from 4-bromo-2-formylthiazole. PET ligand - fluorine - Sonogashira coupling