Convenient syntheses of aryl and perfluoroaryl trichlorogermanes and germatranes via an organotin route

Article abstract of DOI:10.1021/om0400189

Aryl- and (perfluoroaryl)trichlorogermanes ArGeCl₃(Ar = C ₆H₅, 2-FC₆H₄, 3,5-(CF ₃)₂C₆H₃, C₆F₅, 2,3,5,6-F₄C₅N) are easily obtained in 60-80% yields from the corresponding tributyl-stannanes and GeCl₄ (1:1) at 150 °C in the absence of a solvent. Although the tin-to-germanium transmetalation of C₆F₅ group is sluggish, it is facilitated by addition of 1-2 mol % AIBN (2,2′-azobis(isobutyronitrile)).