1: With alpha-chloronaphthalene T=255°C; 12 h; Heating / reflux; 2: With N,N-dimethyl-formamide T=100 - 130°C; 3 h; Heating / reflux;

in quinoline under exclusion of water; mixt. of phthalonitrile, anhyd. GaCl3 and distd. deoxygenated quinoline refluxed for 1 h; cooled to ca. 273 K; according to J. P. Linsky et al., Inorg. Chem., 1980, 19, 3131; filtered; washed with toluene and MeOH; dried at 383 K; elem. anal.;