sodium methylate in acetonitrile Sonication; Pb sheet added to a CH3CN soln. containing an equivalent quantity of phthalonitrile and 5 drops of 30percent soln of CH3ONa in methanol; flask put into an ultrasonic cleaner and maintained at 50°C for 24-72 h; blue product separated from unreacted metal by shaking and decanting with the solvent, washed with ethanol in Soxhlet equipment and dried in air; purity of 95-97percent; elem. anal.;

1,8-diazabicyclo{5.4.0}undec-7-ene in pentan-1-ol a mixt. of the Cu salt, phthalonitrile, and the base (molar ratio 2.5:10:10) was refluxed in n-pentanol for 6 h;; the ppt. was filtered off, washed with 3percent HCl soln., water, and ethanol and purified by extrn. with CHCl3; IR, UV, XRD, and elem.anal.;;

in not given extn. with EtOH and acetone, sublimation at 4E-3 Pa, 650 to 800 K;

mixt. refluxing at 255°C for 2 h; ppt. filtration, washing in acetone, drying, entrainer sublimation, filmevapn. onto quartz substrate at -45 and 250°C; SEM;

in sulfuric acid Kinetics; decompn. in H2SO4; demetallation complete in 7 d;

in further solvent(s) boiling under reflux for 3 h in 1-chloronaphthalene;