Some phthalonitriles and 1H-isoindole-1, 3 (2H)-diimines containing silicon (s) in their alkoxy substituent groups are prepared and used for phthalocyanine formation reactions. Silicon–carbon bonds often survive under the reaction conditions using K 2 CO 3 in N, N- dimethylformamide (DMF), but are often broken in the presence of sodium hydride. Silicons in the alkoxy groups do not affect the electronic absorption spectra of phthalocyanines in ...
