P-Cyanobenzoyl chloride

PEKs that are subsequently end capped with nitrile functions have been prepared by Friedel-Crafts polymerization. For example, m-hexaphenyl ether are reacted with p-cyanobenzoyl chloride with AICI3 as catalyst in dry 1,2-dichloroethane to form a nitrile end capped oligomer. In another study, 5-cyanoisophthaloyl chloride was used as a nitrile-containing comonomer for the Friedel-Crafts polymerization. ... 

Also obtained by reaction of p-cyanobenzoyl chloride with anisole in the presence of aluminium chloride in benzene [1653]. 

To 50 mL of an ice cold solution of 0.83 M sodium hydroxide was added 8.07 g (40.0 mmol) of (4-methoxyphenyl)-2-aminoethanone hydrochloride. After 30 min at 0 °C, a solution of 4-cyanobenzoyl chloride (6.51 g, 39.3 mmol) in 60 mL of tetrahydrofuran was added dropwise concomitantly with 50 mL of the sodium hydroxide solution over 1.5 h. After the addition was complete, the mixture was stirred for an additional 12 h. The reaction mixture was chilled and the precipated product was collected by filtration, dried and used without further purification, 6.01 g (52%), m.p. 190.0-193.5 °C. 

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