(organic chemistry) A chemical reaction in which a pyridine is transformed into a pyridinium salt by reaction with 2,4-dinitro-chlorobenzene and a primary amine.

(chemistry) A nitration reaction in which a bromine is replaced by a nitro group on an electron-rich aryl compound such as a phenol or cresol.

plural of Zincke nitration

(chemistry) A 5-aminopenta-2,4-dienal, the product of the reaction of a pyridinium salt with two equivalents of any secondary amine, followed by basic hydrolysis.

plural of Zincke aldehyde

(organic chemistry) A special case of Friedel-Crafts alkylation, in which the reduction of the phenyl ring leads to a higher energy final product that can be used as starting material in the dienol–benzene rearrangement, among other reactions.

(dated) Alternative spelling of zinciferous

Alternative form of zincy

(mineralogy) A sulfosalt mineral containing lead and antimony.