NITRILES AND ISOCYANIDES ethannitrile, acetonitrile butannitrile benzonitrile, benzoic acid nitrile 3-oxo-pentannitrile 3-methylcyclopentane carbonitrile thiazole-2-carbonitrile 3-cyano-pentanoic acid phenylisocyanide 4-isocyanobenzoic acid NITRILES AND ISOCYANIDES carboxylic acid amide carboxylic acid hydrolysis is carried out at higher temperature mostly by conc. H2SO4 REACTIVITY: 1)activation of the triple bond by the attack of electrophile at N atom followed by nucleophilic attack at carbon atom 2)a strong nucleophile is able to attack carbon atom directly 3)acidic hydrogen atom in a-position NITRILES AND ISOCYANIDES REACTIVITY: 1)activation of the triple bond by the attack of electrophile at N atom followed by nucleophilic attack at carbon atom 2)a strong nucleophile is able to attack carbon atom directly 3)acidic hydrogen atom in a-position NITRILES AND ISOCYANIDES REACTIVITY: 1)activation of the triple bond by the attack of electrophile at N atom followed by nucleophilic attack at carbon atom 2)a strong nucleophile is able to attack carbon atom directly 3)acidic hydrogen atom in a-position NITRILES AND ISOCYANIDES pKa = 25 condensation with aldehydes and ketones Knoevenagel condensation condensation with another nitrile Thorpe-Ziegler reaction REACTIVITY: 1)activation of the triple bond by the attack of electrophile at N atom followed by nucleophilic attack at carbon atom 2)a strong nucleophile is able to attack carbon atom directly 3)acidic hydrogen atom in a-position NITRILES AND ISOCYANIDES poisons and teribly smelling compounds react with electrophiles at carbon atom formic acid derivatives „isonitril“ test – a proof of amino group in biological material