Hydrazide

Hydrazides are a class of compounds which have a common functional group. This consists of two nitrogen atoms which are linked via a covalent bond, and having up to four substituents. In the organic compounds is an acyl group ( the carboxylic acid hydrazide ) or sulfonyl group ( in Sulfonsäurehydrazid ) is at least one of the substituents.

Organic hydrazides

Carboxylic acid hydrazides can be prepared by the reaction of hydrazine with a carboxylic acid esters. p- toluene sulfonyl hydrazide can be represented by the reaction of p- tosyl chloride with hydrazine.

Use

The reaction of carboxylic acid hydrazides with nitrous acid ( HNO 2 ) provides Carbonsäureazide ( azides ), which in the Curtius degradation - have preparative importance - a method for the synthesis of primary amines. p- toluene sulfonyl hydrazide is a useful reagent in the organic chemistry, for example in the Shapiro reaction.

Inorganic hydrazides

From hydrazine (NH2 - NH2) derived salt-like compounds such as sodium hydrazide ( NaNH - NH2) decompose when exposed to air or moisture causing explosion. Inorganic hydrazides are obtained by reaction of metals or metal compounds with hydrazine.