Pyrazolidine

Tetrahydropyrazole

Liquid

1.00 g · cm -3 ( 20 ° C)

10-12 ° C

138 ° C

1,477

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Pyrazolidin is a chemical compound consisting of a five membered saturated ring having two adjacent nitrogen atoms. It forms the basic structure of the pyrazolidines. Your unsaturated analogue is the pyrazole.

Representation

Pyrazolidin can be obtained from the cyclization of 1,3- dichloropropane or 1,3- dibromopropane with hydrazine.

Properties

It is a liquid compound at room temperature, the solidified at 10-12 ° C and boils at 138 ° C. The compound is stable in air, but it is highly hygroscopic.