4,4'-Bipyridine

• 4,4 '- bipyridinyl
• 4,4 '- dipyridyl
• 4,4 '- bipyridinyl
• 4,4 '- dipyridine
• γ, γ -bipyridine

Fixed

66-68 ° C

300-301 ° C

Risk

Template: Infobox chemical / molecular formula search available

4,4 ' -bipyridine is a heterocyclic chemical compound with the formula C10H8N2. It consists of two pyridine rings that are each in the 4-position are linked.

Representation

4,4 ' -bipyridine can be obtained from the reaction of pyridine with lithium diisopropylamide and HMPT in poor yield. As a by- product is produced in small amounts of 2,4 '- bipyridine.

Another synthetic route is the metal-mediated catalysis of 4- chloropyridine and two pyridine or 4 -chloropyridine in the presence of molecules of a base on the nickel catalyst.

Properties

It is at room temperature to yield a white to yellowish solid which melts at 66-68 ° C and boils at 300-301 ° C.

In the presence of metal ions capable of forming 4,4 ' -bipyridine with these polymeric complexes.

Use

4,4 ' -bipyridine is the basic structure of the herbicide Paraquat (N, N' -dimethyl-4, 4'- bipyridinium dichloride ), which can be prepared therefrom.