Abstract Nitrogen-heterocyclic phosphonates wherein the phosphonate group is ortho- or para- to the nitrogen heterocyclic group, where the compounds are characterized as follows: WHEREIN THE DOTTED LINE REPRESENTS A CYCLIC STRUCTURE WHICH CYCLIC STRUCTURE MAY BE THE SOLE CYCLIC STRUCTURE, OR MAY BE ATTACHED TO OTHER CYCLIC GROUPS. These nitrogen heterocyclic phosphonates are prepared by reacting an aromatic nitrogen-heterocyclic compound, wherein the nitrogen atom is in the form of a quaternary alkoxy derivative (N-OR hereinafter defined) with a phosphite salt, preferably in the form of an ester of the phosphite, as exemplified by the following equation: These compounds which may be characterized as phosphonates of nitrogen-heterocyclics have many uses including their use as biocides, such as bacteriocides, herbicides, corrosion inhibitors, chelating agents, etc.
A full nitrogen heterocyclic phosphonate of claim 1 which is diethyl pyridine b 2-phosphonate.
Claim 2
Dependent Claim
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A full nitrogen heterocyclic phosphonate of claim 1 which is diethyl pyridine 4-phosphonate.
Claim 3
Dependent Claim
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A mixture of full nitrogen heterocyclic phosphonates of claim 1 which is a mixture of diethyl pyridine 2-phosphonate and diethyl pyridine 4-phosphonate.
Claim 4
Dependent Claim
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The mixture of claim 4 wherein the diethyl pyridine 2-phosphonate is present in a large amount and the diethyl pyridine 4-phosphonate is present in a small amount.
Claim 5
Dependent Claim
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A full nitrogen heterocyclic phosphonate of claim 1 which is diethyl 4-methyl pyridine-2-phosphonate.
Claim 6
Dependent Claim
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A full nitrogen heterocyclic phosphonate of claim 1 which is diethyl 4-cyanopyridine-2-phosphonate.