Dihydrogen tetrametaphosphate, its derivatives, and preparation thereof

Patent metadata

Field	Value
Publication number	US-10017388-B2
Application number	US-201515312658-A
Country	US
Kind code	B2
Filing date	Jun 5, 2015
Priority date	Jun 6, 2014
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

Dihydrogen metaphosphate can be synthesized via protonation, and can react with a dehydrating agent to afford tetrametaphosphate anhydride. A monohydrogen tetra-metaphosphate organic ester can be derived from the anhydride. A metal tetrametaphosphate complex can be prepared using a metal salt and a dihydrogen tetrametaphosphate.

First claim

What is claimed is:

1. A method of preparing a tetrametaphosphate anhydride comprising adding a reagent to a dihydrogen tetrametaphosphate wherein the reagent includes a N,N′-dicyclohexylcarbodiimide (DCC), a N,N′-diisopropylcarbodiimide (DIC), a 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDCI), a carbonyldiimidazole (CDI), a phosphoryl chloride (POCl3), or a phosphorus trichloride (PCI3), or a mixture thereof.

2. The method of claim 1 , wherein the dihydrogen tetrametaphosphate includes [P 4 O 12 H 2 ] 2− .

3. The method of claim 1 , further comprising isolating the tetrametaphosphate anhydride by removing a byproduct.

4. The method of claim 3 , wherein the byproduct includes dicyclohexylurea.

5. A compound comprising a tetrametaphosphate anhydride and a cation.

6. The compound of claim 5 , where the cation includes a [PPN] + .

7. The compound of claim 5 , wherein the cation includes a [R 4 N] + , where R is nBu, sBu, iBu, nPr, iPr, Et, or Me.

8. The compound of claim 5 , wherein the cation includes a nitrogen-based cation.

9. The compound of claim 5 , wherein the cation includes a phosphorus-based cation.

10. The compound of claim 5 , wherein the cation includes an alkali or an alkali-earth metal cation.

11. The compound of claim 5 , wherein the cation includes an ionic liquid cation.

Assignees

• Massachusetts Inst Technology

Inventors

• Jiang Yanfeng
• Chakarawet Khetpakorn
• Stauber Julia Megan
• Cummins Christopher Colin

Classifications

• C07H19/16

  Purine radicals · CPC title

• C07C43/225

  containing halogen · CPC title

• C01B25/44 Primary

  Metaphosphates · CPC title

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C07J9/00

  Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane · CPC title