Synthesis of tetraalkyl vinylidene diphosphonate monomer
Abstract
A method of making a monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The monomer is manufactured by combining an aqueous secondary amine solution with a formaldehyde and a tetra (alkyl) methylene diphosphonate. The resulting mixture is maintained at a pH above about 6 and refluxed for two hours to enable reaction to produce the monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The product monomer is then purified to produce the final end product.
- Inventors:
-
- Knoxville, TN
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 868988
- Patent Number(s):
- 5256808
- Application Number:
- 07/985,974
- Assignee:
- University of Tennessee Research Corp. (Knoxville, TN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- DOE Contract Number:
- 00222401
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- synthesis; tetraalkyl; vinylidene; diphosphonate; monomer; method; vinylidene-1; 1-diphosphonate; manufactured; combining; aqueous; secondary; amine; solution; formaldehyde; tetra; alkyl; methylene; resulting; mixture; maintained; ph; refluxed; hours; enable; reaction; produce; product; purified; final; resulting mixture; secondary amine; tetraalkyl vinylidene; /999/
Citation Formats
Alexandratos, Spiro D. Synthesis of tetraalkyl vinylidene diphosphonate monomer. United States: N. p., 1993.
Web.
Alexandratos, Spiro D. Synthesis of tetraalkyl vinylidene diphosphonate monomer. United States.
Alexandratos, Spiro D. Tue .
"Synthesis of tetraalkyl vinylidene diphosphonate monomer". United States. https://www.osti.gov/servlets/purl/868988.
@article{osti_868988,
title = {Synthesis of tetraalkyl vinylidene diphosphonate monomer},
author = {Alexandratos, Spiro D},
abstractNote = {A method of making a monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The monomer is manufactured by combining an aqueous secondary amine solution with a formaldehyde and a tetra (alkyl) methylene diphosphonate. The resulting mixture is maintained at a pH above about 6 and refluxed for two hours to enable reaction to produce the monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The product monomer is then purified to produce the final end product.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 26 00:00:00 EDT 1993},
month = {Tue Oct 26 00:00:00 EDT 1993}
}
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Works referenced in this record:
Knoevenagel kondensationen mit TiCl4/base-IV
journal, January 1974
- Lehnert, W.
- Tetrahedron, Vol. 30, Issue 2
Synthesis of ethenylidenebis(phosphonic acid) and its tetraalkyl esters
journal, September 1986
- Degenhardt, Charles R.; Burdsall, Don C.
- The Journal of Organic Chemistry, Vol. 51, Issue 18