Accession Number : ADD014672

Title :   Method for Synthesis of Diacetylenic Compounds.

Descriptive Note : Patent, filed 24 Dec 86, patented 19 Sep 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Schnur, Joel M ; Singh, Alok

Report Date : 19 Sep 1989

Pagination or Media Count : 5

Abstract : A method for synthesizing a diynoic acid having the formula CH3(CH2) n-C(triple bond)C-C(triple bond)C-(CH2)mCO2H comprising the steps of: selecting a one-halo alkyne from the group consisting of CH3(CH2)nC(triple bond)CX, where X is a selected halogen; selecting an omega alkynoic acid having the formula, HC(triple bond)C(CH2)mCO2H; dissolving the alkynoic acid in an aqueous solution of base; adding a catalytic amount of cuprous halide dissolved in an aqueous solution of alkylamine to the aqueous solution of base; adding a catalytic amount of cuprous halide dissolved in an aqueous solution of alkylamine to the aqueous solution of alkynoic acid; adding a reducing agent to the solution of alkynoic acid and cuprous halide; adding the one halo alkyne to the solution; adding as much more of the reducing agent to the solution as is necessary to maintain the cuprous ion in the cuprous state; wherein m is selected from the group of 5, 6, 7, 8, 9, 10, and 11, and n is selected from the group of 7, 8, 9, 10, 11, 12, 13, 14, 15, and 16. Keyword: Patents. (js)

Descriptors :   *ALKYNES, COPPER COMPOUNDS, HALIDES, IONS, PATENTS, SOLUTIONS(GENERAL), SOLUTIONS(MIXTURES), WATER

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE