Methanol → Methyl 10,12-tricosadiynoate

10,12-tricosadiynoic acid (10 gm, GFS Chemicals) was dissolved in a solution containing 10 ml methanol (HPLC grade) and 10 ml chloroform (HPLC grade). The solution was stirred at room temperature and 10 drops of neat sulfuric acid was added drop wise. The solution was warmed to 100° F. for 2 hour. The reaction mixture was purified using column chromatography. The product (MeTDA) was dried using a rotovap and the material stored in a chloroform solution. The solid form of MeTDA was very unstable to polymerization and therefore kept dissolved in organic solutions. Alcoholic solutions of MePDA and MeTDA: Solids MePDA or MeTDA were dissolved in reagent grade ethanol to a concentration of 150 mg/ml. An residual polymer was removed by filtration through Whatman No. 1 filter paper. The solutions was held at room temperature or slightly above (70-75° F.) to avoid crystallization or precipitation.

1. temperatureThe solution was warmed to 100° F. for 2 hour
2. customThe reaction mixture was purified
3. customThe product (MeTDA) was dried
4. customThe solid form of MeTDA was very unstable to polymerization
5. dissolutionkept dissolved in organic solutions
6. customAn residual polymer was removed by filtration through Whatman No
7. filtration1 filter paper
8. customwas held at room temperature or slightly above (70-75° F.)
9. customcrystallization or precipitation

ORD-Eintrag

ord-d9a79769612941789e4950af457834c4

Quelldatensatz

uspto-grants-2003_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06607744B1