Improved synthesis of cyclopropylacetylene

Details Improved synthesis of cyclopropylacetylene Improved synthesis of cyclopropylacetylene

C - Chemistry, Metallurgy

07

C

C07C 13/04 (2006.01) C07C 1/30 (2006.01)

Patent

CA 2210577

Cyclopropylacetylene is prepared by mixing a strong base and 5-halo-1-pentyne in an aprotic solvent; the temperature is allowed to rise from 0 to 150 ·C and this temperature is maintained for at least 15 minutes. The reaction mixture is then quenched with a proton source.

On prépare le cyclopropylacétylène en mélangeant une base riche et 5-halo-1-pentyne dans un solvant aprotique. On peur faire monter la température de 0 à 150 ·C et cette température est maintenue pendant au moins 15 minutes. Le mélange réactionnel est ensuite refroidi brusquement avec une source protonique.

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