1-Heptyne → HCID 4663481, compound

Participants

Reaction Conditions

Reaction Steps

A 1-liter reactor was loaded with 345 mL of diglyme (RN 111-96-6) and 17.2 g (748 mmoles) of sodium (RN 7440-23-5) cut into pieces. After heating to a temperature slightly above the melting point of sodium accompanied by thorough stirring, 71.7 g (745 mmoles) i.e. 97.5 mL of 1-heptyne (RN 628-71-7) in solution in 100 mL of diglyme is then added four times at hourly intervals. The medium thickens to form a beige suspension. Stirring is continued for another 2 hours 30 minutes at the same temperature. The mixture is cooled down to 25-30° C. and poured slowly into a stirred solution of 64.8 g (700 mmoles) i.e. 61.0 mL of propionyl chloride (RN 79-03-8) in 600 mL of ethyl ether. An exothermic reaction takes place followed by stirring for 1 hour at no particular temperature.

Provenance & Evidence