Examples of 'heat at reflux' in a sentence
Meaning of "heat at reflux"
heat at reflux: a process in chemistry involving the repeated evaporation and condensation of a liquid to purify it
How to use "heat at reflux" in a sentence
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heat at reflux
Heat at reflux under an argon atmosphere overnight.
The reaction mixture was allowed to heat at reflux overnight.
Heat at reflux for two hours and cool.
Fit with condenser and heat at reflux under nitrogen overnight.
Heat at reflux for two hours.
Place a nitrogen inlet and condenser on the flask and heat at reflux overnight.
Heat at reflux under nitrogen for twenty hours.
After the addition is complete, heat at reflux.
Heat at reflux under nitrogen for three hours.
The reaction mixture was allowed to heat at reflux for 6 h before heating was discontinued.
Heat at reflux overnight before concentrating the reaction mixture.
Stir at room temperature under an argon atmosphere overnight, then heat at reflux overnight.
Heat at reflux.
Place under an argon atomsphere and heat at reflux for 24 hours.
Heat at reflux constantly removing water with a Dean Stark apparatus.
See also
Stir at room temperature for 18 hour then heat at reflux for 4 hours.
Heat at reflux under a nitrogen atmosphere for 8 days.
Evaporate the mixture, dilute with methanol, heat at reflux for 2 hours, and evaporate.
Heat at reflux for 3 h with azeotropic removal of water.
Allow to warm and heat at reflux 18h.
Heat at reflux overnight, cool to room temperature and filter.
Add 80 mL isopropyl acetate and heat at reflux for 3 h.
Heat at reflux using a Dean-Stark trap to remove water.
Slowly add sulfuric acid ( 2 eq ) and heat at reflux.
Heat at reflux for 5 hours and evaporate the solvent in vacuo.
Then add more 1-chloroethyl chloroformate ( 1 mL ) and heat at reflux overnight.
Heat at reflux for 3 hours then stir overnight at room temperature.
Remove from cooling bath and heat at reflux for 3.5 hours.
Heat at reflux for one hour, then cool and remove insoluble material by filtration.
Add 40 cm3 of concentrated hydrochloric acid then heat at reflux for 3 hours.
Heat at reflux for one hour, cool.
Then heat at reflux for 6 hours.
Heat at reflux with stirring for 3 hours.
Heat at reflux for 6 hours, evaporate to dryness.
Heat at reflux under an argon atmosphere for 38 hours.
Heat at reflux 2h and concentrate.
Heat at reflux for 3 h, cool to room temperature and filter.
Heat at reflux for 48h and then cool to room temperature.
Heat at reflux 2 h, cool to room temperature and let stand over 2 days.
Heat at reflux for 3 h, then dilute with MeOH and filter hot.
Heat at reflux for 6 hours, and filter off the sodium chloride formed.
Heat at reflux for 3 hours, cool to room temperature and stir for 3 days.
Heat at reflux for 2 hours, cool and pour into dilute aqueous sodium hydroxide.
Heat at reflux 2h, allow to cool, and concentrate.
Heat at reflux with removal of water for 2.5 hr.
Heat at reflux for 38 minutes, cool and filter.
Heat at reflux temperature for 18 h.
Heat at reflux for 2h.
Heat at reflux 16h, allow to cool, and remove the toluene layer.
Heat at reflux 5h, allow to cool, concentrate, and partition with EtOAc and water.
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