Question

Product Isolation After stirring the reaction for 5 minutes and allowing the reaction mixture to cool (the reaction can be exothermic), remove the Claisen head from the conical vial. Slowly add 3 M HCl(aq) drop-wise. The solid may need to be broken up with a stirring rod or a pipet. Continue to add acid until the aqueous phase (bottom layer) tests positive with pH paper. Extractions can be done using the conical funnel or by using a centrifuge tube. If extractions are done in the conical vial, remove the spin vain. There should be stir bar retrievers (plastic rods with magnets in the end) that can assist with this. Otherwise the mixture can be transferred by pipet to a centrifuge tube. A small amount of diethyl ether may be used to rinse the conical vial and then added to the centrifuge to maximize product transfer. Note: At any time during the extraction processes the organic ether layer becomes too small to work with, additional solvent can be added. Diethyl ether is very volatile. Note: A second container of diethyl ether that is considered less anhydrous may be pravidad for the product isolation part of the experiment. LFullscreen

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