Experiment 9 Synthesis Of Benzoic Acid

Experiment 9 Synthesis Of Benzoic Acid In this experiment, we will proceed to synthesize benzoic acid from bromobenzene by converting the latter into a grignard reagent (ph mgx). the grignard reagent is then reacted with gaseous carbon dioxide (co 2) to form benzoic acid. the grignard synthesis of a carboxylic acid (r cooh) is achieved by a carbonization step by bubbling carbon. Through the preparation of benzoic acid through oxidation in order to obtain a purified recrystallized product and collect the data necessary along the way i was able to find my % yield of benzoic acid of 50% at the end of the experiment. references: goldwhite, h.; tikkanen, w. experiment 11 of benzoic acid, experiments in general chemistry.

Experiment 9 Synthesis Of Benzoic Acid Experiment 9: synthesis of benzoic acid via carbonylation of a grignard reagent . organometallic compounds such as grignard reagents are versatile intermediates in the synthesis of alcohols, carboxylic acids, alkanes and ketones. the synthesis of a grignard reagent requires the reaction of an alkyl or aryl halide with magnesium metal. Decant the reaction solution carefully with stirring (use a teflon rod), over a period of 15 30 seconds. make sure to never touch the dry ice isolation of the benzoic acid: place your beaker in an ice bath. to the resulting sticky mass, add 25 ml of 2.5 mol l hcl, and finally 15 ml ordinary diethyl ether. Salt of benzoic acid. a proton from the hydronium ion in the acid solution is added to the benzoate anion to make benzoic acid. add 10 ml of dilute (1 3 m) hydrochloric acid to the glassy solid in the beaker or flask. stir thoroughly until the mixture is no longer gummy and any magnesium metal has dissolved. crude benzoic acid will precipitate. In this video the synthesis of benzoic acid is shown. usually a phase transfer catalyst is used, but as it can be seen, it still works without one.patreon: h.