15. diethyl ether Added 0.5g of magnesium metal turnings and crushed with glass rod until a cloudy brown-gray appearance Attached a Claisen head with CaCl 2 and a rubber septum to the

The Grignard reagent attack the electrophilic carbonyl carbon of the benzophenone and pushed electrons up to the oxygen. Synthesis of Triphenylmethanol Purpose of this experiment: The purpose of this experiment was to synthesize triphenylmethanol. Triphenylmethanol is a white crystalline aromatic compound, which produces an intensely yellow color in a strong acidic solution due to formation of carbocation. Part II: Synthesis of Triphenylmethanol Gently swirled vial to bromobenzene Added 1.5mL of bromobenzene into a pre-weighed 10mL conical vial with 5mL of anh. The experimental assembly for the synthesis of the triphenylmethyl radical Remove the cylindrical funnel and with a pipette take out a small volume of the solution (without taking zinc which must stay in the bottom of the The solution obtained is quite colourless due to the low temperature. In order to synthesis triphenylmethanol, Grignard reagent is playing an important role because Grignard reagent is the key reagent in this experiment. 16. So, the solvent used in the experiment must not contain any water such as diethyl ether since it is a water free solvent. Evaporate all of the solvent over a hot plate. The presence of water in the process of generating Grignard reagent will causes the particular reagent to be decomposed. Using this Grignard reagent, triphenylmethanol can be synthesized in a two-step reaction first adding the reagent and then adding an acid. At this point you are be left with a mixture of triphenylmethanol and biphenyl. In 1912, Victor Grignard received the Nobel prize in chemistry for his discovery of a new series of reactions that result in the formation of a carbon-carbon bond. Measure the

Do back extraction to collect triphenylmethanol which was very slightly soluble in water due to its –OH group. The Grignard Reaction – Synthesis of Triphenylmethanol Andrea Mxxxxxxx 216 Section 176 Experiment 10 MM/DD/2010 . Dry the organic layer using sodium sulfate. In … Combine all the organic layers and dispose of the aqueous layer. Experiment 12: Grignard Synthesis of Triphenylmethanol Reactions that form carbon-carbon bonds are among the most useful to the synthetic organic chemist.

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