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  • Benzoin

    495 Words  | 2 Pages

    Benzoin has a secondary alcohol as well as a ketone functional group which is oxidized into benzil with nitric acid. Oxidation of alpha-hydroxyketone occurs to form alpha-diketone. Hydroxyl group adds as a nucleophile on the carbonyl carbon of alcohol with nitric acid to form organic nitrate. Nitric acid is protonated to form benzil. Rearrangement of alpha-diketone benzil occurs. Hence, the addition of potassium hydroxide to benzil yields a carboxylic salt. Hydrochloric acid added to the potassium

  • Multistep Synthesis Chemistry Experiment

    1756 Words  | 8 Pages

    synthesis of the final product, tetraphenylcyclopentadienone. The first step of the experiment was the condensation of benzaldehyde to yield benzoin. Thiamine catalyst along with water and ethanol were added to the benzaldehyde, then NaOH was added until the solution turned yellow. After recrystallization, the product was benzoin. Step two was the oxidation of benzoin to benzil.

  • Oxidation Of Benzoin To Benzil

    269 Words  | 2 Pages

    carried out was an oxidation of benzoin to benzil using a recyclable copper catalyst, cupric acetate. The cupric acetate acted as an electron acceptor in a redox type reaction. The benzoin donated an electron to cupric acetate and formed the Cu+ ion while becoming a benzoin radical cation. The benzoin radical cation lost a hydrogen to the Cu+ ion forming acetic acid. Another redox cycle between Cu2+ and the benzoin radical took place, forming a second Cu+ ion and the benzoin cation lost a proton to another

  • Benzoin Synthesis Lab Report

    875 Words  | 4 Pages

    experiment will involve the conversion of Benzoin into Benzil through oxidation using nitric acid. Benzoin was synthesized in a previous experiment using two Benzaldehyde molecules and thiamine hydrochloride as a catalyst. The reaction is known as a Benzoin condensation reaction. This experiment utilized a wide a variety of techniques including reflux; filtering using a Buchner funnel; a melting point analysis; and an IR spectroscopy. The total yield for Benzoin was 3.506 grams which resulted in a

  • Copperacetate Ammonium Nitrate Oxidation Of Benzoin To Benzil

    3918 Words  | 16 Pages

    SYNT m o d u l a r · l a b o r a t o r y · p r o g r a m · i n · publisher: H. A. Neidig c h e m i s t r y 738 organic editor: Joe Jeffers Copper-Catalyzed Oxidation of Benzoin to Benzil prepared by Carl T. Wigal, Lebanon Valley College PURPOSE OF THE EXPERIMENT Oxidize benzoin to benzil using ammonium nitrate and copper(II) ion as a catalyst, monitoring the reaction by thin-layer chromatography. Characterize the product using melting point measurement and infrared spectroscopy. EXPERIMENTAL

  • Chem Lab Essay

    870 Words  | 4 Pages

    extracted benzoic acid and measure the MP. 11) Dry out the methylene chloride solution that contain the benzoin and the dibromobenzene by the use of anhydrous sodium sulfate. 12) Pipet the remaining methylene chloride to a new beaker. Place the flask in hot water bath, and boil the methylene chloride out, leaving the benzoin and the dibromobenzene . 15) to separate the benzoin and the dibromobenzene, a crystallization should be performed 16) Heat some of the hexane to boiling and

  • Table 1 Organizes All Observational And Statistical Data

    1705 Words  | 7 Pages

    are the peaks present in the experimental samples that support the pure identity of the product. General observations during and after procedures were noted and are displayed above. Figure 4. IR spectra of benzaldehyde Figure 5. IR spectra of benzoin

  • Multistep Synthesis of Benzilic Acid

    2109 Words  | 9 Pages

    Multi-Step Synthesis of Benzilic Acid from Benzoin Abstract: The main purpose of this experiment was to convert a secondary alcohol to a ketone, utilizing a mild and selective oxidizing agent. In addition, this converted alpha diketone was then subjected to rearrangement to a carboxylate salt, then acidification, to produce an alpha-hydroxyacid. In this experiment, benzoin was used and converted into benzil, which was then used to synthesize benzillic acid. The yields were not ideal: .081g of benzil-

  • Multistep Lab

    1416 Words  | 6 Pages

    Title: Oxidation of Benzoin and Rearrangement of Benzil to Produce Benzilic Acid Abstract The objective of the lab was to produce benzilic acid from benzoin. Benzoin was successfully oxidized with nitric acid to form benzil. The percent yield of benzil was 59.26% and the melting point range was 94.1-95.5°C. The literature melting point of pure benzil is 95°C, which indicates the correct product was obtained. Benzil was then rearranged using potassium hydroxide to form benzilic

  • Essay about Synthesis of Benzilic Acid

    1107 Words  | 5 Pages

    Synthesis of benzilic acid from benzoin utilizing a multi-step reaction. Names: Arian Karim TA Name: Sayantan Das Lab Day & Time: Thursday 7:30-11:40 Lab Section #: Abstract The main purpose of this experiment was to synthesize benzilic acid from benzoin. This requires a multistep synthesis with benzyl as an intermediate product. The first step required HNO3 as an oxidizing agent and the second step required KOH and HCl. The percentage yields of benzil and benzilic acid were 59.5%