Phenylmagnesium bromide was then transformed into a tertiary alcohol called triphenylmethanol‚ through addition of another compound called benzophenone‚ as well as additional ether. The end product of triphenylmethanol was analyzed via NMR and IR. Figure 1: Preparation of the Grignard agent by combining bromobenzene with magnesium and ether to produce phenylmagnesium bromide. Figure 2: Production of triphenylmethanol by combining benzophenone and the Grignard reagent. Introduction Grignard reagents
Premium
reaction Abstract: In this laboratory‚ triphenylmethanol was synthesised from reacting benzophenone and bromobenzene using Grignard reaction. As the reaction was to set up to produce a Grignard reagent and then recrystallize it to obtain pure sample. The percentage yield obtained was 55% and its melting point was 161 co which is within the literature value 160-163 co. In addition to that the IR spectroscopy confirmed the molecule structure to be triphenylmethanol. Introduction: The Grignard reagents
Premium Alcohol Ethanol Functional group
The Grignard Synthesis of Triphenylmethanol Abstract: Grignard synthesis of triphenylmethanol was achieved by use of the Grignard reagent phenyl magesium brominde. The organometallic grignard reagent was synthesized by use of a reflux apparatus recrystallization techniques. Once synthesized it was used in a Grignard reaction that involved nucleophilic addition to a carbonyl in order to make triphenylmethanol. The final product was solidified and recrystallized and spectral data was
Premium Magnesium Oxygen Diethyl ether
| Reactions of Grignard Reagents with Carbonyls | | | Tuesday 1:30 | 2/28/2012 | | Introduction This experiment explores the reactivity pattern for the addition of Grignard reagents to three different carbonyl groups: a ketone‚ an ester‚ and a carbonate. Grignard reagents are organometallic compounds that have a carbon-metal bond‚ such as carbon-magnesium. Grignard reagents are formed from the reaction of an alkyl‚ cycloalkyl‚ or aryl halide and magnesium metal in dry ether
Premium Magnesium Oxygen Diethyl ether
Grignard Synthesis of Tirphenylmethanol David Szuminsky Organic Chemistry Lab II Shaopeng Zhang Monday 1PM 2/10/14 & 2/24/14 - Abstract A sample of triphenylmethanol was prepared using Grignard synthesis techniques. Reflux was used in order to speed up the reaction and the final product was purified using recrystallization methods. The percent recovery and percent yield were 80.46% and 47.526%‚ respectively. A melting point range of 85-87oC was obtained from
Premium Chemistry Chemical reaction Alcohol
Mechanism for coupling reactions In this experiment‚ a Grignard reagent was prepared and reacted with benzophenone to synthesize triphenylmethanol‚ a tertiary alcohol (Figure 4). The Grignard reagent was prepared with dry magnesium turnings‚ bromobenzene and anhydrous ether. To isolate the alcohol‚ dilute acid was used to convert the magnesium salt to free alcohol and the mixture was washed
Premium Acetic acid Acid Chemistry
A. Listening to follow multistep oral directions is a listening strategy that could easily be incorporated into any lesson plan. Being able to listen and then follow multistep oral instructions is an important strategy for students to learn because it is a skill they will utilize their whole lives. They will use it do complete homework assignments‚ their bosses when they’re older and have jobs will give them multistep oral directions to follow‚ an IT person for their cable company will give them
Free Learning Communication Skill
rer. nat MOHD TAJUDIN MOHD ALI OBJECTIVE: To separate a mixture of benzoic acid and a neutral compound (triphenylmethanol or 1‚2‚4‚5-tetrachlorobenzene) into its components by extraction and also to get the melting point. THEORY: Extraction is a process of transferring a solute from one solvent to another. In this experiment‚ a mixture of benzoic acid and a neutral compound (triphenylmethanol or 1‚2‚4‚5-tetrachlorobenzene) into its components by extraction. The mixture is dissolved in diethyl ether
Premium Solvent Chemistry Laboratory glassware
Name Lab Section GTA Station 1. Grignard Reaction Post-lab report Fill out the appropriate sections below. Show all work. Your calculated answers need to match the answers in the table. Also‚ attach the benzophenone and product spectra. Indicate appropriate stretches including differences in both spectra. Results | | Amounts and units | |Initial
Premium Infrared Nucleophile
liquid for extracting organic solutes is diethyl ether. Ether is chemically very stable‚ has a low boiling point and is an excellent solvent for most organic compounds. In this experiment‚ a mixture of benzoic acid and a neutral compound ; triphenylmethanol or 1‚2‚4‚5-tetrachlorobenzene is separated into its components by the process so called extraction. The mixture is dissolved in diethyl ether. 1 M of sodium hydroxide‚ NaOH solution is used to extract the benzoic acid in the form of its water
Premium Solvent Sodium hydroxide Chemistry