cyclohexene‚ toluene‚ naphthalene (in hexane)‚ and the unknown (which will be known through parallel chemical tests). Three tests‚ nitration test‚ bromine test and basic oxidation test were conducted to fully differentiate each type of hydrocarbon from one another. Nitration tests resulted to three positive outcomes and two negative outcomes. A positive outcome in the nitration test shows that the hydrocarbon is aromatic while a negative outcome is aliphatic. In the bromine test‚ the results showed that
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acetone and silver nitrate in ethanol. (Below are the reaction equations). We used different substrates‚ which were primary‚ secondary‚ and tertiary. These substrates included 2-bromobutane‚ 2-bromo-2-methylpropane‚ 1-bromobutane ∞-Bromotoluene‚ bromobenzene‚ and I-bromoadamantane. This lab helped discover what kind of mechanisms (either SN1 or SN2) are involved in the performed reactions. 1. Sodium Iodine in Acetone: RX + NaI -----Acetone----> RI + NaX (X=Br) 2. Silver Nitrate in
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electrophiles (aside from benzophenone) that will react with PhMgBr to produce triphenylmethanol. Include a balanced reaction scheme for each of your answers. 4. a) Under the same exact conditions of Experiment 16‚ reaction of 4-bromophenol‚ instead of bromobenzene‚ would NOT give the analogous 3° alcohol product. Why? (HINT: why were special precautions taken to ensure anhydrous conditions when performing the Grignard
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1.2676 Insoluble in water 2-chloro-2methylpropane 92.57 -25 51.5 0.87 n/a crotyl chloride 90.55 -65 73 0.9491 insoluble in cold water benzyl chloride 126.59 -43 179 1.1 partially soluble in diethyl ether/methanol‚ insoluble in water bromobenzene 157.02 -30.6 156.2 1.495 soluble in methanol/diethyl ether bromocyclohexane 163.06 -56.5 166 1.3604 insoluble in water bromocylopentane 149.04 n/a 137 insoluble in water Sodium Iodine in acetone 149.89 661 1304 3.67 soluble in acetone/ETOH
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and chemical tests todifferentiate their intrinsic physical properties and chemical properties in terms ofstructure and behaviour. Nitration test (test for the presence of aromatic ring)‚ Bromine test (test for the presence of unsaturation)‚ and Basic oxidation test (test for an alkyl substituted benzine) were done. We were given an unknown which we tested (Nitration‚Bromine‚ Basic oxidation) and found out that it was an aromatic unsaturated hydro carbon. Keywords: hydrocarbons‚ hexane/ cyclohexane
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ABSTRACT: The electrophilic aromatic substitution reaction is the attack of a benzene ring on an electrophilic species resulting in the substitution of a proton with a functional group. The electrophilic aromatic substitution reaction nitration is used to nitrate methyl benzoate and acetanilide with a nitronium ion. Crystallization was used to purify the product. The melting point was used to determine its purity and the regiochemistry of the products. The methyl benzoate reaction product‚ methyl
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Catalytic performance of different catalysts in the coupling of bromobenzene and phenylboronic acid # Catalyst Solvent Base Temp (°C) Time (h) Yields (%) Ref 1 Pd1Ni2 DMF NaOH 140 10 93.8 [58] 2 C/CuPd EtOH K₂CO₃ 60 5 91 [59] 3 Pd/RGOa H2O K₂CO₃ 80 0.5 95 [42] 4 Pd thin film H2O K₂CO₃ 80 1.5 90 [42] 5 Pd-DS-LDHb DMF-H2O
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Lab 6: Electrophilic Aromatic Substitution(1) Nitration of Methyl Benzoate(2) Synthesis of 1‚4-Di-t-butyl-2‚5-dimethoxybenzene byFriedel-Crafts Alkylation of 1‚4-DimethoxybenzenePurpose1)To carry out the nitration of methyl benzoate‚ and then identify the major product formed (position at which nitro-group substitution takes place) by thin-layer chromatography (TLC)‚ the percent yield and the melting point range. 2)To synthesize 1‚4-Di-t-butyl-2‚5-dimethoxybenzene by Friedel-Crafts Alkylation of
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Grignard Synthesis of Triphenylmethanol Aim The aim of this experiment was to prepared Grignard reagent (phenylmagnesium bromide) from bromobenzene and magnesium‚ to use the reagent prepared to synthesise a tertiary alcohol (triphenylmethanol) by reacting reagent and ester (methyl benzoate)‚ and the product formed is analyse by infrared spectroscopy (IR)‚ melting point‚ thin layer chromatography (TLC)‚ gas chromatography mass spectrum (GCMS) and finally Nuclear Magnetic Resonance spectroscopy. Introduction
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68g)‚ anhydrous diethyl ether (15 cm3)‚ a crystal of iodine and a stirrer bar were added to the round bottomed flask (250 cm3) and anhydrous diethyl ether (25 cm3) and dry bromobenzene (15.7g) were added to the dropping funnel‚ ensuring tap was closed. Dropping funnel was opened slightly allowing a small amount of bromobenzene
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