The experiment carried out was the nitration of methyl benzoate need help answering questions #3, 4, 6, and 7 n. This reaction is a typical example of electrophilic aromatic substitution the use of a mixture of sulfuric acid and nitric acid is the classic way to make the nitronium ion (no 2 +. Macroscale nitration of methyl benzoate please note that unlike many of the earlier handouts last semester, which were written in great detail, for this semester most of the handouts just provide suggestions and changes. Nitration of methyl benzoate this reaction is another example of electrophilic aromatic substitution (s e ar) in today’s experiment the reactant is the ester, methyl benzoate and the electrophile is the nitronium ion. The theoretical yield of the nitration of methyl benzoate is dependent upon the quantity of the starting materials once the initial quantity of methyl benzoate is known, the molar ratio of reactants to products can be used to determine the theoretical yield.
The nitration of methyl benzoate is a typical electrophilic aromatic substitution reaction the electrophile is the nitronium ion which is generated by the interaction of concentrated nitric and sulfuric acids. Nitration of methyl benzoate abstract: this procedure demonstrates the nitration of methyl benzoate to prepare methyl m-nitrobenzoate methyl benzoate was treated with concentrated nitric and sulfuric acid to yield methyl m-nitrobenzoate. Organic chemistry lab test #2 study play experiment #5 how are the ortho and meta nitrobenzoates separated orgo lab experiment 14: nitration of methyl benzoate 11 terms experiment 26: chain growth polymerization of styrene and methyl methacrylate 33 terms lab 15- polymerization.
This nitration of methyl benzoate is a typical electrophilic aromatic substitution or eas reaction in this experiment, we used an eas reaction to nitrate methyl benzoate (oil of wintergreen) the electrophile in this reaction is the nitronium ion, no2+, which is formed in situ by the reaction of concentrated nitric acid with concentrated sulfuric acid. For the first reaction, the nitration of methyl benzoate, a yield of 7832 g was achieved and based on melt point analysis, the chemical was likely to be m-nitrobenzoate although an ester is a deactivating compound, the reaction appeared to proceed reasonably well, with a good overall yield. Prepare a nitration mixture by adding 3 ml of concentrated sulfuric acid cautiously to 3 ml of concentrated nitric acid cooling the methyl benzoate in ice bath, add the nitration mixture drop-wise using a small graduated plastic pipette and mix by gentle swirling with a string rod. Nitration of methyl benzoate jamie stewart spring 2014 nitration background alkenes contain pi bonds that are electron rich because of the electrons in the bond (=), which makes then susceptible to electrophiles. In this experiment you will prepare methyl benzoate by reacting benzoic acid with methanol using sulfuric acid as a catalyst since this is a reversible reaction, it will reach an equilibrium that is described by the equilibrium constant, keq.
Jasperse chem 365 nitration lab 3 stemmed pipet, over 1-4 minutes, to the methyl benzoate/sulfuric acid solution, which should still be kept cold in the ice bath and shaken periodically. Chem 36 section 1 experiment #2, synthesis #1: nitration of methyl benzoate february 20, 2007 introduction: electrophilic aromatic substitutions are reactions in which a hydrogen atom on an aromatic ring is replaced by an electrophile. Nitration of methyl benzoate description class practical audience: teacher age group: 16 to 18 years subjects: nitration of methyl benzoate - instructions experiment nitration of methyl benzoate - student sheet experiment download additional information the royal society of chemistry would like to thank former rsc school teacher.
Electrophilic aromatic substitution: nitration of methyl benzoate benzene rings are components of many important natural products and other useful organic compounds therefore, the ability to put substituents on a benzene ring, at specific positions relative to each other, is a very. Nitration of methyl benzoate to form methyl-m-nitrobenzoate via aromatic substitution linh ngoc thuy nguyen seattle central community college professor: dr esmaeel naeemi date: february 21st, 2012 abstract in this experiment, methyl-m-nitrobenzoate, followed the electrophilic addition of aromatic ring, would be formed from the starting. Experiment 5 nitration of methyl benzoate (electrophilic aromatic substituition) objectives 1) to prepare and calculate the percentage yield of methyl m-nitrobenzoate by electrophilic aromatic substituition 2) to get the melting point of the product introduction aromatic substituition is. 1 nitration of methyl benzoate background information: methyl benzoate is an aromatic compound structurally related to benzene the aromatic ring, being electron rich, reacts with electrophiles. Nitration of methyl benzoate benzene and somewhat less reactive aromatic compounds such as methyl benzoate can be nitrated with a mixture of nitric and sulfuric acids that ionizes completely to generate the nitronium and hydronium ions.
Reaction of methyl benzoate with nitric acid to begin the reaction i added 6ml of 18m sulfuric acid with 305g methyl benzoate to a 25ml erlenmeyer flask, submerging the flask into an ice-salt bath to cool to ~0°c. Back to table of contents experiment 6: preparation of methyl benzoate (40 points) i summary in this experiment you will prepare methyl benzoate by reacting benzoic acid with methanol using sulfuric acid as a catalyst. 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. Nitration of methyl benzoate 09/04/2015 – 09/18/2015 nitration of methyl benzoate abstract: the purpose of this experiment was to complete the nitration of methyl.
The nitration of methyl benzoate, c6h8o2, undergoes such type of reaction with concentrated nitric acid and sulfuric acid to yield methyl m-nitrobenzoate from the methyl benzoate, methyl m-nitrobenzoate will be formed and will undergo purification by re-crystallizing with methanol. For the results, the mass of the conical flask was 89222g, adding 10 drops of methyl benzoate having 90121g, and used by difference, the mass of methyl benzoate with 01988 the mass of recrystallized methyl m nitrobenzoate is 01026g, and % yield with 3879. Nitration of methyl benzoate purpose: the main objective of this experiment was to synthesize methyl nitrobenzoate from methyl benzoate, using the mixture of nitric and sulfuric acid by performing the process of electrophillic aromatic substitution.