1. Malachite green is synthesised from methyl benzoate by treating the latter with the Grignard reagent prepared from 4-bromo-N,N-dimethylaniline. The mechanism of the reaction in detail is given below.
Write the mechanism for the formation of Malachite Green from methyl benzoate. Be sure to show...
Please answer this question. In both Malachite Green and Crystal Violet, the positive charge may be delocalized onto different nitrogens. Draw one structure of Crystal Violet and then show the movement of electrons that allows you to draw two other resonance structures in which there is a positive charge on nitrogen. 7. 8. Explain why Malachite Green and Crystal Violet are referred to as "triarylmethane dyes."
What is the reaction drawn out for the synthesis of malachite green and crystal violet using methyl benzoate for malachite green and diethyl carbonate? grignard reagent was 4-bromo-n-n-dimethyl aniline magnesium bromide, also please show reaction of forming this reagent using 4-bromo-n-n-dimethylaniline, anhydrous tetrohydrofuran and magnesium turnings.
1. Choose one of the two dyes prepared from this lab and write out its complete mechanism. Assume the Grignard reagent has already been formed. 2. (a) What would happen to the color of your dye if you added sodium hydroxide to the solution until the pH reached 10? Why? (b) Show a mechanism from this reaction. For malachite green: Weigh 0.105 g of methyl benzoate into a small clean vial. Add 1 mL anhydrous tetrohydrofuran to the vial. For...
can you please answer both of these questions. the dyes are crystal violet and malachite green Choose one of the two dyes prepared from this lab and write out its complete mechanism, Assume the Grignard reagent has already been formed (a) What would happen to the color of your dye if you added sodium hydroxide to the solution until the pH reached 10? Why? (b) Show a mechanism from this reaction. 1. 2.
Write a mechanism for the nitration of methyl benzoate (major product only) Include formation of the electrophile from the reaction of nitric acid with sulfuric acid. Only one resonance structure is needed for the intermediate in the EAS portion of the mechanism
Write a reaction mechanism to show how the major mononitrated product forms when protonated methyl benzoate (a nucleophile) combines with nitronium ion (an electrophile). Use the curved-arrow formalism. Show all lone pairs and formal charges.
1. Write the mechanism for the synthesis reaction for Nitration of Methyl Benzoate C₆H₅CO₂CH₃ + HONO₂ --------> C8H7NO4 H₂ O Methylbenzoate + Nitric Acid (H₂ SO4 ) Methyl m-nitrobenzoate water Write the complete mechanism for the reaction. Be sure to use expanded structural formulas for all chemical species. Include all bonds, non-bonding electrons, formal charges, and electron-flow arrows. DO NOT use bond-line formulas, but rather explicitly show atomic symbols. For this mechanism, show the individual resonance contributors for the arenium...
i need help with the prelab questions please Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepare a Grignard reagent, phenyl magnesium bromide, from bromobenzene and magnesium metal. The Grignard reagent will then react with methyl benzoate to form triphenylmethanol. Introduction Grignard reagents, such as organomagnesium halides, were discovered in 1910 by French chemist Victor Grignard. The Grignard reaction is one of the most general methods for carbon- carbon bond formation in all of organic chemistry....
• Use the curved-arrow notation to draw the mechanism for the formation of 2-methyl-2-hexanol from n-butylmagnesium bromide. • Discuss, using the mechanism, why it is important to use anhydrous diethyl ether in this reaction. • Describe how you would purify the final product by distillation. What obstacles would you run into?
S RROwn as nucleophilic addition. The C-O bond is highly polarized, making carbonyl compounds electrophilic at carbon. If the Grignard reagent reacts with an aldehyde, ketone or ester, the ultimate product is an alcohol. Overall Reaction 0 Br Me PartA Part B Pre-lab questions (15 points) Show the mechanism of the reaction of bromobenzene with magnesium metal in anhydrous diethyl ether There are many inert solvents that could be used but diethyl ether was chosen because it can assist the...