what reagents should be used to convert maleic anhydride into phthalic acid?
R2 - HOMOGENEOUS REACTOR (THE HYDROLYSIS OF PHTHALIC ANHYDRIDE) The following hydrolysis of phthalic anhydride (PAN) to phthalic acid (PA) reaction takes place in a batch homogeneous reactor. PAN + H20 - PA Two sets of experiments are carried out at 30 and 35°C with the same initial phthalic anhydride concentration. The reaction rate is first order with respect to PAN. The data obtained from the experimental results are given below; Temperature Phthalic Acid (°C) (min) Concentration (mol/liter) Time 30...
What was the purpose of dissolving maleic acid in warm water to convert into fumaric acid? Could anything other than water be used?
The Diels-Alder reaction you will conduct in this experiment is between cyclopentadiene and maleic anhydride (the anhydride of cis-2-butendioic acid): diene dienophile The glassware is predried and a drying tube is used to prevent the hydrolysis of maleic anhydride to maleic acid (cis-2-butendioic acid): On heating, maleic acid isomerizes to fumaric acid (trans-2-butendioic acid). Show the mixture of products that would be formed if a small amount of moisture was present in the Diels-Alder reaction you have performed.
Phenolphthalein is synthesized by the acid-catalyzed reaction of phthalic anhydride with 2 equivalents of phenol. Propose and illustrate a mechanism for the reaction in the presence of sulfuric acid and heat. OH
Geometric isomer lab Maleic Anhydride: 5.00g Maleic Acid: 1.59g Impure Fumaric: 1.37g Pure Fumaric: 1.04g Give each structure drawings to demonstrate that maleic and fumaric acid displays intermolecular H-bonding. Explain the difference in the melting points of maleic and fumaric acids by the difference in their H-bonding.
POSTLAB QUESTIONS: 1) Explain why a 4M solution of maleic anhydride is made in CH2Cl2 and not in water. Show the reaction between maleic anhydride and water. 2) Give structures for the major Diels-Alder product of the following reactions: a) 1,3-cyclohexadiene and tetrachloroethene b) 1,3-cylcohexadiene and fumaric acid, the trans isomer of maleic acid 3) Identify the starting materials that can be used to produce the compounds shown using a Diels-Alder reaction.. COOH CO2CH3 CO2CH3
why should the maleic anhydride bottles be kept tightly closed when not in use? And then explain by the equaion.
O 35. Starting with phthalic anhydride, which other reagents are needed for the Gabriel amine synthesis?: A. NH3, A / KOH, 1-pentyl-Br / H2NNH2 NH2 B. KOH, NH3 / LDA, 1-pentanol / NaOH C. NBS, Br2, A/HCI, pentanamide / NaNO2, HCI D. NH3, HC / NaH, 1-pentyl-CI/ KCN 36. Select the final product for the multi-step sequence indicated below: NHA ACCI Etci NaNO2 pyr. AICI: KOH HCI HBF4 ? BF3 Н. A. B. HO D. CI OH
Provide a full mechanism of the preparation of Endo-norbornene-cis-5,6-dicarboxylic acid with dicylclopentadiene and maleic anhydride | СОН НОС
Reaction A Xanthene Dye Resorcinol = 0.159 g Phthalic anhydride = 0.103 g Final weight = 0.173 g Amount used for UV = 3 mg Reaction B 3-(diethylamino)-phenol Phthalic anhydride = 0.102 g 3- (diethylamino)-phenol: 0. 230 g Final weight: 0.245 g Amount used for UV: 3 mg 1. Draw the exact stoichiometric reactions for each. 2. What is the theoretical weight expected for your dye synthesis?