Upon completing a successful synthesis (shown below) you are tasked with recrystallizing this solid material in order to purify the compound. Based upon the characteristics of the product, which of the solvents below would you expect to provide the best results for a standard recrystallization? (i.e., like the type we have done in lab). You may assume all of the starting materials have been consumed to make the product. OsO4 ОН OH V Water Ethanol O Heptane O Hexane

Upon completing a successful synthesis (shown below) you are tasked with recrystallizing this solid material in order to purify the compound. Based upon the characteristics of the product, which of the solvents below would you expect to provide the best results for a standard recrystallization? (i.e., like the type we have done in lab). You may assume all of the starting materials have been consumed to make the product. OsO4 ОН OH V Water Ethanol O Heptane O Hexane

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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2. The following questions relate to the synthesis of cecropia juvenile hormone (this hormone plays an important role in insect development), which is shown below. MECOCH,CO,Et, NaH CO,Me Br CO,Et HO- then H+, heat Meo- OMe RCO3H МеО CO,Me NaH cecropia juvenile hormone a. Suggest reagents to convert 1 into 2 in two steps. b. Provide a reaction mechanism to explain how 2 is converted into 3. Now thinking backwards from the TM (cecropia juvenile hormone), give the structure of compound 5. d. Is the reaction from 5 to the TM regioselective? Explain your answer. с.
Which of the products below would you expect to be the major product/s of the following reaction? Select one or more: □ a. ..... *** I I I!!!! 1) BH 3 THF 2) H₂O₂, NaOH 4 c. none of these d. "OH "OH OH
In each reaction box, place the best reagent and conditions from the list. 1) CEN 2) 3) 4) 5) Answer Bank NANH, NaBH, acetone CH,CH, MgBr (excess) acetic acid acetate ion CH,OH, H,O* (cat.) LIAIH, (CH,),CHMgBr (excess) CH,MgBr (excess) H,0 H,0*, H,0, heat acetyl chloride
Give the major product(s) of the following reaction. НаО, сat. НА ? heat HO- он Но HO- Но HO. O There is no reaction under these conditions or the correct product is not listed here.
References) Work out this synthesis of para-nitrobenzoic acid using the same retrosynthetic approach. O= O C-OH NO₂ Propose a possible final step for your synthesis. This step must lead directly from a synthetic intermediate to the final product_ Select one of these possible synthetic intermediates, then select a reagent. Intermediate: CH3 para-nitrobenzoic acid NO₂ para-nitrotoluene NO₂ nitrobenzene C-OH benzoic acid
from the list of reagents select those that carry out the transformation above the list.please make sure the corrosponding letters are in the correct order for the reaction starting on the left.i.e. cd = 1. LiAlH4 then H3O+, 2. H2, Pd/C
Which of the following synthetic routes is the one that will most successfully generate a. 1. Brz. CH,COOH CH,CH,CH,C-OEt CH,CH,CH=CHC-OEt 2. Pyridine, heat b. ÇH, CH,CH,C-COOH 1. Na* OEt CH,(CO,Et), 2. CH,CH,Br 3. Na* OEt 4. CH,Br 5. H,O*, heat с. 1. Na* OEt CH,CH,C-OEt H,C=CHCH,CH,COOH 2. Н.С-СHCH, Br 3. Н, о", heat d. ÇO̟Et ÇO̟,Et ÇH, -CHCOOH 1. Na**OEt CH,CH-CO,Et 2. PhBr 3. H,O*, heat
Provide alternative reactants (i.e. an alkyl bromide and an aldehyde) for the Grignard synthesis of 3-octanol. List the alkyl bromide first followed by a comma and then the aldehyde. (Ex. 1-bromopentane, propanal) Type your answer and submit X₂ X² Ω· Write your response here...
Consider the transformation shown below. Br HO Br i. Calculate the oxidation number for the carbon atom that experiences changes in its bonds. Nox(starting material) = Nox(product) = ii. Determine whether an oxidation, reduction, or neither took place. Answer oxidation or reduction or neither: iii. Determine the number of electrons transferred. Answer should be a positive integer: 1 iv. Provide the reagent(s) that are needed to produce the transformation shown. Reagents should be listed in alphabetical order (numbers come before letters) and separated by commas. Do not use subscripts. (Use the Reagent Cabinet List as a reference for correct formatting of your answer.) Reagents:
Give the major organic product(s) for the following reaction. NH, catalytic heat NH, i. H,N° H,N H,N NH, H,N it NH, There is no reaction under these conditions or the correct product is not listed here.
An organic chemistry Teaching Assistant (TA) suggested in your last discussion section that there is only one major organic product of the following reaction and that this reaction builds a ring. If the TA is right, draw the product in the drawing area below. If the TA is wrong, just check the box below the drawing area. CH3O O CH3O. 1. NaOMe ? 2. H3O+ Click and drag to start drawing a structure. The TA is wrong. G ☐: ☑ × 0
Complete the synthetic sequence below by providing the structures of the reaction (questions 7-8). 1 mole of HOCH,CH,OH/H > B 1. LIAIH, 1.03 H* 2. Zn/H 2. Н.О. What is the structure of B? HO. (A) (D) OH