H3C a. b. HBr Mg, ether O CH₂ ? Reagents C. CO₂, ether then H3O+ d. BH3, THF then H₂O2, OH- H3C e. f. g. h. CH3 COOH PBr3 NaCN then H3O+* NBS, CCl4 CrO3, H₂SO4 Select reagents from the table to show how you would carry out this transformation. If more than one route exists, use the one that requires the fewest steps; in no case will more than 3 steps be required. Enter your selection as a series of letters for the reagents in the order that you wish to use them, i.e. fca.

H3C a. b. HBr Mg, ether O CH₂ ? Reagents C. CO₂, ether then H3O+ d. BH3, THF then H₂O2, OH- H3C e. f. g. h. CH3 COOH PBr3 NaCN then H3O+* NBS, CCl4 CrO3, H₂SO4 Select reagents from the table to show how you would carry out this transformation. If more than one route exists, use the one that requires the fewest steps; in no case will more than 3 steps be required. Enter your selection as a series of letters for the reagents in the order that you wish to use them, i.e. fca.

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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3. Provide the missing reagents for the following reactions CH3 CH3 a. b. с. d. HC H2C CH3 CH3 ? ? CH3 H C H3C ? CH3 Br H3C. CH3 з-з ? H.C. CH3 H3C Br !!!!!! он CH3 + HC CH3 CH3 Br OH
The synthesis above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation). Be sure to consider stereochemistry and regiochemistry. А. HBr B. Br2, CCI4 C. Br2, light D. NaCCH E. HBr, ROOR F. NANH2 G. Na, NH3 H. CH3CH,Br
From the table of available reagents select the one(s) you would use to accomplish the transformations shown below. Reagents Available a. CrOg, H2SO4. H20 е. NaBH4 b. H2, Pd f. Og then Zn, CH3CO2H c. KMNO4. H20 g. Dess-Martin Periodinane d. LIAIH4; then H30* Use the minimum number of steps; in no case are more than two steps necessary. List reagents by letter in the order that they are used; example: fa. OH CH2OH OCH3 CO2H
Which is the best method for the following transformation? OH A. 1. BH3, THF 2. H₂O₂, OH- B. H¹, H₂O C. concentrated H₂SO4 D. 1. Hg(OAc)2, H₂O 2. NaBH4
Q5. A. Complete the incomplete reactions. Also write stepwise mechanism for the given reactions. CH3 i. BH3, THE ii. H2O2, HO Br H20 ii. H3C OH H. H3C Br Br2, H20 CH3 Br OH organic solvent CH3 КОН CI V. + CHCI3 KCI CI
Give the reagents that will yield the following transformation. OH NH₂ Use the reagents provided below in your answer. Reagents available e. CH3 CH₂S Nati. f. Br₂, CCl4 a. HIO4 b. HS Na+, H₂O c. CH3O Na+, CH, OH g. H₂O d. NaCN h. H₂/Pd Submit Answer H₂SO4, H₂O j. HBr, heat k. RCO3 H I. NH3 List your answer as a series of letters in the order the reagents are used. Use the minimum number of steps possible. Reagents may be used more than once. For example, "dop" corresponds to: 1. NaCN 2. NaOH 3. PCC NOTE: The order in which you list your letters matters! Your answer: m. NBS, light n. OsO4, H₂O2 o. NaOH P. PCC Retry Entire Group 8 more group attempts remaining
6. Provide the structure for the major product in the following reactions. b. P f. OH g. Lia * Oia ملی CI 1. SOCI₂, pyr. 2. to Br 2 1. LIAIH4 (xs) 2. H₂O 1. LIAI(OR) 3H 2. H₂O 2. NH₂ Et₂CuLi 1. EtMgBr (xs) 2. H₂O 1. Mg 2. CO₂ 3. H* 4. SOCI₂, pyr 1. [H], NaBH3CN, EtNH₂ CI pyridine
In the boxes below, enter the LETTER for the reagents needed in each step to complete the following an A. H₂O, H₂O+ B. HgSO4, H₂SO4, H₂O C. CH₂CH₂Br D. KOC(CH3)3 Step 1 E. NaNH,, NH F. Na, NH3 G. 1) Sia₂BH 2) H₂O₂, NaOH H. CH3CH₂CH₂Br Step 2 J. NaOH K. CH₂CH₂CH₂CH₂Br L.H₂, Lindlar catalyst Step 3
3. Reactions. Suggest reagents for steps a-d in the following synthetic sequence CH3 CH3 CH3 b. a. HO CH3 CH3 но, LDA or strong base CH3 CH3 CH .CN с. но. CN d. CH3 H3C CN H3C CN Draw the major product of the following reactions H3C. 120 °C CN (no need to show stereochemistry) H2 (gas) cat. Pd (show relative stereochemistry)
Give the reagents that will yield the following transformation. NH₂ "OH Use the reagents provided below in your answer. Reagents available e. CH3CH₂S Nai. H₂SO4, H2₂0 f. Br2, CCl4 j. HBr, heat k. RCO3H 1. NH3 a. HIO4 b. HS Nat, H₂O c. CH3O Na+, CH, OH g. H₂O d. NaCN h. H₂/Pd Submit Answer List your answer as a series of letters in the order the reagents are used. Use the minimum number of steps possible. Reagents may be used more than once. For example, "dop" corresponds to: 1. Nach 2. NaOH 3. PCC NOTE: The order in which you list your letters matters! Your answer: m. NBS, light n. OsO4, H₂O2 o. NaOH P. PCC Retry Entire Group 4 more gr attempts remaining Privious
2. Selectivity. Show the product(s) obtained or the appropriate reagent(s) to be used for the following transformations. a. H Hill 1. CH2N2, Et2O 2. Ac₂O, pyridine A HO₂C ŎCH3 OH 3. cat. OsO4 NalO4 (excess) H2O, MeOH 4. CH2N2, Et2O 1. SAE, (-)-DIPT b. Me 앤 OH 2. MeOH, CSA 50 °C 3a. O3, MeOH CH2Cl2, -70 °C 3b. Me2S B 56%
TReferences] Specify the reagent you would use in each step of the following synthesis: Br step 1. step 2 Reagents Available a. LIAIH4 f. PBr3 k. CH;CH,MgBr b. H2SO4 g. Dess-Martin periodinane (DMP) I. CeH;MgBr (phenylmagnesium bromide) c. HCI h. NaH d. HBr i. NAOH m. (CH3)2CHMgBr n. Cro3 e. SOCI, j. CH3MGBR Write the letters of the reagents in the boxes below. Reagent for step 1 Reagent for step 2