Devise a synthesis of 1-pentyne using one of the starting materials and any of the reagents below using the fewest steps possible. If you need fewer than the 3 stepsallowed, enter "none" for reagents in the remaining unused steps.Starting materialsHC=CH HC=C-CHO1Reagentsa NaNH, 1 NH (D)b NaOH/H₂Ociodomethane2Starting materialReagent for step 1Reagent for step 2Reagent for step 3HC=C–CH,CH,3diodoethanee 1-bromopropanef 2-bromopropaneHCEC-CH₂CH₂CH₂CH₂4g 1-bromo-3-methylbutaneh t-butyl bromidei H₂/Pd on carbonCH₂HC=C-C-CH₂5Hk H'NH (I)CH₂HC=C-C-CH₂CH₂j H₂/ Lindlar catalystI Na/NH₂(0)6

Synthesise the 1pentyne from suitable alkyne and select suitable reagents

Devise a synthesis of 1-pentyne using one of the starting materials and any of the reagents below using the fewest steps possible. If you need fewer than the 3 steps allowed, enter "none" for reagents in the remaining unused steps. Starting materials HCECH HOEC CHO 1 Reagents a NaNH, NH(I) b NaOH/H₂O c iodomethane 2 Starting material Reagent for step 1 Reagent for step 2 Reagent for step 3 HCEC-CH₂CH₂ 3 diodoethane e 1-bromopropane f 2-bromopropane CH₂ HC=C–CH,CH,CH, CHO HC C-C-CH₂ H 4 g 1-bromo-3-methylbutane h t-butyl bromide i H₂/Pd on carbon 5 CH₂ HC=C-C-CH₂ CH₂ к H I NЊ (!) I Na/NH₂(0) 6 jH₂ Lindlar catalyst

Devise a synthesis of 1-pentyne using one of the starting materials and any of the reagents below using the fewest steps possible. If you need fewer than the 3 steps allowed, enter "none" for reagents in the remaining unused steps. Starting materials HCECH HOEC CHO 1 Reagents a NaNH, NH(I) b NaOH/H₂O c iodomethane 2 Starting material Reagent for step 1 Reagent for step 2 Reagent for step 3 HCEC-CH₂CH₂ 3 diodoethane e 1-bromopropane f 2-bromopropane CH₂ HC=C–CH,CH,CH, CHO HC C-C-CH₂ H 4 g 1-bromo-3-methylbutane h t-butyl bromide i H₂/Pd on carbon 5 CH₂ HC=C-C-CH₂ CH₂ к H I NЊ (!) I Na/NH₂(0) 6 jH₂ Lindlar catalyst

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...

See similar textbooks

Similar questions

13
Propose an efficient synthesis for the following transformation: OH Ph Ph- -Ph Ph The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A 1) MeMgBr 2) H3O* 1) PhMgBr 2) H3O* 1) EtMgBr 2) H30* E F Na2Cr207, H2SO4. H2O H20, H2SO4, 1) R2BH 2) H2O2, NAOH HgSO4
propose the synthesis of one FROM two, using reagents with a maximum of three carbons and any inorganic reagents
1
Of the compounds shown below, the one numbered enamine H CH3 на CH3CH₂CHCH₂CH₂ 1 When a ketone reacts with 1 mole of alcohol, the resultant product is classified as acetal Ohemiacetal acetal hemiketal CH₂ Ph CHỊCH CHCH CH 2 CH₁ CH₂ حمله CH₂CH₂C=CHCH₂ 3 What is the best choice of reagent to perform the following transformation? Ph is an CI
Using the Grignard reagent selected above, provide a synthesis of the target molecule from acetylene: OH HC=CH This transformation can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as “EBF"). There is more than one correct solution, so provide just one answer. A B D NaNH2 DMP or PCC 1) CH3CH2MgBr; 2) H30* HBr E F G H H2, Lindlar's cat. H2SO4, H2O, H8SO4 NaOH dilute H2SO4 J K L 1) LIAIH4; 2) H3O* CH3CH2B1 conc. H2SO4, heat 1) R2BH; 2) H2O2, NaOH
7. Propose syntheses for the following compounds, starting with acetylene and any other reagents you might need. OH H. Br
Choose the correct reagent or series of reagents from the ones listed to carry out the following synthesis. CH₂ O 1. 03.-78°C 2. Zn, CH3CO₂H O H₂O, H+ O CH₂OH, H+ OBH3, THF followed by H₂O₂, HO™ OH CH₂
10. Please provide a synthesis for one of the following three compounds using benzaldehyde (C6H5CHO) as the starting material. You may use any other reagents that you need to complete the transformation: .N. HO HO HO Но Br Hint: you will need two steps for the transformation.
3. Propose a mechanism for the following reaction: Br- OH NaNH, + NH3 + NaBr
6
Fill in the boxes below with the appropriate reagents or structures. Each part includes a hydrolysis reaction, thus the boxes should contain two products (assume that the pH has been adjusted so that the products exist as neutrally charged species).