Could you explain how to do this with great detail? The alkyne hydrogenation reaction has been explored extensively by the Hoffmann-La Roche pharmaceutical company, where it is usedin the commercial synthesis of vitamin A.a). Fill in the box with the product(s) for the following reaction. Indicate the stereochemistry where appropriate.На (ехcess)Lindlar catalyststarting alkynePossible products:HO.HO,HOProduct AProduct BProduct CProduct D[ Select ]b). Choose the appropriate reagent(s) to obtain the hydrogenation product with trans-stereoconfiguration at C7-C8 double bond, namelyvitamin A.[ Select ]c). How many degrees of unsaturation (HDI) is(are) in the product obtained by excessive (H2 is present in excess amount) hydrogenation ofstarting alkyne over palladium catalyst? [ Select ]

Answered: Image /qna-images/answer/47105d2a-3e04-4f17-970a-1478f6306309.jpg

a). Fill in the box with the product(s) for the following reaction. Indicate the stereochemistry where appropriate. Н (ехcess) Lindlar catalyst starting alkyne Possible products: OH OH HO Product A Product B Product C Product D [ Select ] b). Choose the appropriate reagent(s) to obtain the hydrogenation product with trans-stereoconfiguration at C7-C8 double bond, nam vitamin A. [ Select ] c). How many degrees of unsaturation (HDI) is(are) in the product obtained by excessive (H2 is present in excess amount) hydrogenatic starting alkyne over palladium catalyst? [ Select ]

a). Fill in the box with the product(s) for the following reaction. Indicate the stereochemistry where appropriate. Н (ехcess) Lindlar catalyst starting alkyne Possible products: OH OH HO Product A Product B Product C Product D [ Select ] b). Choose the appropriate reagent(s) to obtain the hydrogenation product with trans-stereoconfiguration at C7-C8 double bond, nam vitamin A. [ Select ] c). How many degrees of unsaturation (HDI) is(are) in the product obtained by excessive (H2 is present in excess amount) hydrogenatic starting alkyne over palladium catalyst? [ Select ]

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter27: Biomolecules: Lipids

Section27.SE: Something Extra

Problem 47AP: Cembrene, C20H32, is a diterpenoid hydrocarbon isolated from pine resin. Cembrene has a UV...

See similar textbooks

Similar questions

Q3. For the following reactions, predict the products, mechanism and name all the products obtained Catalytic hydrogenation of cycloalkenes. Reduction of cyclohexanone with Zinc amalgam (Zn/Hg alloy) in concentrated hydrochloric acid Addition of CH2I2 in an alkene in the presence of Zn-Cu 2-hexene + chlorine gas Halogenation of cyclohexane in the presence of light and catalyst Sulfonation of Cyclobutane with oleum Addition of HBr to methylcyclopropane
Draw the organic products formed when cyclopentene is treated with each reagent. With some reagents, no reactionoccurs.a. H2 + Pd-Cb. H2 + Lindlar catalystc. Na, NH3d. CH3CO3He. [1] CH3CO3H; [2] H2O, HO–f. [1] OsO4 + NMO; [2] NaHSO3, H2Og. KMnO4, H2O, HO–h. [1] LiAlH4; [2] H2Oi. [1] O3; [2] CH3SCH3j. (CH3)3COOH, Ti[OCH(CH3)2]4, (–)-DETk. mCPBAl. Product in (k); then [1] LiAlH4; [2] H2O
The hydroboration–oxidation of internal alkynes produces ketones.(a) When hydroboration–oxidation is applied to but-2-yne, a single pure product isobtained. Determine the structure of this product, and show the intermediates in itsformation.
Cembrene, C20H32, is a diterpenoid hydrocarbon isolated from pine resin. Cembrene has a UV absorption at 245 nm, but dihydrocembrene (C20H34), the product of hydrogenation with 1 equivalent of H2, has no UV absorption. On exhaustive hydrogenation, 4 equivalents of H2 react, and octahydrocembrene, C20H40, is produced. On ozonolysis of cembrene, followed by treatment of the ozonide with zinc, four carbonylcontaining products are obtained: Propose a structure for cembrene that is consistent with its formation from geranylgeranyl diphosphate.
Does the data provide evidence for the claim that the reaction of Br2 with alkenes proceeds via anti‐addition? YES OR NOW AND WHY The mleting point of the product was found to be 234.5-235.5C chemical reaction: trans-stilbene+pyrimindine tribromide --->acetic acid 1,2-di bromo-1,2-diphenylethane product was trans-1,2-dibromo-1,2-diphenylethane
When 3-methyl-1-butene is reacted with 9-borabicyclo[3.3.1]nonane, the "1-ol" product is formed. What is the detailed reactin scheme for the transformation? Describe the purification procedure.
Fill in the missing reactants, reagents and products in the following reactions. Indicate stereochemistry if necessary. Unless otherwise specified, assume the reagents are in excess. PLease explaion with MUCH detail.
Write out all the isomers of the compound with molecular formula C4H10O . Select the normal/ primaryisomer and treat it with conc. H2SO4 and heat. Identify the reaction and give the product ‘A’ from it. 2. When ‘A’ is treated with HBr in the presence of a peroxide, give the name and structure of the product.
On the line drawn below, provide the systematic (IUPAC) name for the following structure. Besure to include stereochemistry (R/S, cis-trans, or E/Z) when appropriate. can you please explaing each step. Thank you I did it but does'nt look convinced for me. is hexa, 3-bromo, 5-methyl, 1-diene (R3,1)-3-bromo-5-methylhexane-1-diene?
Benzene is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by thecatalytic conversion of acetylene to benzene: 3C2 H2(g) ⇌ C6 H6(g). Which value of Kc would make this reactionmost useful commercially? Kc ≈ 0.01, Kc ≈ 1, or Kc ≈ 10. Explain your answer
Does the data provide evidence for the claim that the reaction of Br2 with alkenes proceeds via anti‐addition? The mleting point of the product was found to be 234.5-235.5C chemical reaction: trans-stilbene+pyrimindine tribromide --->acetic acid 1,2-di bromo-1,2-diphenylethane product was trans-1,2-dibromo-1,2-diphenylethane
Provide an acceptable name for each of the structures below, and/or draw a structure for each of the names below. Apply stereochemistry, including R/S, cis/trans, or E/Z, wherever necessary