Na, NH3H3C-C=C-CH3CH3H3C°Alkynes are reduced to trans alkenes by a process called dissolving metal reduction. The reaction uses sodium or lithium metal as the reducing agent and liquid ammonia as the solvent. Themethod is specific in the formation of trans alkenes from alkynes. The method involves two successive transfers of single electrons from the alkali metal to the triple bond, with abstraction ofprotons from the ammonia solvent.Draw curved arrows to show the movement of electrons in this step of the mechanism.Arrow-pushing Instructions.CH3 H-NH2CH3:NH2H3CH3C

Alkyne are treated with liq NH3 always gives trans alkene

Answered: Na, NH3 H3C-C=C-CH3 CH3 H3C Alkynes are…

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter21: Benzene And The Concept Of Aromaticity

Section: Chapter Questions

Problem 21.44P

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Organotin compounds play a significant role in diverse industrial applications. They have been used as plastic stabilizers and as pesticides or fungicides. One method used to prepare simple tetraalkylstannanes is the controlled direct reaction of liquid tin(IV) chloride with highly reactive trialkylaluminum compounds, such as liquid triethylaluminum (Al(CzHs)3). 3SnCl4 + 4Al(C2H5)3 → 3Sn(C2H5)4 + 4AlCl3 In one experiment, 0.160 L of SnCl4 (d= 2.226 g/mL) was treated with 0.346 L of triethylaluminum (Al(C2H5)3); d = 0.835 g/mL). What is the theoretical yield in this experiment (mass of tetraethylstannane, Sn(C2H5)4)? If 0.257L of tetraethylstannane (d= 1.187 g/mL) were actually isolated in this experiment, what was the percent yield?
(a) Cyclohexa-1,3-diene can be converted into a tetrasubstituted haloalkane when reacted with bromine in ether. Write a balanced chemical equation for the reaction that occurs and state the expected observation. (b) Compound A and B are alkenes with the same molecular formula C5H10. Compound A is a branched-chain alkene while compound B is a straight-chain alkene. The reaction between compound A with hydrogen bromide produces major product C which is optically active. (i) Draw TWO (2) possible structures for compound B. (ii) Outline the mechanism for the reaction between compound A with hydrogen bromide to form major product C. (iii) Name the product formed when compound A undergoes bromination reaction.
Help with the following ochem reaction scheme... Consider 3,4-dimethylpiperidine being subjected to the below reaction scheme: step 1) CH3I (excess) step 2) NaOH, heat step 3) CH3I (excess) step 4) NaOH, heat Provide the bond line structures for the major organic product obtained in each step and then discuss the regiochemistry for step 2.
Unsymmetrical alkene (1-butene) may be converted to Glycol by which of the following reactions options: Hydroboration in presence of hydrogen peroxide and NaOH Hydration in presence of acidic aqueous medium Oxidation with permangante Oxidation with Oxygen in presence of silver catalyst at 250 C and high pressure Ozonolysis in presence of Zinc and acidic medium
Organotin compounds play a significant role in diverse industrial applications. They have been used as plastic stabilizers and as pesticides or fungicides.One method used to prepare simple tetraalkylstannanes is the controlled direct reaction of liquid tin(IV) chloride with highly reactive trialkylaluminum compounds, such as liquid triethylaluminum (Al(C2H5)3). 3SnCl4 + 4Al(C2H5)3 3Sn(C2H5)4 + 4AlCl3 In one experiment, 0.230 L of SnCl4 (d = 2.226 g/mL) was treated with 0.396 L of triethylaluminum (Al(C2H5)3); d = 0.835 g/mL). If 0.335 L of tetraethylstannane (d = 1.187 g/mL) were actually isolated in this experiment, what was the percent yield?
Provide the E2 mechanism for β-elimination reactionemploying 2-chloro-2-methylbutane to prepare 2-methyl-2-butene and 2-methyl-1-butene reaction. Use the actual structures of thereactants and products. Explain which of the alkenes is the major product ofthis reaction ?
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