Concept explainers
Interpretation:
The product that is expected for the given reaction has to be drawn.
Concept Introduction:
Hydrogenation reaction is one of the reactions that alkynes undergo. Addition of hydrogen is the hydrogenation reaction. This can be accomplished by using hydrogen molecule and metal catalyst. Hydrogenation reaction is also known as reduction reaction.
When an alkyne undergoes hydrogenation reaction with hydrogen and catalyst such as platinum, the final product obtained will be
Under the above conditions, the alkene cannot be isolated. This is because the alkene is more reactive than the alkyne towards hydrogenation.
If the alkene has to be obtained from alkyne means, then a partially deactivated catalyst like Lindlar’s catalyst or sodium in liquid ammonia can be used. Partially deactivated catalyst is known as poisoned catalyst. When the alkyne is reduced using Lindlar’s catalyst, the alkene product obtained will be having cis configuration. If the alkyne is reduced using sodium in liquid ammonia means the alkene obtained will be having trans configuration.

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Chapter 12 Solutions
ORGANIC CHEMISTRY-NEXTGEN+BOX (1 SEM.)
- Predict the major products of the following organic reaction: + Δ A ? Some important notes: • Draw the major product, or products, of the reaction in the drawing area below. • If there aren't any products, because no reaction will take place, check the box below the drawing area instead. • Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers. Explanation Check Click and drag to start drawing a structure. 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use Privaarrow_forwardesc 2 Incorrect Feedback: Your answer is incorrect. Can the molecule on the right-hand side of this organic reaction be made in good yield from no more than two reactants, in one step, by moderately heating the reactants? ? A O • If your answer is yes, then draw the reactant or reactants in the drawing area below. You can draw the reactants in any arrangement you like. . If your answer is no, check the box under the drawing area instead. Check F1 ! @ X C Save For Later Submit Assignment 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 80 et A ད 1 4 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 # $ 45 % A 6 87 & * 8 9 ) 0 + ||arrow_forwardCan the molecule on the right-hand side of this organic reaction be made in good yield from no more than two reactants, in one step, by moderately heating the reactants? ?A Δ O • If your answer is yes, then draw the reactant or reactants in the drawing area below. You can draw the reactants in any arrangement you like. • If your answer is no, check the box under the drawing area instead. Explanation Check Click and drag to start drawing a structure. 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibilit ku F11arrow_forward
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- [Review Topics] [References] Write an acceptable IUPAC name for the compound below. (Only systematic names, not common names are accepted by this question.) Keep the information page open for feedback reference. The IUPAC name is Submit Answer Retry Entire Group 9 more group attempts remainingarrow_forwardPlease draw.arrow_forwardA chromatogram with ideal Gaussian bands has tR = 9.0 minutes and w1/2 = 2.0 minutes. Find the number of theoretical plates that are present, and calculate the height of each theoretical plate if the column is 10 centimeters long.arrow_forward
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