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(a)
Interpretation:
The name of the following alkene is to be determined.
Concept Introduction :
The
(a)
Answer to Problem 163AE
The name of the given alkene is 2 − methyl − 1 butene.
Explanation of Solution
The structure of the compound is given as follows:
From the above structure, it can be seen that there are four carbon atoms present in the principle chain of the compound and the atoms are bonded with double bond. Hence, the compound is known as alkene. The double bond of the structure is present at the position one that is the lowest possible number. The substituent methyl of the structure is present at second carbon (C2). Therefore, the name of the compound is 2 − methyl − 1 butene. The representation of the carbon position in a structure is given below −
(b)
Interpretation:
The name of the following alkene is to be determined.
Concept Introduction :
The unsaturated hydrocarbon is a group of hydrocarbons and also known as alkenes or alkynes. They are unsaturated because of the presence of triple or double bonds. Alkynes or hydrocarbons consist of at least one triple bond while alkenes consist of at least one carbon-carbon double bond in the main chain.
(b)
Answer to Problem 163AE
The name of the given alkenes is 2, 4 − dimethyl − 1, 4 − pentadiene.
Explanation of Solution
The structure of the given compound is −
From the above structure, it can be seen that there are five carbon atoms are present in the principle chain of the compound and the atoms are bonded with two double bonds. Hence, the compound is known as alkene. The double of the structure is present at the position one and position four and these are the lowest possible numbers. The methyl substituent of the structure is present at second carbon (C2) and third carbon (C3). Therefore, the name of the compound is 2, 4 − dimethyl − 1, 4 − pentadiene. The representation of the carbon position in a structure is given below −
(c)
Interpretation:
The name of the following alkene is to be determined
Concept Introduction :
The unsaturated hydrocarbon is a group of hydrocarbons and also known as alkenes or alkynes. They are unsaturated because of the presence of triple or double bonds. Alkynes or hydrocarbons consist of at least one triple bond while alkenes consist of at least one carbon-carbon double bond in the main chain.
(c)
Answer to Problem 163AE
The name of the given alkene is 6 − ethyl − 2 − methyl − 4 octene.
Explanation of Solution
The structure of the given compound is −
From the above structure, it can be seen that there are eight carbon atoms are present in the principle chain of the compound and there is a double bond in the main chain. Hence, the compound is known as alkene. The substituent ethyl is present at the sixth carbon (C6) atom and the substituent methyl is present at the second carbon atom (C2). Therefore, the name of the compound is 6 − ethyl − 2 − methyl − 4 octene. The representation of the carbon position in a structure is given below −
(d)
Interpretation:
The name of the following alkyne is to be determined.
Concept Introduction :
The unsaturated hydrocarbon is a group of hydrocarbons and also known as alkenes or alkynes. They are unsaturated because of the presence of triple or double bonds. Alkynes or hydrocarbons consist of at least one triple bond while alkenes consist of at least one carbon-carbon double bond in the main chain.
(d)
Answer to Problem 163AE
The name of the given alkyne is 3 − bromo-1-heptyne.
Explanation of Solution
The structure of the given compound is −
From the above structure, it can be seen that there are seven carbon atoms present in the principle chain of the compound and the atoms are bonded with triple bonds. Hence, the compound is known as alkyne. The triple bond of the structure is present at position one that is lowest possible number. The substituent bromine of the structure is present at third carbon (C3) position. Therefore, the name of the compound is 3 − bromo − 1 − heptyne. The representation of the carbon position in a structure is given below −
(e)
Interpretation:
The name of the following alkyne is to be determined
Concept Introduction :
The unsaturated hydrocarbon is a group of hydrocarbons and also known as alkenes or alkynes. They are unsaturated because of the presence of triple or double bonds. Alkynes or hydrocarbons consist of at least one triple bond while alkenes consist of at least one carbon-carbon double bond in the main chain.
(e)
Answer to Problem 163AE
The name of the given alkyne is 7 − chloro − 2, 5,5 − trimethyl − 3 − heptyne.
Explanation of Solution
The structure of the given compound is −
From the above structure, it can be seen that there are six carbon atoms are present in the principle chain of the compound and the atoms are bonded with triple bonds. Hence, the compound is known as alkynes. The triple bond of the structure is present at position three that is lowest possible number. The two methyl substituents of the structure are present at fifth carbon (C5) position and one methyl substituent is present at second carbon (C2) position. The other chlorine substituent is present at seventh carbon position (C7). Therefore, the name of the compound is 7 − chloro − 2, 5,5 − trimethyl − 3 − heptyne. The representation of the carbon position in a structure is given below −
(f)
Interpretation:
The name of the following alkyne is to be determined
Concept Introduction:
The unsaturated hydrocarbon is a group of hydrocarbons and also known as alkenes or alkynes. This structure is formed because of the presence of triple or double bonds. Alkynes or hydrocarbons consists at least triple bond while alkynes consist at least one carbon-carbon double bon in the main chain.
(f)
Answer to Problem 163AE
The name of the given alkyne is 4 − ethyl − 3 − methyl − 1 − octyne.
Explanation of Solution
The structure of the given compound is −
From the above structure, it can be seen that there are eight carbon atoms are present in the principle chain of the compound and the atoms are bonded with triple bonds. Hence, the compound is known as alkynes. The triple bond of the structure is present at position one that is lowest possible number. The methyl substituent of the structure is present at third carbon (C3) position and one ethyl substituent is present at fourth carbon (C4) position. Therefore, the name of the compound is 4 − ethyl − 3 − methyl − 1 − octyne. The representation of the carbon position in a structure is given below −
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Chapter 21 Solutions
Chemical Principles
- A student proposes the transformation below in one step of an organic synthesis. There may be one or more reactants missing from the left-hand side, but there are no products missing from the right-hand side. There may also be catalysts, small inorganic reagents, and other important reaction conditions missing from the arrow. • Is the student's transformation possible? If not, check the box under the drawing area. . If the student's transformation is possible, then complete the reaction by adding any missing reactants to the left-hand side, and adding required catalysts, inorganic reagents, or other important reaction conditions above and below the arrow. • You do not need to balance the reaction, but be sure every important organic reactant or product is shown. + T X O O лет-ле HO OH HO OH This transformation can't be done in one step.arrow_forwardDetermine the structures of the missing organic molecules in the following reaction: X+H₂O H* H+ Y OH OH Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. X Sarrow_forwardPredict the major products of this organic reaction. If there aren't any products, because nothing will happen, check the box under the drawing area instead. No reaction. HO. O :☐ + G Na O.H Click and drag to start drawing a structure. XS xs H₂Oarrow_forward
- What are the angles a and b in the actual molecule of which this is a Lewis structure? H H C H- a -H b H Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal groups may have slightly different sizes. a = b = 0 °arrow_forwardWhat are the angles a and b in the actual molecule of which this is a Lewis structure? :0: HCOH a Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal that might be caused by the fact that different electron groups may have slightly different sizes. a = 0 b=0° Sarrow_forwardDetermine the structures of the missing organic molecules in the following reaction: + H₂O +H OH O OH +H OH X Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structure of the missing organic molecule X. Click and drag to start drawing a structure.arrow_forward
- Identify the missing organic reactant in the following reaction: x + x O OH H* + ☑- X H+ O O Х Note: This chemical equation only focuses on the important organic molecules in the reaction. Additional inorganic or small-molecule reactants or products (like H₂O) are not shown. In the drawing area below, draw the skeletal ("line") structure of the missing organic reactant X. Click and drag to start drawing a structure. Carrow_forwardCH3O OH OH O hemiacetal O acetal O neither O 0 O hemiacetal acetal neither OH hemiacetal O acetal O neither CH2 O-CH2-CH3 CH3-C-OH O hemiacetal O acetal CH3-CH2-CH2-0-c-O-CH2-CH2-CH3 O neither HO-CH2 ? 000 Ar Barrow_forwardWhat would be the best choices for the missing reagents 1 and 3 in this synthesis? 1. PPh3 2 2. n-BuLi 3 Draw the missing reagents in the drawing area below. You can draw them in any arrangement you like. • Do not draw the missing reagent 2. If you draw 1 correctly, we'll know what it is. • Note: if one of your reagents needs to contain a halogen, use bromine. Explanation Check Click and drag to start drawing a structure.arrow_forward
- Predict the products of this organic reaction: NaBH3CN + NH2 ? H+ Click and drag to start drawing a structure. ×arrow_forwardPredict the organic products that form in the reaction below: + OH +H H+ ➤ ☑ X - Y Note: You may assume you have an excess of either reactant if the reaction requires more than one of those molecules to form the products. In the drawing area below, draw the skeletal ("line") structures of the missing organic products X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. Garrow_forwardPredict the organic products that form in the reaction below: OH H+ H+ + ☑ Y Note: You may assume you have an excess of either reactant if the reaction requires more than one of those molecules to form the products. In the drawing area below, draw the skeletal ("line") structures of the missing organic products X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. ✓ marrow_forward
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