Module 4: Structure and Nomenclature of Aromatic Compounds
Module 4: Structure and Nomenclature of Aromatic Compounds
Questions Q-108 – Q-135 | Study Sections S-26 – S-30
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📚 Study Section S-26
For monocyclic, aromatic hydrocarbons the names retained are:
Other substituted, monocyclic, aromatic hydrocarbons are named as derivatives of the above. For disubstituted, aromatic rings the terms o– (ortho) (1, 2 positions), m– (meta) (1, 3 positions), or p– (para) (1, 4 positions) are used. For more than two substitutions numbers are used.
If the substituent introduced into the compound is the same as one present, then the compound is named as a derivative of benzene.
Q-108
Draw the structure of p-chlorotoluene.
A-108
Q-109
Draw the structure of p-dibromobenzene.
A-109
Q-110
Draw the structure of o-cymene.
A-110
Q-111
Draw the structure of p-xylene.
A-111
📚 Study Section S-27
Univalent radicals are given names as listed below.
Q-112
Draw the structure of 3,5-dinitrochlorobenzene.
A-112
Q-113
Give the structure for diphenylacetylene.
A-113
C6H5–C≡C–C6H5
Q-114
Give the structure for 3-(m-tolyl)-1,4-hexadiene.
A-114
Q-115
Give the structure for trimesitylmethane.
A-115
Q-116
Give the structure for diphenyl.
A-116
Q-117
Give the structure for p-bromotoluene.
A-117
Q-118
Give the structure for 1,2,3,4-tetrabromobenzene.
A-118
📚 Study Section S-28
The following trivial names are retained:
Q-119
Give the structure of benzyl chloride.
A-119
C6H5–CH2–Cl
Q-120
Give the structure of benzyl alcohol.
A-120
C6H5–CH2–OH
Q-121
Give the structure of cinnamyl bromide.
A-121
Q-122
Give the structure of trityl chloride.
A-122
(C6H5)3C–Cl
📚 Study Section S-29
Hydrocarbons containing five or more fused benzene rings in straight linear arrangements are named from a numerical prefix followed by “acene”. The names retained are:
Q-123
Give a suitable name for:
A-123
2(or β)-methylnaphthalene Note: not 3-methylnaphthalene
Q-124
Give a suitable name for:
A-124
9,10-dimethylanthracene
Q-125
Give a suitable name for:
A-125
5,12-dimethylpentacene Note: not 7,12-dimethylpentacene — number so that substituents have the lowest possible numbers.
Q-126
Give a suitable name for:
A-126
1,5,12-trimethylnaphthacene
Q-127
Draw the structure of 2,6-di-s-butylnaphthalene.
A-127
Q-128
Draw the structure of 1,5-di-t-butylanthracene.
A-128
Q-129
Draw the structure of 1,5-dibromonaphthacene.
A-129
Q-130
Draw the structure of 2,8-dichlorohexacene.
A-130
📚 Study Section S-30
Other retained names are:
Q-131
Give the structure for 2-aminofluorene.
A-131
Q-132
Give the structure for 3-i-butylindene.
A-132
Q-133
Give the structure for 3,6-diethylphenanthrene.
A-133
Q-134
Give the structure for 9,9-dimethylfluorene.
A-134
Q-135
Give the structure for the final compound in this section.
A-135
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Module Complete!
You have completed Module 4: Structure and Nomenclature of Aromatic Compounds
