Solve all parts otherwise I will downvote Which of the following compounds arearomatic based on the principles of the Huckelrule of aromaticity?1234OHO D. Molecules 2 and 4O C. Molecules 1 and 4O E. Molecules 3 and 4.O B. Molecules 1 and 3O A. Molecules 1 and 2 What set of reagents can best accomplish thefollowing transformation?NHNH90%A) PCC in CH₂Cl₂D) H₂SO4, HNO3CH₂B) AICI 3-10%C) HCI in Et₂OE) Cl₂, FeCl3OCOAOEOBODPredict the major product from the reactionshown below.BDOMeOMeOMeAICH$.$-b- &O COBOAODOMe

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Which of the following compounds are aromatic based on the principles of the Huckel rule of aromaticity? 1 2 3 4 OH O D. Molecules 2 and 4 O C. Molecules 1 and 4 O E. Molecules 3 and 4 O B. Molecules 1 and 3 O A. Molecules 1 and 2

Which of the following compounds are aromatic based on the principles of the Huckel rule of aromaticity? 1 2 3 4 OH O D. Molecules 2 and 4 O C. Molecules 1 and 4 O E. Molecules 3 and 4 O B. Molecules 1 and 3 O A. Molecules 1 and 2

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 21.16P: Which of the molecules and ions given in Problem 21.15 are aromatic according to the Hckel criteria?...

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Concept explainers

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.

Question

Solve all parts otherwise I will downvote

Which of the following compounds are
aromatic based on the principles of the Huckel
rule of aromaticity?
1
2
3
4
OH
O D. Molecules 2 and 4
O C. Molecules 1 and 4
O E. Molecules 3 and 4.
O B. Molecules 1 and 3
O A. Molecules 1 and 2

What set of reagents can best accomplish the
following transformation?
NH
NH
90%
A) PCC in CH₂Cl₂
D) H₂SO4, HNO3
CH₂
B) AICI 3
-10%
C) HCI in Et₂O
E) Cl₂, FeCl3
OC
OA
OE
OB
OD
Predict the major product from the reaction
shown below.
B
D
OMe
OMe
OMe
AICH
$.$-b- &
O C
OB
OA
OD
OMe

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