14-22 In light of your answer to Problem 14-21 propose mechanisms for the reactions below. (a) CO2CH3 .CO2CH3 Heat II + CO2 `CO2CH3 ČO2CH3 (b) CH3 CH3 N' N: Heat N' C=CH + N2 N. CH3 CH3 z=Z

Q: None

A: The reaction sequence shown in the image involves the formation of products from a diketone compound…

Q: Propose a synthesis for the following reactions. OH NO₂ NO₂

A: 1. Given that, the transformations are shown below We have to carry out the above synthesis.…

Q: Draw the structures of the intermediate bromonium and cyclic carbocation and propose mechanisms for…

A: Solution- The structures of the intermediate bromonium and cyclic carbocation is shown as follows:

Q: Ph Ph A H Ph H Ph Ph Ph B OH Me Me Ph HBr / H₂O Ph Br C Me Ph ? Ph D Br Me Ph Ph E H

A: We know E1 reaction involves first removal of leaving group followed by removal of H- .

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Q: EtO₂C. H₂N 3 O O₂N IZ N 6 Me -N N (i) (MeO)₂SO₂ HO₂C (ii) NaOH/H₂O (i) SOCI2 (ii) NH₂OH HO₂C O₂N 4 5…

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Q: From compounds of 4 carbons or less and any reagents you want; synthesize the following compound.

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Q: Predict the products of the following reactions.

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Q: CH3 CH3 BF3, H₂O

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Q: 7A. Show the sequence of reagents needed to accomplish the synthesis shown below. H,C- H,C-CEC-H CH,

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Q: OH KCN H3C° HO, H3C КОН CEN H2O ОН

A: Applying concept of epoxide ring opening in the presence of base.

Q: g) H3C новон CH3 H2C CH3 ОН LDA -78°C H3C- H3C- Д CrO₂ H₂SO4 H3C H3C NH

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Q: Propose a reasonable mechanism for the following reactions: H+, H₂O OH HBr OH isto T

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Q: H;C H3C `OCH; CH3 CH3

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Q: a) Br HO но ? H20 04150 b) CH3CH,Br CN c) CH3CH,CI H20 ?

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Q: reagents

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Q: 7. Propose a mechanism for the following transformation. EtO,C. CO,Et + NH3 OEt H.

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Q: O Provide a mechanism for the transformation below. NH Me Me NH4CI NaNCBH3 2 3 Me

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Q: 1. CH3-CH2-0 (d) 2 CH3-CH2-c-o-CH2-CH3 2. HCI (е) Δ CHз —с—сн2 —с—он ОН (f) + Br2

A: Given  data :-

Q: The following sequence of steps converts (R)-2-octanol to (S)-2-octanol. ОН ОН p-TSCI CH,COO Na+ A…

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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.