Concept explainers
(a)
Interpretation:
The major elimination product obtained when the given alcohol is heated in the presence of sulphuric acid has to be has to be drawn.
Concept introduction:
Dehydration reaction:
Removal of water molecule from the reaction of alcohol with strong acid like sulfuric acid is known as dehydration reaction.
E1 dehydration reaction of secondary and tertiary alcohols:
The alcohols react with acids like hydrochloric acid or hydrobromic which yield the corresponding stable carbocation intermediate. The elimination of hydrogen from the beta carbon results in the
Carbocation: It is carbon ion that bears a positive charge on it.
The increasing stability order of carbocation is as follows,
Primary carbocation < secondary carbocation < tertiary carbocation
(b)
Interpretation:
The major elimination product obtained when the given alcohol is heated in the presence of sulphuric acid has to be has to be drawn.
Concept introduction:
Dehydration reaction:
Removal of water molecule from the reaction of alcohol with strong acid like sulfuric acid is known as dehydration reaction.
E1 dehydration reaction of secondary and tertiary alcohols:
The alcohols react with acids like hydrochloric acid or hydrobromic which yield the corresponding stable carbocation intermediate. The elimination of hydrogen from the beta carbon results in the alkene product. Thus the removal of water molecule occurs in the dehydration process and the major product of the acid-catalysed dehydration reaction will be the more substituted product.
Carbocation: It is carbon ion that bears a positive charge on it.
The increasing stability order of carbocation is as follows,
Primary carbocation < secondary carbocation < tertiary carbocation
(c)
Interpretation:
The major elimination product obtained when the given alcohol is heated in the presence of sulphuric acid has to be has to be drawn.
Concept introduction:
Dehydration reaction:
Removal of water molecule from the reaction of alcohol with strong acid like sulfuric acid is known as dehydration reaction.
E2 dehydration of primary alcohols:
Due to the unstability of the primary carbocation, the dehydration of primary alcohol is an E2 reaction.
In the E2 reaction, protonation of the most basic atom occurs and then base will remove a proton from the beta carbon.
(d)
Interpretation:
The major elimination product obtained when the given alcohol is heated in the presence of sulphuric acid has to be has to be drawn.
Concept introduction:
Dehydration reaction:
Removal of water molecule from the reaction of alcohol with strong acid like sulfuric acid is known as dehydration reaction.
E1 dehydration reaction of secondary and tertiary alcohols:
The alcohols react with acids like hydrochloric acid or hydrobromic which yield the corresponding stable carbocation intermediate. The elimination of hydrogen from the beta carbon results in the alkene product. Thus the removal of water molecule occurs in the dehydration process and the major product of the acid-catalysed dehydration reaction will be the more substituted product.
Carbocation: It is carbon ion that bears a positive charge on it.
The increasing stability order of carbocation is as follows,
Primary carbocation < secondary carbocation < tertiary carbocation
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
Essential Organic Chemistry, Global Edition
- Part A What is the major product formed when the following compound undergo an E1 reaction? CH, CH CH;CH,C–CHCH;CH3 Br for bonds ond chargee) Atoms gnd Terarrow_forwardDraw the two major organic products for the following reaction: CH OHarrow_forwardWhat reagents are needed to synthesize the following alcohols?arrow_forward
- Draw the major organic product of the following reaction. O OH NH2 X DCCarrow_forwardDraw the skeletal structures of all the final organic products formed when phenol (C6H-OH) is treated with the set of reagents given below: OH HNO₂ H₂SO4 1) Sn, HC1 2) dilute aq NaOH ?arrow_forwardThe compound shown is the principal component of vanilla bean extracts: H HO What is the IUPAC name of this compound? O 1-formyl-3-methoxyphenol O 3-formyl-2-methoxyphenol O 4-hydroxy-3-methoxybenzaldehyde O 1-hydroxy-2-methoxybenzaldehyde O None of these OCH 3arrow_forward
- Select the best method for carrying out the following synthesis: .COOH Br CH, 1. H,C-c-a/AICI, CH3 1. Br /FeBry 1. CH;CI/AICI, 1. KMNO, H, A 1. CH,CI/ AICI, 2. CH,CI/AICI, 2. Bry /FeBr 2. CH,CI/AICI, 2. KMNO H*, A 2. KMNO, H*, A 3. KMNO H", A 3 KMNO, H".A 3. Br, /FeBr, 3. Br/FeBr3 3. Br/FeBr, II III IV O IlI only O V only O Vonly O Il only O l onlyarrow_forwardWhat is the major organic product obtained from the following reaction? B OHarrow_forwardWhich of the following compounds will give a secondary alcohol when treated with Grignard reagent? A НСНО В C6H5COCH3 C6H5COC6H5 CH3CH2CH2CHOarrow_forward