Draw the structures of the starting materials needed to make 2-methylhept-3-yne in the spaces provided. The...
Draw the structures of the starting materials needed to make 2-methylhept-3-yne in the spaces provided. The starting materials may be any bromoalkane having five carbons or fewer.
a) The starting hydrocarbon must be a bromoalkane with five carbons or fewer.
b) The hydrocarbon must be a bromoalkane with five carbons or fewer.
Homework Answers
This problem is based on the concept of dehydrohalogenation of dihaloalkanes.
Dehydrohalogenation of dihaloalkanes refers to the removal of hydrogen hallide to form an alkyne in presence of strong base. It is a type of elimination reaction as it involves the removal of hydrogen hallides.
A geminal or vicinal dihaloalkane on double dehydrohalogenation in presence of a strong base results in the formation of an alkyne. The first dehydrohalogenation is a fast reaction that results in the formation of vinyl halide. The further dehydrohalogenation is a rather slow process that results in the formation of alkyne.
(a)
The chemical reaction starting from the reactant to the desired product.
(b)
The resultant alkyne undergoes a deprotonation reaction with sodamide
.
Therefore, the structure of the reactant A is as follows:
Therefore, the structure of the reactant B is as follows:
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Draw the structures of the starting materials needed to make
2-methylhept-3-yne in the spaces provided. The...
Draw the structures of the starting materials needed to make 2-methylhept-3-yne in the spaces provided. The...
Draw the structures of the starting materials needed to make
2-methylhept-3-yne in the spaces provided. The starting materials
may be any bromoalkane having five carbons or fewer.
Draw the structure of the starting material needed to make 2-methylhept-3-yne using sodium amide in liquid...
Draw the structure of the starting material needed to make 2-methylhept-3-yne using sodium amide in liquid ammonia, followed by 1-bromopropane. The starting hydrocarbon must have no more than five carbons. 1) NaNH2, NH3(l) 2) CH3CH2CH2Br + NaBr
Draw the structure of the starting material needed to make 2-methylhept-3-yne using sodium amide in liquid...
Draw the structure of the starting material needed to make
2-methylhept-3-yne using sodium amide in liquid ammonia, followed
by 1-bromopropane.
Draw the structures of the starting materials used to synthesize 3-methylbutyl acetate. (Draw the structures in...
Draw the structures of the starting materials used to synthesize 3-methylbutyl acetate. (Draw the structures in the single sketchpad shown. Draw only the structures - do not include a plus sign.)
1.) Draw the structures of 3 ethers with formula C4H10O. 2. Draw the compound with the...
1.) Draw the structures of 3 ethers with formula C4H10O. 2. Draw the compound with the fewest carbons that fits the description: a primary alcohol. 3. Draw the structure of an alkane that has 6 or fewer carbons and 4 secondary carbons..
2. Draw, in the provided spaces/ boxes, the major organic products of the following transformations. Be...
2. Draw, in the provided spaces/ boxes, the major organic products of the following transformations. Be sure to indicate appropriate stereochemistry. If the reaction generates enantiomers, draw one and write tenantiomer' 1. Cl2, H20 2. NaOH На Pd/C 1.Hg(OAc)2 CH,OH 2. NABH 1. CH CO H 2. Hао* Н,с" HC @) 1. ВНа, THF 2. H202, NaOH Br2 CH2CI2 (E)-5-methylhept-3-ene MeOH conc'd H3PO4 ОН Br NAOCH3
3. Draw the structures of each of the following molecules and then provide the reagents needed...
3. Draw the structures of each of the following molecules and then provide the reagents needed to convert each of the given starting materials into the required pro a) dimethyl sulfide dimethyl sulfoxide b) phenol methyl phenyl ether c) dimethyl ketone 2-propanol ㅡㅡ
3. Draw the appropriate starting materials and indicate the appropriate reaction conditions needed that you would...
3. Draw the appropriate starting materials and indicate the appropriate reaction conditions needed that you would need in order to make the ester shown below. There is more than one correct answer. (5 pts) 4. Show reagents for the reactions below: (2 pts each, 6 pts total) OH CO,
2. Design multi-step syntheses for TWO of the following targets. Show the reagents needed for each...
2. Design multi-step syntheses for TWO of the following targets. Show the reagents needed for each step and the product of each step. Special conditions: You must use cyclopentadiene as your starting material for all syntheses. You may use organic reagents containing 4 or fewer carbons, and any inorganic reagents. For any Diels-Alder reaction that you use (necessary for all targets!), the dienophile must be an a,ß-unsaturated carbonyl compound. Target 1: HO D Target 2: Doe Target 3: ro Target...
4. Draw structures for the following compounds (12 points): a. 6,6-dimethylhept-2-yne b. 5-amino-4-methoxyhept-6-yn-2-o...
4. Draw structures for the following compounds (12 points): a. 6,6-dimethylhept-2-yne b. 5-amino-4-methoxyhept-6-yn-2-ol c. 4-bromo-4-methyl-2-cyclohexenol d. (S)-2-chlorohexane e. (2S,3S)-2,3-butanediol f. (R)-3-bromocyclopentene
Draw the structures of the starting materials needed to make
2-methylhept-3-yne in the spaces provided. The starting materials
may be any bromoalkane having five carbons or fewer.
Draw the structure of the starting material needed to make 2-methylhept-3-yne using sodium amide in liquid ammonia, followed by 1-bromopropane. The starting hydrocarbon must have no more than five carbons. 1) NaNH2, NH3(l) 2) CH3CH2CH2Br + NaBr
Draw the structure of the starting material needed to make
2-methylhept-3-yne using sodium amide in liquid ammonia, followed
by 1-bromopropane.
Draw the structures of the starting materials used to synthesize 3-methylbutyl acetate. (Draw the structures in the single sketchpad shown. Draw only the structures - do not include a plus sign.)
2. Draw, in the provided spaces/ boxes, the major organic products of the following transformations. Be sure to indicate appropriate stereochemistry. If the reaction generates enantiomers, draw one and write tenantiomer' 1. Cl2, H20 2. NaOH На Pd/C 1.Hg(OAc)2 CH,OH 2. NABH 1. CH CO H 2. Hао* Н,с" HC @) 1. ВНа, THF 2. H202, NaOH Br2 CH2CI2 (E)-5-methylhept-3-ene MeOH conc'd H3PO4 ОН Br NAOCH3
3. Draw the structures of each of the following molecules and then provide the reagents needed to convert each of the given starting materials into the required pro a) dimethyl sulfide dimethyl sulfoxide b) phenol methyl phenyl ether c) dimethyl ketone 2-propanol ㅡㅡ
3. Draw the appropriate starting materials and indicate the appropriate reaction conditions needed that you would need in order to make the ester shown below. There is more than one correct answer. (5 pts) 4. Show reagents for the reactions below: (2 pts each, 6 pts total) OH CO,
2. Design multi-step syntheses for TWO of the following targets. Show the reagents needed for each step and the product of each step. Special conditions: You must use cyclopentadiene as your starting material for all syntheses. You may use organic reagents containing 4 or fewer carbons, and any inorganic reagents. For any Diels-Alder reaction that you use (necessary for all targets!), the dienophile must be an a,ß-unsaturated carbonyl compound. Target 1: HO D Target 2: Doe Target 3: ro Target...
4. Draw structures for the following compounds (12 points): a. 6,6-dimethylhept-2-yne b. 5-amino-4-methoxyhept-6-yn-2-ol c. 4-bromo-4-methyl-2-cyclohexenol d. (S)-2-chlorohexane e. (2S,3S)-2,3-butanediol f. (R)-3-bromocyclopentene
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