Concept explainers
Interpretation: Step-wise synthesis of
Concept introduction:
Radical halogenation is a substitution reaction in which hydrogen atoms of
One problem with alkane halogenations is that multiple substitutions occur unless an excess of alkane is used.
At normal temperature and pressure, chlorine and methane do not react with each other. The reaction is initiated by light or heat. If they are exposed to light,
The reaction that is initiated by light is more efficient because a very small amount of photons allows a large number of products to form.
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Organic Chemistry
- M5.arrow_forwardPractice Problem 13.37a Draw the major organic product of the following reaction sequence. 1) RCO3H 2) MeMgBr 3) H20arrow_forward(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane 2. After a brief discussion with each other, Tsomane proposed Method A to synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that started from hydroxymethylcyclohexane 3. Each student believed that their proposed method is better than the other. (Scheme below) (1) 1 Ph THF A Ph Ph B H₂SO4 100 °C 3 OH What is the name of the reaction that is followed by reaction Method A?arrow_forward
- 2B Suggest a short synthetic route for the preparation of compound D from compound C OH Br COOH C D Note: Apart from compound C, you can also use organic reagents with up to 1 C atom. The number of arrows in the figure above does not necessarily correspond to the number of steps.arrow_forwardGive explanation of the correct option and explanation of the incorrect options.arrow_forwardDraw the structural formula(s) for the major product(s) of each of the following reactions. Unless required, ignore stereochemical details.arrow_forward
- (c) (b) 10:43 M -4- 21% QUESTION 4 Propose the mechanism for each of the following reactions. Show all intermediates and use the correct arrow formalism for the flow of electrons. Give all important resonance structures. Do not use generic "R" groups in your examples. [30] (a) An example for the so called Darzens reaction is the base catalyzed reaction of ethylchloro acetate with cyclohexanone to give the epoxy ester shown. The first step is a carbonyl condensation reaction, and the second step is an SN2 reaction. (5) ||| Eto OEt OEt ° 요 OH -5- 1. NaOEt, EtOH 2. BrCH2(CH2)2CH2Br 3. H3O+, heat OEt NaOEt HOEt محمد (8) OH (6)arrow_forwardA reasonable synthesis for each of the following compoundsarrow_forward10.47 (•) Suggest a method for synthesizing the following alkynes using an alkyne and an alkyl halide. [There are two correct answers for each product.] (a) Pharrow_forward
- Predict the major organic product of each of the following reactions or provide the reagent needed to complete each transformation.arrow_forward(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane 2. After a brief discussion with each other, Tsomane proposed Method A to synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that started from hydroxymethylcyclohexane 3. Each student believed that their proposed method is better than the other. (Scheme below) (1) Ph Ph 8*8 Ph THF A 1 Santande B H₂SO4 100 °C 3 OH Using curly arrows, provide full mechanistic details accounting how methylenecyclohexane 2 was synthesised according to both Methods A and B.arrow_forward(b) Outline, using suitable mechanisms, how the following conversion may be brought about. You should indicate the reagents to be used and any intermediate compounds that may be formed. Each arrow may represent one or more than one step. P(C6H5)3 HC 8-6-30 CH₂Br HC H CH3arrow_forward
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