Concept explainers
Interpretation:
The structures for the major products from the given reactions are to be written along with stereoisomers if applicable.
Concept introduction:
Electrophiles are electron-deficient species, which has positive or partially positive charge. Lewis acids are electrophiles, which accept electron pair.
Nucleophiles are electron-rich species, which has negative or partially negative charge. Lewis bases are nucleophiles, which donate electron pair.
Substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a
Elimination reaction: A reaction in which two substituent groups are detached and a double bond is formed is called elimination reaction.
Addition reaction: It is the reaction in which unsaturated bonds are converted to saturated molecules by the addition of molecules.
Markovnikov’s rule: A nucleophile will attack the carbon having less number of hydrogens.
In
In alkenes, if the higher priority group on both the carbon is on the opposite side, configuration is termed as E-configuration.
Sodium amide is a strong base, which helps in the removal of terminal hydrogen of
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Organic Chemistry
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- Write the structure of the principal organic product formed in the reaction of 1-propanol with each of the following reagents:(a) Sulfuric acid (catalytic amount), heat at 140°C(b) Sulfuric acid (catalytic amount), heat at 200°C(c) Dimethyl sulfoxide (DMSO), oxalyl chloride [(COCl)2], triethylamine [N(CH2CH3)3](d) Pyridinium chlorochromate (PCC) in dichloromethane(e) Potassium dichromate (K2Cr2O7) in aqueous sulfuric acid, heat(f) Sodium amide (NaNH2)arrow_forward(c) A series of dialkyl ethers react with excess hydrogen bromide, with the following results. Analyze the ether in each case and write out the complete chemical equations. (1) Ether gives a mixture of bromocyclopentane and 1-bromoethane. (ii) Another ether gives one mole of 1,5-dibromopentane per mole of ether.arrow_forward(a) Give the products of the phosphoric acid-catalyzed dehydration of 2-methylcyclohex-3- enol. Label the three products with major, minor, and trace amounts. OH H3PO4, heat (b) Describe the rule that is applied in the acid-catalyzed dehydration of 2-methylcyclohex-3- enol. Explain your answer based on the products formed.arrow_forward
- (a) (b) (c) Suggest a synthesis of the following alkene (A) using a Wittig reaction strategy. Draw the starting material(s), key reagent and a full reaction mechanism including an explanation of the observed geometry. Which of the following (B) and (C) will favour the enol form? Briefly explain your reasoning. Predict the product(s) and provide a mechanism for each of the following transformations: (i) (ii) OMe OMe Base OEt NaOEtarrow_forward(i) Name, draw and describe the organic product of the reaction between 2-methylbut-1-ene and H2O in the presence of H2SO4 and provide a clear rationale as to why this is the major product of the reaction. (ii) The elimination reaction between 2-bromobutane and NaOCH2CH3 gives two organic products. Draw a mechanism for the reaction which produces the major organic elimination product and provide a rationale as to why that is the major product.arrow_forwardAcid catalyst dehydration of 3-methyl-2-pentanol gives a mixture of alkenes: (a) Write the chemical equation and draw the structures of all the product formed. Predict the major product. (b) (c) (d) (e) State the rule used to determine the major product. Outline the mechanism for the formation of major product. Suggest the suitable haloalkane and reagent used if the same major product is prepared via dehydrohalogenation.arrow_forward
- (a) Suggest a synthesis for the following molecules starting with benzene and any other necessary reagents. (i) H2N CI (ii) OH CN 6.arrow_forward11:43 Q1. (a) (c) (d) (b) Two stereoisomers of but-2-ene are formed when 2-bromobutane reacts with ethanolic potassium hydroxide. (i) Explain what is meant by the term stereoisomers. Library Name and outline a mechanism for the reaction of 2-bromo-2-methylpropane with ethanolic potassium hydroxide to form the alkene 2-methylpropene, (CH3)2C=CH₂ Name of mechanism Mechanism (ii) Draw the structures and give the names of the two stereoisomers of but-2-ene. Stereoisomer 1 Name (iii) Name this type of stereoisomerism. Select Name Stereoisomer 2 When 2-bromo-2-methylpropane reacts with aqueous potassium hydroxide, 2-methylpropan-2-ol is formed as shown by the following equation. CH3 H₂C-C-CH3 + KOH Br Page 2 of 14 CH3 H3C-C-CH3 + KBr ОН State the role of the hydroxide ions in this reaction. Write an equation for the reaction that occurs when CH3CH₂CH₂CH₂Br reacts with an excess of ammonia. Name the organic product of this reaction. Equation Name of product 9,284 Photos, 1,166 Videos For You…arrow_forward4) Aromatic compounds are among the most abundant and versatile in nature. From a synthetic point of view, these compounds, despite their stabilities, are quite useful and can undergo reactions under special conditions and by specific mechanisms, such as the Electrophilic Aromatic Substitution (SAE) and the Nucleophilic Aromatic Substitution (SNAr). Based on this, please answer the following items: (c) Provide the product and write a detailed mechanism for the following reaction. Justify your choice by this mechanism.arrow_forward
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