Concept explainers
Interpretation:
The reactants of the given reactions are to be deduced.
Concept introduction:
The Grignard reagent or RMgX is a reagent that can be prepared from an alkyl halide and magnesium in the ether. It adds on the alkyl group to the carbonyl moiety and converts the
Wittig reagent or alkyl phosphonium ylide, in presence of base, reacts with carbonyl to form an alkene.
Alcohols can be converted to ethers by the reaction of an alkyl halide with sodium hydride.
Alcohols can be converted to
Alkyl halides react with potassium cyanide to form nitriles.
Carbonyl compound reacts with hydrazine and KOH to form
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EBK ORGANIC CHEMISTRY
- Provide concise syntheses for each of the following compounds starting from but-1 - ene. The source of all the carbon atoms in these molecules must be either but-1 - ene or any one carbon nucleophile/electrophile. (If you must use a reagent that has more than one carbon atoms you must show the preparation of that reagent from but-1 - ene.) (a) Methyl propanoate (b) 3, 5- Dimethylheptan-4-one (c) 5-ethyl-7-methylnon-4-enearrow_forwardAnswer ALL parts of this question. (a) Compound Z is a tertiary aromatic amine with the formula, C8H11N. Provide a chemical structure for compound Z. (b) Provide a reaction scheme for the preparation of nitrous acid. (c) Draw the structure of the product formed exclusively when nitrous acid reacts with Z. (d) Give a curly arrow mechanism for the preparation of the yellow azo-dye from the reaction of Z with benzenediazonium chloride.arrow_forwardStarting with 2-methylpropene, outline a synthesis of (a) (CH3)3COH (b) (CH3)2C(OH)CH2Brarrow_forward
- Draw a structural formula for the alcohol formed by treating each alkene with borane in tetrahydrofuran (THF) followed by hydrogen peroxide in aqueous sodium hydroxide, and specify stereochemistry where appropriate. (a) (d) (b) (e) (c)arrow_forwardDraw the structural formula(s) for the major product(s) of each of the following reactions. Unless required, ignore stereochemical details.arrow_forwardGuiding your reasoning by retrosynthetic analysis, show how you could prepare each of the following compounds from the given starting material and any necessary organic or inorganic reagents. All require more than one synthetic step. (a) Cyclopentyl iodide from cyclopentane (b) 1-Bromo-2-methylpropane from 2-bromo-2-methylpropane (c) meso-2,3-Dibromobutane from 2-butyne (d) 1-Heptene from 1-bromopentane (e) cis-2-Hexene from 1,2-dibromopentane (f) Butyl methyl ether (CH3CH2CH2CH2OCH3) from 1-butenearrow_forward
- 9. (a) Provide the reagent necessary to carry out the following chemical transformations. (1) (ii)arrow_forward(b) A student wanted to synthesize methyl tert-butyl ether. He attempted the synthesis by adding sodium methoxide to tert-butyl chloride, but he obtained none of the desired product (1) (ii) Use an equation to show the product formed in this reaction Propose a suitable William ether synthetic route for methyl tert-butyl ether tach l.arrow_forwardApply retrosynthetic analysis to guide the preparation of each of the following compounds from the indicated starting material, then write out the synthesis showing the necessary reagents. (a) 1-Propanol from 2-propanol (b) 1,2-Dibromopropane from 2-bromopropane (c) 1-Bromo-2-propanol from 2-propanol (d) 1-Bromo-2-methyl-2-propanol from tert-butyl bromide (e) 1,2-Epoxypropane from 2-propanol (f) tert-Butyl alcohol from isobutyl alcohol (g) tert-Butyl iodide from isobutyl iodide (h) trans-2-Chlorocyclohexanol from cyclohexyl chloridearrow_forward
- Suggest the most appropriate method for each of the following laboratory syntheses.(a) cyclopentanol ¡ cyclopentanonearrow_forward(a) Explain why an alkylamine is more basic than ammonia?(b) How would you convert(i) Aniline to nitrobenzene (ii) Aniline to iodobenzenearrow_forward2B 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_forward
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