What is the major organic product of the following Grignard reaction? ominat CH2CH3 + CH3MgBr McBr C OH CH₂CH3 (1) diethyl ether (2) H3O CH3 OMgBr CH 3 of ot -OH CH 3 CH₂CH3 CH₂CH3
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- The reaction H2C=CHCH2Br + NaN3 followed by reaction with LiAlH4 yields CH3CH2CH2NH2 H2C=CHCH2NH2 H2C=CHCH2N3 none of the aboveReaction of (CH3)3CCHO with (C6H5)3P=C(CH3)OCH3, followed by treatment with aqueous acid, affords R (C7H14O). R has a strong absorption in its IR spectrum at 1717 cm−1 and three singlets in its 1H NMR spectrum at 1.02 (9 H), 2.13 (3 H), and 2.33 (2 H) ppm. What is the structure of R? We will learn about this reaction in Chapter 18.Explain the following observation. Ethyl 3-phenylpropanoate (C6H5CH2CH2CO2CH2CH3) reacts with electrophiles to afford ortho- and para-disubstituted arenes, but ethyl 3-phenylprop-2-enoate (C6H5CH= CHCO2CH2CH3) reacts with electrophiles to afford meta-disubstituted arenes.
- Explain how the reaction of (CH3)2CHCH(Cl)CH3 with H2O yields two substitutionproducts, (CH3)2CHCH(OH)CH3 and (CH3)2C(OH)CH2CH3Provide a reasonable arrow-pushing mechanism for Reaction 5b, and explain the the stereochemical outcome. 5d belowWhich of the following statements about terminal alkynes is FALSE?I I. A geminal dihalide is produced by the hydrohalogenation reaction.II. The proton in the terminal carbon is acidic but just slightly.III.They create an aldehyde when they react with H2O, H2SO4, and HgSO4.IV. A silver acetylide is formed after treatment with alcoholic AgNO3.
- Give the major organic product(s) of the following reactions (a-e).What is the major organic product of the SN1SN1 reaction shown? (CH3)2CHCH(OH)CH2CH2CH3+HBr⟶(CH3)2CHCH(OH)CH2CH2CH3+HBr⟶ The product is: a. CH3CHBrCH(CH3)CH2CH2CH3CH3CHBrCH(CH3)CH2CH2CH3 b. (CH3)2CHCH2CHBrCH2CH3(CH3)2CHCH2CHBrCH2CH3 c. (CH3)2CBrCH2CH2CH2CH3(CH3)2CBrCH2CH2CH2CH3 d. (CH3)2CHCHBrCH2CH2CH3What steps are needed to prepare phenylacetylene, C6H5C = CH, from each compound: (a) C6H5CH2CHBr2; (b) C6H5CHBrCH3; (c) C6H5CH2CH2OH?
- Devise a synthesis of the ketone hexan-3-one, CH3CH2COCH2CH2CH3, from CH3CH2Br as the only organic starting material; that is, all the carbon atoms in hexan-3-one must come from CH3CH2Br. You may use any other neededreagents.Draw the major organic product for the reaction of 1-phenylpropan-1-one with sodium hydride followed by ethyl iodide. Ignore stereochemistry.Rank the following in increasing order of reactivity towards nucleophilic acyl substitutiona. CH3COCl, CH3COOCH3, CH3CONH2b. CH3COOCH3, CH3COOCH2CCl3, CH3COOCH(CF)3