Choose which enantiomer of diethyl tartrate is used to prepare the epoxides shown using a Sharpless epoxidation. (a) H₂CH₂C CH₂ (b) 0 Subr OH (-)-diethyl taratev (+)-diethyl tartrate (-)-diethyl tartrate ry Entire Group remain G [References
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- Provide the structure of the major product(s) of the followings organic reactions: a) b) c) d) e) f) h) -CEC -CECH -CECH -CECH Na CH3CH₂-CEC-CH3 -CECH NaNH, H₂ Lindlar's catalyst Na NH3 HBr (1 equivalent) HgSO4 H₂SO4, H₂O Sia₂BH H₂O₂ он 1) 0₂ 2) H₂O Br H30Identify the following compound from its IR and proton NMR spectra. C,H1,0: 'H NMR 8 3.31 (3H, s); 8 2.41 (1H, s); & 1.43 (6H, s) IR: 2110, 3300 cm- (sharp)Identify the reagents represented by the letters a-e in the following scheme:
- Identify the reagents a-c in the following scheme:Complete the following reactions by giving appropriate reagents: Zn(Hg) (1)? AICI HCI HNO₂ CI H₂SO4 (3)? (4)? NO₂ (2)?Which of the following stauctures ase epoxides: 2 3 Q) 3 and 4 b) 2 and 3 C) 2, 3 and 4 C) , 2,3 and 4 The JUPAC name of the following compound s: O4 a) (S)-1-tert-butylprop-1-0I b) (5)-2,2-Rmethyl pent-3-01 C) (A)-2,2-imethylpent-3-01 d) LA)-,4-dimethylpent- 3-0l
- 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.Which of the following are a major product of the reaction sequence shown belo (1) Br2, FeBr3 (2) Mg/ether он он (A) (B) (3) (4) dil H* /H;O (C) (D) он Compound C Compounds B and D OCompounds A and B Compound DPropose the reagents in best order for the synthesis of the following compound from benzene. CI A) B) 1) CH3CH2Cl, AlCl3 2) Cl₂, AlCl3 3) CH3COCI, AlCl3 1) CH3CH2Cl, AlCl3 2) CH3COCI, AlCl3 3) Cl₂, AlCl3 D) 1) CH3CH2Cl, AlCl3 2) Fuming H₂SO4 2) Cl₂, AlCl3 3) CH3COCI, AlCl3 4) Dilute H2SO4 E) C) 1) CH3COCI, AlCl3 2) Zn(Hg), HCl, Heat 3) Fuming H2SO4 4) Cl₂, AlCl3 5) Dilute H2SO4 1) CH3COCI, AlCl3 2) Cl₂, AlCl3 3) CH3CH2Cl, AlCl3 4) Zn(Hg), HCl, Heat
- Reaction of p-cresol with two equivalents of 2-methylprop-1-ene affordsBHT, a preservative with molecular formula C15H24O. BHT gives thefollowing 1H NMR spectral data: 1.4 (singlet, 18 H), 2.27 (singlet, 3 H), 5.0(singlet, 1 H), and 7.0 (singlet, 2 H) ppm. What is the structure of BHT?Draw a stepwise mechanism illustrating how it is formed.4G. 4G 7:41 PM 27 4. Draw structures corresponding to the following names: (a) 2,2-Dimethylpropanoyl chloride (c) 5,5-Dimethylhexanenitrile (e) trans-2-Methylcyclohexanecarboxamide (f p-Methylbenzoic anhydride (b) N-Methylbenzamide (d) tert-Butyl butanoate18.26 Predict the products of the following ether cleavage reactions: LOCH CH3 OC(CH3)3 (a) HI CF3CO,H, ? (b) H2O HI HI (c) Н,С— СНОСH,CH, (d) (CH3);CCH,OCH,CH3 H20 H2O