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Q: CH3 H3C CH3 (e) H2C=CHCHCCH3 CH3 (B) CH3CH2CH=CCH2CH3 CH3CHCH,CH3 (h) CH3CH2CH2CH=CHCHCH2CH3 CH3 CH3…
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Q: 6. a. Draw both chair conformations for trans-1,2-dichlorocyclohexane. Label all unfavorable…
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- CH3 HCI CH3 CH3 CH3-CH-OH ZnCl, CH3-CH-CI CH3-C=0 BCD DCB BCD DCB3. Rank the substituents in each of the following sets: (а) -Н, -ОН, -СH2CH3, -СH2CH2ОН (b) -СО2Н, -СО2CH3, -СH2ОН, -он (c) –CN, –CH2NH2, -CH2NHCH3, –NH2 (d) –SH, -CH2SCH3, –CH3, -SSCH3Assign priorities to the groups in each set. Q.) -CH2OH and -CH2CH2OH
- 2. Assign E or Z configuration to each of the following alkenes: (b) HO2C (a) HOCH2 CH3 C=C CI OCH3 H3C CH3 {d} CH3O2C CH=CH2 (c) NC C=C HO2C CH2CH3 CH3CH2 CH2OHDraw each of the following. (a) Draw a Newman Projection of the following molecule, looking down the C3-C4 bond. Draw C3 in the front. CI Br H (b) Draw a Newman Projection of the most stable and the least stable conformation of the following molecule. Label each H H. CI H CI HIncreased substitution around a bond leads to increased strain. Take the four substituted butanes listed below, for example. For each compound, sight along C2-C3 bond and draw Newman projections of the most and least stable conformations. (a) 2-Methylbutane (b) 2,3-Dimethylbutane (a) 2,2-dimethylbutane (c) 2,2,3-Trimethylbutane
- (a) (b) 1. CH3MgBr 2. H3O+ H3C OH I H3C-C-C-CH3 H3C H ОН H CH3 CH3 H3C CH3 H3C H₂SO4 C=C(a) Draw all stereoisomers formed by monobromination of the cis and trans isomers of 1,2-dimethylcyclohexane drawn below. (b) How do the products formed from each reactant compare-identical compounds, stereoisomers, or constitutional isomers? cis-1,2-dimethylcyclohexane trans-(1R.2S)-dimethylcyclohexane0 || CH,-O-C-(CH2)2 – CH3 O || CH-O - C - (CH2), – (CH = CH – CH2)2 – (CH2)3 – CH3 O || CH,- O-C-(CH2)8 – CH3 - 3 KOH
- CH3 H3C N- -CH2 H2C CH2 H3C (1) CH3 CH3 CH3 H2 Br CH3 CH2 ČH3 (2) CH HC CH CHDraw both cis- and trans-1,4-dimethylcyclohexane in their more stable chairconformations. (a) How many stereoisomers are there of cis-1,4-dimethylcyclohexane, and how many of trans-1,4-dimethylcyclohexane? (b) Are any of the structures chiral? (c) What are the stereochemical relationships among the various stereoisomers of 1,4-dimethylcyclohexane?In each of the following sets, which structures represent the same com- pound and which represent different compounds? (a) Br CH3 CH3 CH3CHCHCH3 CH3CHCHCH3 CH3CHCHCH3 CH3 Br Br (b) но. но. HO HO но (c) CH3 CH2CH3 CH3 CH3 CH3CH2CHCH2CHCH3 HOCH2CHCH2CHCH3 CH3CH2CHCH,CHCH2OH CH2OH CH3