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- Chemistry II How many optical isomers, if any, are possible for the following compounds? 39. CHз —СН—CН—С ОН il Br CH3 O 40. СH—СН—CH -С ОН CH3 Br 41. CH—CH-—СН—СH—С 42. CH-CH2—СH -CH-CH} OH ОН ОН Он Br 43. CH3-CH -CH-С 44. C-CH2-CH CH-C CH3 NH2 CH3 OHWhich of the following compounds has both geometrical (cis/trans) and optical isomers (mirror image to one and another)? O a. CH3CHCICH=CHCH3 CH2(OH)CH=CHCH3 C6H5CH=CHNH2 d. C2H5CH=CH28c) What is the relation between the following pairs H₂C O a. Cis-Trans O b. Structural O c. not isomers O d. Identical H3C CH3 H₂CH.
- Which of the following is the major product of the reaction shown below? NaSH DMSO = (CH3)2SO %3D Br DMSO8. Draw a non-cyclic isomer of C3H6N2 in which the atom connectivity is N-C-C–C-N, and the middle C–C–C unit does NOT have a bond angle of 180°.9. Draw the formula structure for A to I. A CH3CH2OH / OH CH;CHO Ca(a) KCN CH3COOH F CH,CI CH,CH,OH/ H+ thionyl chloride, pyridine CH3ČNH2 D CH,MgBr
- Part A What is the relationship between the following molecules? CH,CH3 CH3 CH2 CHCH3 CH;CH2-CH- CH-CH,-CH-CH-CH3 CH3 CH,CH3 CH3 CHCH3 CH,CH3 CH;CH, CH-CH-CH,-CH–ĊH-CH,CH,CH3 CH3 CH3 O They are different molecules which are not isomers. O They are identical. O They are isomers of each other. O none of the above Submit Request AnswerCH3 H3C. 1. ČH3 3-isopropyl-5-methylcyclohexanol There are four cis,trans isomers for 3-isopropyl-5-methylcyclohexanol, where the cis,trans designations of the substituents are made relative to the OH group: • up, up, up (cis,cis) • up, up, down (cis,trans) down (trans.cis) • up, down, • up, down, up (trans,trans) Consider the most stable chair for each of these isonmers, and then draw the most stable and least stable isomer based on a comparison of the best chair for each one. • To simplify matters, consider only axial vs equatorial energies of the groups (i.e. do not worry about the interactions between the groups, which in reality is also • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • You do not have to explicitly draw H atoms. • Use "flat" representations of rings, not chairs, in your drawing. Most stable Least stableH3C. CH3 HO CH3 2-isopropyl-3-methylcyclohexanol There are four cis, trans isomers for 2-isopropyl-3-methylcyclohexanol, where the cis,trans designations of the substituents are made relative to the OH group: • up, up, up (cis.cis) • up, up, down (cis,trans) • up, down, down (trans,cis) up, down, up (trans,trans) Consider the most stable chair for each of these isomers, and then draw the most stable and least stable isomer based on a comparison of the best chair for each one. To simplify matters, consider only axial vs equatorial energies of the groups (i.e. do not worry about the interactions between the groups, which in reality is also important). Use the wedge hash bond tools to indicate stereochemistry where it exists. You do not have to explicitly draw H atoms. • Use "flat" representations of rings, not chairs, in your drawing. Least stable Most stable