7-Assess the type of isomers for the following pairs of molecules ((not isomers, conformers. enantiomers, diastereomers, meso, stereoisomers, constitutional isomers): OH F OMe OH F OH OH OH Он OH OH 수식 수
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- Build a model (attach a photo) for any of the following compounds. What is their relationship: (i) Identical in the same conformation, (ii) conformers, (iii) enantiomers, (iv) diastereomers, (v) constitutional (structural) isomers or none of (i) – (v)? H OH H. HO $Bu CI $Bu Relationship:Construct the chair structures with the molecular models for trans-1-ethyl-3-methylcyclohexane. Find the energy of each conformer, the equilibrium constant Keq, and the percentage of each conformer at 25oC. Indicate which conformer is more stable.4.(a). Draw the structures of (i) cis-1,4-Dibromocyclohexane and (ii) trans-1,4- Dibromocyclohexane. 4(b). Draw the most stable conformers of (i) cis-1,4-Dibromocyclohexane and (ii) trans-1,4-Dibromocyclohexane. 4(c)Which is more stable? (i) cis-1,4-Dibromocyclohexane or (ii) trans-1,4- Dibromolcyclohexane. Explain the reason for your choice.
- FO 23: Identify and draw conformers. NH₂ NH2 NH2 NH2 NH2 NH2 1 NH2 NH2 4 2 3 (a) List any two structures that are related as conformers. Answer by listing exactly two numbers. (b) Draw one conformer of the new structure shown here: 1 and 3 (b) OH HO OHQ2 Give the stereochemical relationships between each pair of structures. Examples are same compound, structural isomers, enantiomers, diastereomers fa CH. OH HO- OR HO CH, CH. CH,d) Molecular relationships; identify whether the compounds in each group are const. isomers, conformers, enantiomers, diastereomers, identical, meso or none of the above. ОН ОН H3C Br H3C LF H Br CH3 HO CI Br Br CI NH NH
- I: Determine the isomeric relationships between the following pairs of molecules. The possible answers include not isomers, identical molecules, constitutional isomers, conformational isomers, enantiomers, dia F HO G CH3 но- CH3 ÓH H OH он NH2 NH2 CH3 CI ÇI CH3 ÕH ÓHDraw the conformational isomers of 1-bromo-2-chloroethane by rotating C-C single bond with dihedral angel 60°. AndWhy conformational isomers generally can not be separated from one another at room temperature?Build a model (attach a photo) for any of the following compounds. What is their relationship: (i) Identical in the same conformation, (ii) conformers, (iii) enantiomers, (iv) diastereomers, (v) constitutional (structural) isomers or none of (i) – (v)? 4 1.4 он H. LOH $Bu CI $Bu Relationship:
- Classify the pairs of molecules as not the same molecule, structural isomers, diastereomers, enantiomers or identical. Circle any molecules that are not achiral (a) (b) (c) Br... H CI H H Br H H3C Br H. CI Br H Br CI I I Br" "H H Br H CH3 Cr Br5. Draw the two chair conformations ("ring filips") of trans –1- ethyl-4-methylcyclohexane to show the axial and equatorial substituents (including all hydrogens). Then determine which of the two conformations is more stable and why.Which of the following line drawings represents the correct stereochemistry o molecule shown in the Newman projection below? E + Н. H I CH₂CH3 LOH H CH3 OH OH || IV OH 5.... OH A) I B) II C) III D) IV K