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- Following are structural formulas for 1,4-dioxane and piperidine. 1,4-Dioxane is a widely used solvent for organic compounds. Piperidine is found in small amounts in black pepper (Piper nigrum). (a) Complete the Lewis structure of each compound by showing all unshared electron pairs. (b) Predict bond angles about each carbon, oxygen, and nitrogen atom. (c) Describe the most stable conformation of each ring and compare these conformations with the chair conformation of cyclohexane.Following is a planar hexagon representation for one isomer of 1,2,4-trimethylcyclohexane. Draw the alternative chair conformations of this compound and state which of the two is more stable.Based on the given planar structure of 1,2,3-trichloro-4-methylcyclohexane, which of the following structures corresponds to the most stable chair conformation of the compound (Figure below)? CI 'CI CI CI CI CH3CI CI H3CZ CI CI CI H3CZ il CI CI CH3CI
- Starting from the wedge-and-dash structure below, rotate the back carbon to provide the Newman projection in the most stable conformation. H₂C H (H3C) 3C H H CH3 →Following is a planar hexagon representation for one isomer of 1,2,4-trimethylcyclohexane. Draw the alternative chair conformations of this compound and state which of the two is more stable. H,C CH3 H H H CH3Draw the structure for the most stable chair conformation of trans-1-tert-butyl-3-chlorocyclohexane. Use the cyclohexane conformation drawing tool and guide points to draw each structure. C1 M C™ X Ĉ
- In the lowest energy chair conformation of cis-1,3-dimethylcyclohexane, how many axial positions are occupied by hydrogen atoms? * O 2Select the more stable conformation overall. D A.Starting from the wedge-and-dash structure below, rotate the back carbon to provide the Newman projection in the most stable conformation. H3C H H3C H Br H
- what is the most stable conformation of (1R, 2S, 5R)-1,2,5-trimethylcyclohexaneConsider the isomers of tert-butylcyclohexanol in conformational structures. Two are cis-2-tert-butylcyclohexanol and two are cis-3-tert-butylcyclohexanol. Indicate which is the more stable conformation for each pair, and indicate which of all four conformations is the most stable. FIX a box OH HO OH A Select the more stable conformation of cis-2-tert-butylcyclohexanol. B OD C B C D ☐A C OH Select the more stable conformation of cis-3-tert-butylcyclohexanol.Are the C¬C bonds cyclopropane weaker than those in cyclohexane?