Problems: 1. What is the IUPAC name ofthe compound shown in the following Newman

Question

Problems: 1. What is the IUPAC name ofthe compound shown in the following Newman projection CH3 H3C H3C CH3 2. Which statement is correct concerning the relative stabilities ofthe two conformations, A and B, below? CII HC. CH CH3 a. A is more stable. b. B is more stable. c. A and Bare equal in stabilities. preferred conformation cannot be determined d. A and Bare not equal in stability, but the by inspection. 3. Which statement is correct concerning the relative stabilities of the two conformations, A and B, below? CH3 CII H3C a. A is more stable. b. B is more stable. c. A and Bare equal in stabilities. d. A and B are not equal in stability, but the preferred conformation cannot be determined by inspection.

Explanation / Answer

1) 2,3 dimethylbutane

2) option C in which both substitutents are one equatorial andone axial

3) option B the one with two equatorial and one axial substitutent is more stable

4) option B

5) option d the larger groups always occupies the equatorial position for stability

8) B is more stable

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