Which of the following is a gauche conformer? Select the list that places the su

Question

Which of the following is a gauche conformer? Select the list that places the substituents from the highest priority to lowest priority when you try to determine R or S configuration. A. -CH_2CH_2l > -HC -CH_2 > -CH_3 > -H B. -CH_2Br > -Br > -CI > -CH_3 C. -CH_2CH_3 > -CH_3 > -CH_2OH > -H D. -OCH_3 > -OH > -CH_3 > -H Which of the following is the correct structure for a compound with the IUPAC name (R)-2- pentanol. Which of the following is the correct IUPAC name for the following structure? A. (S)-3-ethyl-2-methylhexane B. (R)-3-ethyl-2-methylhexane C. (S)-3-ethyl-2-methylpentane D. (R)-3-ethyl-2-methylpentane What is the IUPAC name of the following compound? A. (2S, 3S) - 2, 3-dibromopentane B. (2S, 3R) - 2, 3-dibromopentane C. (2R, 3S) -2, 3-dibromopentane D. (2R, 3R) - 2, 3-dibromopentane Which of the following is a diastereomer of the following compound.

Explanation / Answer

10.A

B,C are eclipsed and D is anti conformation

11.D

Priority given according to Cohn in gold rules

13.C

14.A

15.D

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