quiz3-1999-2000

quiz3-1999-2000 - (continue to reverse side for Question 4...

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Quiz #3, CHEM 111, Fall Semester, 1999/2000 Student Name: Student ID #: Section: Note: You are required to complete all questions independently and reference materials are prohibited. Total marks for this quiz is 50 points. Question 1: Which of the following compounds are chiral? (8 points) (A) (B) (C) (D) N Me N N O O O Me N H H H H COOH CH 3 HO H CHO CH 3 Answer: Question 2: Place asterisks (*) at all stereogenic centers in the following molecules: (14 points) H 3 C CH 3 CH 3 OH (A) (B) (C) H 3 C CH 3 O H 3 C Br Br H H Answer: (just place asterisks on the above structures) Question 3: Assign R , S configurations to each stereogenic centers in the following molecules: (8 points) CH 3 C COOH Cl H (A) (B) (C) C C H CH 3 H OH Br CH 3 H OH CHO H H CH 2 OH Answer: (just mark R , S configurations on the above structures)
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Unformatted text preview: (continue to reverse side for Question 4 ) Question 4: Which of the following molecules represent meso compounds? (12 points) (A) (B) (C) (D) OH OH H H Br H H Br H 3 C Br C H CH 3 Br H C H OH CH 2 OH H HO CH 2 OH Answer: Question 5: Assign R , S configurations to each molecules given below and determine which molecules are enantiomers and which are the same molecules? (8 points) (A) (B) CH 3 C COOH Br H CH 3 C COOH H Br CH 3 C CH 2 OH Br H CH 2 OH C CH 3 H Br and and Answer: (just mark R , S configurations on the above structures) The molecules in (A) are: The molecules in (B) are:...
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This note was uploaded on 02/27/2010 for the course CHEM CHEM111 taught by Professor Dai during the Fall '06 term at HKUST.

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quiz3-1999-2000 - (continue to reverse side for Question 4...

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