Midterm-2_Ochem_Ternansky

Midterm-2_Ochem_Ternansky - Chemistry 140A Fall, 2010...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 140A TOTAL POSSIBLE: 250 Fall, 2010 POINTS MISSED: - 0 Second Midterm Exam-250 points 11/18/10 TOTAL: 250 DO NOT OPEN THIS EXAM UNTIL INSTRUCTED TO DO SO. ....FILL OUT THE FOLLOWING INFORMATION NOW : . LAST NAME (Print): KEY FIRST NAME (Print): Ima PID: __________________________________________________ SIGNATURE: __________________________________________ ID checker initials: ____________________ If you wish to have any answers considered for a re-grade, your exam must be completed in INK .
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1. (20 points) You will recognize taxol (shown below) from exam-1. For each circled, numbered atom in taxol, designate (on the line provided) the chirality as “R”, “S” or “NC” (for “not chiral). O O H O O O OH O HO O O O O N H O OH 1 2 3 4 5 6 7 8 9 10 1. _______ 2. _______ 3. _______ 4. _______ 5. _______ 6. _______ 7. _______ 8. _______ 9. _______ 10. ______ S S S S S S S S R R ( 2 pts ea) 2. (18 points) Classify each of the following molecules as “chiral”, “meso and achiral”, or “achiral but not meso”. Make your selection by placing an “X” in the appropriate box below each structure. (2 pts each) CHIRAL MESO (achiral) ACHIRAL (NOT meso) CH 3 H CHIRAL MESO (achiral) ACHIRAL (NOT meso) CHIRAL MESO (achiral) ACHIRAL (NOT meso) H CH 3 Br H 3 C H Br CH 3 H Cl Cl H H
Background image of page 2
Cl Cl CHIRAL MESO (achiral)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/22/2011 for the course CHEM 143b taught by Professor Staff during the Spring '08 term at UCSD.

Page1 / 10

Midterm-2_Ochem_Ternansky - Chemistry 140A Fall, 2010...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online