CH3 Fischer Projection Br CI Wedge-and-Dash Diagram CH3 H- Br Br Fischer Projection H3C

Please draw all four bonds at chiral centers. Use wedge and dash bonds at chiral centers only. Do not use wedges and dashes at non- chiral centers. D 2 0 ² 0 +t H H OH Will H H H с N O S F P Cl Br I

Which of the following compounds is/are chiral? CH3 CH3 H H3C CH3 H. H "CH2CH3 Br H H Br H CH3 H H 2 3 only 1 only 1 and 2 on 2 and 3 only 1, 2 and 3

Highlight each chiral center in the following molecule. If there are none, then check the box under the drawing area. HO There are no chiral centers. CI X 3

Convert the following chair drawing into a dash-wedge drawing. HO The following: CH3 CI H3C CI OH The following: H3C CI

ITEM #5 (Everyone should look at this question). Consider the two Fischer projections shown at right. They CH CH are NOT of the same molecule. H- -HO- HO In a short paragraph, explain why the molecules shown are NOT the same. OH но- H. HO. но In your explanation, describe how the groups of a Fischer projection are positioned in the ACTUAL molecule (Are the molecules flat in real life, or three-dimensional in real life? If three-dimensional, where exactly are the Hs and OHs positioned when one interprets these projections?) H- HO но H- CH,OH ČH;OH Also in your explanation, describe why the second molecule is not simply the first molecule flipped over (like a pancake).

X According to the molecular formula C4H9CI, we can have three different isomers. True False hp

Paylben

Draw Fischer projection and determine the configuration