Please help with row 3: Follow the instructions in each column. Hint for the last column: draw it with a wedge and again with a dash – which gives the correct configuration?

To preview image Click here With respect to substituent Me, determine whether substituent Br is cis or trans. 1. Choose the correct option for A Cis 2. Choose the correct option for B Trans 3. Choose the correct option for C Cis C/₁ A ***||| Et Et B CI Et C CI

Part II (70 points) Directions: Answer each of the questions that follow. Please read the directions for each question carefully. When structures are required please draw them Clearly and Neatly. Make sure questions are numbered clearly as well. 1. (12 points; 2 points each) Give a correct name for each of the following compounds: CH3 A) CH—CH,C—CHICHCHCH, CH OH alf B) CH-CH₂- CH₂ -CH₂-CH₂

Consider the mechanism of the acid-catalyzed cleavage of the ether shown below. excess HBr heat Br Br O Complete the mechanism by adding curved arrows and products. Add steps as necessary and be sure to add lone pairs and charges where relevant. 田 C to :0 + Add/Remove step X

Solve both please neat and clean...

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).

Check the box under each compound that exists as a pair of mirror-image twins. If none of them do, check the none of the above box under the table. OH O || HỌ—CH2—CH—CH HỌ—CH2 -CH₂-OH none of the above OH H-C- CH-C-H C1O CH3 O CH3-CH-C-CH₂-OH X 5

Inspect the structures shown below and select the correct statement. COƏH HN-C-H CH2 ÇOH H2N-C-H CH2 COH HN-C-H CH2 COH HN-C-H Он SH 1 2 4 O #1 and #4 have the S configuration, #2 and #3 have the R configuration. O All structures have the R configuration. O All structures have the S configuration. O #1, #2, and #4 have the S configuration and #3 has the R configuration. O #1 and #4 have the R configuration, #2 and #3 have the S configuration.

check all that apply

Curved Arrows-start at a pair of electrons. Not an atom or a charge. Assume any stereocenters are (S). SN2 Curved Arrows (H3C)2CHCH₂CH₂CH₂C(Br)CH3 SN1 Curved Arrows (H3C)2CHCH₂CH₂CH₂C(Br)CH3. NaOCH₂CH3 HOCH₂CH3