Given the following structure and numbering: H HÖ 3 CO,H H;C 1 A (a) Label the stereocenters of A as R or S and draw a Fischer Projection of the enantiomer of A with C1 on top and C4 on bottom, (b) Draw a Newman Projection of a diastereomer of 4 looking down the C2-C3 bond with C2 in front.

thanks. For each of the following pairs of structures identify the stereochemical relationship as identical, constitutional isomers, enantiomers or diastereomers.

CH CH HO H CH CH 23 CI HOH CH HOH HOH A pair of enantiomers of the following is: CH; CH TT TTT TV 1 & II II & II 1 & IV III & IV None of the above

For the compound shown below, correctly label the stereogenic centers. OH HO. a CH,CH; H3C CH3 front C is R; back C is S O front C is S; back C is S front C is S; back C is R front C is R; back C is R

A compound with two chirality centers is shown (2S,3R)-2-bromo-3-chlorobutane. Convert the structure to the wedge and dash structure

Identify the configuration of each chiral center in the following compound, and draw all other stereoisomers with indication of the stereochemical relationship between each. H CI Br 18 Hous

Identify each stereocenter in these molecules (note that not all contain stereocenters): (a) (c) (a) OH gi (b) (c) (d) CHS 2 3 CHS (b) 1 OH 2 the he 2 (d) 3 0 NH

Label the chirality centers R or S on each of the following: CI NH2

Draw the enantiomer of the following compound: i CH H,C Edit Drawing CH,

F1 1) Which of the following molecules DOES NOT have a stereogenic center in the S configuration: CO₂H -H -H @ 2 O (A) O (B) O (C) O (D) O (E) W Br F2 (A) # 3 E 80 F3 $ 4 R (B) Q F4 % 5 OH 9 F5 T 6 CI (C) F6 Y & 7 F7 U CI H * 8 CH3 (D) DII F8 All molecules have a stereogenic center in the S configuration (E) 9 F9 F10 0 0 P F11