Question

please help for part A, B, and C

(a) Make models of the four 2-bromo-3-hydroxybutanal isomers. Accurately sketch them in the boxes. Use solid and dashed wedges where necessary. (2 pts) (b) For each isomer, draw a Newman projection for the most stable conformation of the C(2)-C(3) bond. (2 pts) (c) Use the RIS system to assign the absolute configuration of each chiral (stereogenic) center. (1 pt) Configuration? (2R, 3S) (2s, 3R (2S, 3S) (2R 3R) Configuration? (2R, 3S) (2S, 3R) B (2S, 3S) (2R 3A) Configuration? (2R, 3S) (2S, 3R C (2S, 3S) (2R, 3R) Configuration? (2R, 3S) (2S, 3) (2S, 35) (2R 3R) Br

Answer 1

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