Question

1) 2-amino-3-hydroxybutanoic acid

2) 2,3-dinitrobutane

A. Draw the skeletal structure (line-bond) for the following compounds. B. Convert the structures to the Most Stable and the Least Stable Newmann projections around (looking down) C2-C3 bond. (The numbering is based on the nomenclature locator numbers) C. On your skeletal structures, label the stereogenic centers (chiral carbons) if there are any. D. Draw all the possible stereoisomers for the compounds. Indicate which are enantiomer pairs. which are diastereomers to each other, and if any are meso compounds. E. Assign the appropriate configuration (such as 2R,3S) for each stereogenic center in each of the isomers. HO OHO 1.) 2-Amino-3-hydroxybutanoic acid 2N2 2.) 2,3-dinitrobutane

Answer 1

A) 2-aMino 3-hydaoy butanoic acid 2 HC-CH H-COOH NH2 OH CH3 CHOH)CHNHCOOH CH2 HOOP NHr 4 14 Coo Leart Stasle More Stahle slereo genie Centus c) 2,3-Carbons are Coo Coo 1 D) COOH CooH H-CIOH H-C-NH 4N--H HICIZH CH3 There g Sleresyic Gnlrs mo d oPhl mes 2 4

COOH R Cn briguralon NILA (lh) clocle una CHNAC CooH R Conbiann 1 O C-ALI 2R)-amino-3-R)-hydoxuy butanoic aei 2,3-dinio utane (a) CHsCHNoCHOe3 cH2 Nov 2) NO2 CH NO2 Lart Stare (Ecpsed) mofe StakStep TH han 2 slereo unic Caule 1 4-2-NO H-C-NO No C-4 ClC-NO No-e- CH3 C43 Quachve) (Muo) 2ts) -31R) dini butane