Question

V Using Models of Compounds with Two Chiral Centers 25. On your drawing, use arrows to indicate the at- oms that could be chiral centers (34). 23. Construct a model of 2,3,4-trihydroxybutanal, as shown in Figure 4 26. Make a template for the atoms attached to carbon 2 in the molecule. The groups of atoms attached to carbon 2 may not touch the paper, but you can still mark their relative positions (35). OH OH HI H-C C aC 27. Swap the hydroxyl group and the hydrogen atom on carbon 2. Use your template to determine whether or not carbon 2 is a chiral center (36). hiaU V H H H OH 28. Repeat Steps 26-27 for carbon 3 in the molecule. Is carbon 3 a chiral center (37)? 29. Repeat Steps 26-27 for carbon 4 in the molecule. Is carbon 4 a chiral center (38)? Figure 4 The structural formula for 2,3,4-trihydroxybutanal 30. How many chiral centers are there in the mole- cule (39)? How many optical isomers are possible for this molecule (40)? . On your Data Sheet, sketch your model next to e structural formula of the molecule (33).

Answer 1

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