
Concept explainers
(a)
Interpretation:
The Fischer structure for the open chain form of tagatose is to be drawn.
Concept introduction:
An asymmetric carbon atom is represented as a cross in Fisher projection. The carbon chain is kept along the vertical line. The groups attached asymmetric carbon atoms are arranged according to their configuration in Fisher projection. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) aur (S) to (R).
(b)
Interpretation:
The most stable conformation of the most stable cyclic hemiacetal form of tagatose is to be drawn.
Concept introduction:
The most stable cyclic conformation is the one in which heavier groups are at the equatorial position and the lighter groups are at the axial position to avoid any steric hindrance.

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Chapter 23 Solutions
Student's Solutions Manual for Organic Chemistry
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- Classify each of the following molecules as aromatic, antiaromatic, or nonaromatic. ZI NH Explanation Check O aromatic O antiaromatic O nonaromatic O aromatic O antiaromatic H O nonaromatic O aromatic O antiaromatic O nonaromatic ×arrow_forwardPart I. Draw the stepwise reaction mechanism of each product (a, b, c, d, e, f) HO HO OH НОН,С HO OH Sucrose HO CH₂OH H N N HO -H H -OH KMnO4, Heat H OH CH₂OH (d) Phenyl Osatriazole OH НОН,С HO HO + Glacial HOAC HO- HO CH₂OH OH HO Fructose (a) Glucose OH (b) H₂N HN (c) CuSO4-5H2O, ethanol H N N N HO ·H H OH H OH N CH₂OH OH (f) Phenyl Osazone H (e) Carboxy phenyl osatriazole Figure 2.1. Reaction Scheme for the Total Synthesis of Fine Chemicalsarrow_forwardWhich molecule is the most stable? Please explain.arrow_forward
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