Organic Chemistry Answers

What IR absorptions are most affected by intramolecular hydrogen bonding in the compound

shown below?

Methyl group C-H stretching

b) Hydroxyl group O-H stretching

c) Aromatic ring C-H bending

d) Aromatic ring C-H stretching

d) Aromatic ring C-C stretching

What is the mechanism of the following reaction

CH₂=CH(CH₃)-CH₂-CH₃ + BF₃.MeOH + MeOH   →    CH₃-C(CH₃)(O-CH₃)-CH₂-CH₃

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Deduce the structure of a disaccharide from the following information:

I. Complete hydrolysis yield only D-glucose. It is hydrolyzed by only α-glucosidase, but not β-glucosidase

II. It does not reduce Cu²⁺ to Cu₂O

Draw the structure of the disaccharide isomaltose, given the following information:

I. It is composed of 2 D-glucose units.

II. The glycosidic bond is α(1->6)

III. The anomeric carbon not involved in the glycosidic bond is in the β configuration

Which of the following molecules have a dipole moment?

a. H2O

b. CO2

c. SO2

d. CH4

Write the condensed structural formula of:

(a) 3-methy-2-octene

(b) 1,3,5 -decatriene

(c) 3-nonyne

Draw the line-angle formula of the straight-chain (no carbon side chain) positional isomers of (a) CH 3 CH ═ CHCH 2 CH 2 CH 2 CH 3 (b) CH 3 C≡CCH 2 CH 2 CH 3 and give the corresponding IUPAC name.