Chapter 31

H₂C

\text{═}

CHCO₂CH₃ < H₂C

\text{═}

CHCl < H₂C

\text{═}

CHCH₃ < H₂C

\text{═}

CH–C₆H₅

Problem 31-2

H₂C

\text{═}

CHCH₃ < H₂C

\text{═}

CHC₆H₅ < H₂C

\text{═}

CHC

\text{≡}

Problem 31-3

The intermediate is a resonance-stabilized benzylic carbanion, The structure shows phenyl group connected to a C H R group with lone pair of electron and negative charge on carbon.

Problem 31-4

The polymer has no chirality centers.

Problem 31-5

The polymers are racemic and have no optical rotation.

Vestenamer: ADMET polymerization of 1,9-decadiene or ROMP of cyclooctene; Norsorex: ROMP of norbornene.

The structure of norbornene comprising a cyclohexene ring and a bridged methylene group.

Problem 31-11

The structure shows a six-carbon chain with a methyl group at C3. The structure is inside parentheses and has a subscript n. It is labeled as atactic.

Problem 31-12

Phenol reacts with formaldehyde via electrophilic aromatic substitution to produce 2-(hydroxymethyl)phenol which reacts to produce a C H 2 attached to two phenols (each at their C 2).