Portland State University - - Professor Carl C. Wamser

Chemistry 331 - Fall 1997

Chapter 7 Skills

Knowledge - Level 1

know the terminology:

alcohol, ether, hydroxy, alkoxy, epoxide
thiol, sulfide, disulfide
hydrogen bonding

know the nomenclature rules for alcohols, diols, ethers, thiols, sulfides

know the relative acidities of alcohols (pKa ~ 15-18), thiols (pKa ~ 8-9)


Concepts - Level 2

recognize that alcohols can act as acids or bases, analogous to water reactions

recognize that hydrogen bonding has a distinctive effect on boiling points and other interactions between molecules like solubility

understand the interrelationships between the various oxygen functional groups as different oxidation-reduction states

recognize that alcohols undergo substitution and elimination reactions from their protonated states, so that water is the effective leaving group

understand the SN1 and SN2 mechanisms as different ways of accomplishing a substitution reaction

understand the E1 and E2 mechanisms as different ways of accomplishing an elimination reaction

recognize the importance of carbocation stability in determining the favorability of an SN1 or E1 mechanism

recognize that SN2 or E2 mechanisms are favored when there is an unstable carbocation and minimal steric hindrance for direct substitution

recognize that ethers are mainly unreactive, with the exceptions being substitution reactions in strong acids (HBr, HI) and epoxides, which easily undergo additions of nucleophiles



Applications - Level 3

classify alcohols as 1°, 2°, 3°

write IUPAC names for alcohols, ethers, thiols

write common names for ethers and sulfides

write acid-base reactions of alcohols and thiols

predict preferred directions of acid-base reactions, knowing pKa values

write various reactions that can be used to prepare alcohols

hydration of alkenes
reduction of carbonyl and carboxyl compounds

write various reactions of alcohols

oxidation to carboxylic acids (1°) or ketones (2°)
oxidation to aldehydes (1° alcohols + PCC)
conversion to alkyl halides
dehydration to alkenes



Analytical Skills - Level 4

write mechanisms for substitution and elimination reactions of alcohols or ethers

write mechanisms for addition reactions of epoxides, using acid or base


Synthesis Skills - Level 5

write synthetic sequences that lead to a target compound