Flashcards
25.4- DIRECTING GROUPS
Cards in this deck (15)
- 1What 2 isomers are formed when phenol undergoes an electrophilic substitution reaction with nitric acid?2-nitrophenol and 4-nitropheol.
- 2What is a second substitution called?Disubstitution.
- 3Does bromine require a halogen carrier catalyst to react with benzene?Yes.
- 4Does bromine require a halogen carrier catalyst to react with phenylamine?No.
- 5How fast does nitrobenzene react with bromine and what conditions are required?Nitrobenzene reacts slowly with bromine. It requires a halogen carrier catalyst and a high temperature.
- 6Is the benzene ring in nitrobenzene more or less susceptible to electrophilic substitution than benzene itself?Less.
- 7Where does the -NH2 group direct the second substituent?Positions 2 or 4.
- 8Where does the -NO2 group direct the second substituent?Position 3.
- 9What position does ortho refer to?2.
- 10What position does meta refer to?3.
- 11What position does para refer to?4.
- 12Which directing groups are activating?2 and 4 (ortho and para).
- 13Which directing groups are deactivating?3 (meta).
- 14What are 8 examples of 2- and 4-directing groups? (activating)-NH2, -OH, -OR, -C6H5, -F, -Cl, -Br, -I
- 15What are 8 examples of 3- directing groups? (deactivating)RCOR, -COOR, -SO3H, -CHO, -COOH, -CN, -NO2, -NR3+.
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- A2 A2 CHEMISTRY (AROMATIC COMPOUNDS) Flashcards on 25.4- DIRECTING GROUPS, created by vittoria howard on 21/11/2016.
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