- example, in the
following reaction, the
nitrogen atom is said to be
quaternized as it has gone from 3 to 4 substituents: R 3 N + RCl ⟶ R 4 N + Cl − {\displaystyle...
-
methacrylic acid,
quaternized with
dimethylsulphate Polyquaternium-9
Homopolymer of N,N-(dimethylamino)ethyl
ester of
methacrylic acid,
quaternized with bromomethane...
- acid (van
Slyke determination). With
methyl iodide, the
amine becomes quaternized to give trimethylglycine, a
natural product: H 3N+ CH 2COO− + 3 CH3I...
-
temperature overnight and at
reflux (39-40 °C) over
several hours to give the
quaternized product (see the
article on Selectfluor). Due to
steric hindrance and...
-
condensations to
occur at this position,
especially when the
nitrogen is
quaternized. It is used in the
preparation of
certain dyes. Quinaldine, the isomer...
-
tertiary amines: C6H5CH=NC4H9 + (CH3O)2SO2 → C6H5CH=N+(CH3)C4H9 + CH3OSO−3
Quaternized fatty ammonium compounds are used as a
surfactant or
fabric softener...
- 1-vinylimidazole
proceeds very
slowly at pH 9, but at pH 1 it is as fast as that of
quaternized 1-vinylimidazole. 1-Vinylimidazole is used
because of its high reactivity...
- ylides,
which are
reagents in the
Wittig reactions. Aryl
halides will
quaternize PPh3 to give
tetraphenylphosphonium salts: PPh3 + PhBr → [PPh4]Br The...
- amino-substituted
silicone and
silicone quats,
which contain permanently quaternized ammonium groups. In general,
amodimethicones and
silicone quats condition...
- formed. However, once the
benzimidazole is
detached from
cobalt by
quaternization with
methyl iodide, it is
replaced by H 2O or
hydroxyl ions. Various...
