Bismuth is an imine with weak basicity; the double bond of a heterocyclic ring generally does not undergo an addition reaction; under the action of a strong acid, dimerization and tripolymerization can occur; under special conditions, aromatic electrophilicity can be carried out. In the substitution reaction, hydrogen at the 3-position is preferentially substituted, and if reacted with a sulfonyl chloride, 3-chloroindole can be obtained. A variety of reactions can also occur at the 3-position, such as formation of Grignard reagents, condensation with aldehydes, and Mannich reactions.
FEMA2593; INDOLE; BENZO(B)PYRROLE; 1-BENZAZOLE; 1-BENZO(B)PYRROLE;
White or slightly pink powdery crystals
253°C at 760 mmHg
|UN NO.||UN 2811 6.1/PG 3|
Cool,dry and hermetic place
Natural products are widely contained in essential oils such as bitter orange oil, sweet orange oil, lemon oil, lime oil, citrus oil, pomelo oil, and jasmine oil.
Can be widely used in jasmine, lilac, orange blossom, medlar, honeysuckle, lotus, daffodil, ylang-ylang, grass orchid, white orchid and other floral flavors. Very small amounts can be used in flavors such as chocolate, raspberry, strawberry, bitter orange, coffee, nuts, cheese, grapes and fruity complexes.
GB 27 60 specifies the edible flavors that are permitted. Mainly used to prepare flavors such as cheese, citrus, coffee, nuts, grapes, strawberries, raspberries, chocolate, assorted fruits, jasmine and lily.