JINAN GREAT CHEMICAL INDUSTRY CO., LTD
ADD: Environmental Science and Technology Parks, Jinan,Shandong Province, China
Indole is catalyzed dehydrogenation by o-aminoethylbenzene. Neighboring amino ethyl benzene in nitrogen gas flow, in the presence of aluminum nitrate (or 3 oxidation 2 aluminium), in 550 ℃ dehydrogenation cyclization, by vacuum distillation of indole. Again in 640 ℃ dehydrogenation, indole. Other methods include the reaction of o-nitrotoluene and oxalate, which produces o-nitrophenylpyruvic acid and then alpha-indolylic acid, which ends up with the lime in a dry distillation of the product.
Mainly used as raw materials for spices, dyes, amino acids and pesticides. Indole itself is also a kind of spice, commonly used in jasmine, lilacs, lotus and orchid, etc., the dosage is usually a few thousand.
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