Isoquinoline (CAS NO 119-65-3)
Preparation:
Crude quinoline containing 83% quinoline, 15% isoquinoline and 2% methyl quinoline can be used as the raw material for the production of isoquinoline. However, the Distillation section from 237.5-239.5℃ and 243-246℃ is generally collected and used as the raw material for the extraction of isoquinoline. 13-28% of 2-methyl quinoline and 3.9% quinoline can be separated from this distillation section in the form of hydrochloride salt.
The isoquinoline fraction reacted with 98% sulfuric acid at 35℃ in alcohol solution to produce isoquinoline sulfonate. Isoquinoline sulfonate crystallizes faster than its homologues in the cooling process. After filtration, recrystallization was carried out with 85% ethanol, and then decomposed with 20% ammonia water. The generated oil layer was firstly washed with water, and then rectified to collect the fraction at242-243℃to obtain Isoquinoline with purity greater than 95% It is separated by repeated freezing the coal tar with the boiling rangeat 238～250℃.
Application:
Isoquinoline is used as a raw material for medicines, dyes, insecticides, anion exchange resins, etc., iron preservatives, curing agents for soluble phenolic resins, and the like. Addition compounds formed with metals can be used for the quantitative determination of nickel and cadmium and qualitative determination of precious metals. In the benzoylation reaction and the polymerization of α-olefin, isoquinoline can also be used as a catalyst.
About us
1. More than 12 years production experience
Xiaoyi Jinjing Chemical founded in 2006,which has produced coal chemical products more than 12 years. Our company has been committed to providing high-quality products in the fields of medicine, pesticides, dye raw materials and intermediates. Our company is a large-scale supplier of pharmaceutical raw materials, biological raw materials, pesticide raw materials, dye raw materials, veterinary raw materials research, development and production.
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