Service Tel:English name: Quinoline
CAS No.: 91-22-5
Molecular formula: C9H7N
Molecular weight: 129.16
Content: 98%
Physicochemical properties:
colorless liquid with special odor. The freezing point is -15.6 ° C, the boiling point is 238 ° C, and the relative density is 1.0929 (20 / 4 ° C). Slightly soluble in water, soluble in organic solvents such as ethanol and ether. The isoquinoline has a melting point of 26.5 ° C, a boiling point of 242.2 ° C (743 mm Hg), and a density of 1.0986 g / cm 3 (20 ° C), and its odor is completely different from that of quinoline. Both are basic, isoquinoline is more basic than quinoline, and can form salts with strong acids, such as picrate and dichromate; and quaternary ammonium salts with halogenated alkane. The quinoline is highly aromatic, and the benzene ring moiety is susceptible to electrophilic substitution at 5,8, for example, in the case of nitration or sulfonation, 5- and 8-nitro and sulfoquinolines are produced. The pyridine ring is stable, and when oxidized, the benzene ring is destroyed, and the pyridine ring is unchanged. The nature of isoquinoline is similar to that of quinoline. Nitrification and sulfonation occur at the 5-position of the phenyl ring, and the nucleophilic reaction occurs at the 1-position, such as reaction with sodium amide to form 1-aminoisoquinoline, while quinoline Aminoation at position 2. Industrially, the acidic sulphate of quinoline is dissolved in ethanol, and the acidic sulphate of isoquinoline is insoluble.
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