5,6-DICHLORO-2,3-DICYANOPYRAZINE
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5,6-DICHLORO-2,3-DICYANOPYRAZINE
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CAS No:
56413-95-7
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Formula:
C6Cl2N4
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Chemical Name:
5,6-DICHLORO-2,3-DICYANOPYRAZINE
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Synonyms:
5,6-DICHLORO-2,3-DICYANOPYRAZINE;5,6-DICHLORO-2,3-PYRAZINEDICARBONITRILE;dichlorodicyanopyrazine;5,6-DICHLORO-2,3-DICYANOPYRAZINE 98+%;3-dicyanopyrazine;6-Dichloro-2
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CAS No:
Safety Information
III
6.1
2811
P264, P270, P280, P301+P310, P302+P352, P305+P351+P338, P321, P330, P332+P313, P337+P313, P362, P405, P501
H301
|Danger|H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 2 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
5,6-DICHLORO-2,3-DICYANOPYRAZINE Use and Manufacturing
FIG. 13 shows the reaction pathway. This reaction should be carried out in a fume hood. In a 500 mE round-bottomedflask with a 24/40 ground-glass joint attached to an efficient reflux condenser and under a nitrogen atmosphere, a magnetically stirred slurry consisting of 8.10 g (0.050 mol) of 1 , 4, 5, 6-tetrahydro-5, 6-dioxo-2, 3-pyrazinedicarbonitrile, 4.0 mE of dimethylformamide 306 and 160 mE of thionyl chloride 1301 was heated. Gas evolution began at ca. 62° [S02 & RC1 gasses evolved]. After about 3.5 hours, the solid had dissolved and the temperature had risen to 70°. Afier cooling to room temperature, a Dry Ice/acetone bath was applied until the temperature of the reaction medium was —65°. The crystals which formed were collected by rapid filtration of the cold slurry through a sintered-glass filter under a nitrogen blanket. The solid was washed twice with 1 50-ml portions of cold diethyl ether and air-dried to give 7 g (70percent) of 2, 3- dichloro-5, 6-dicyanopyrazine 301, mp 180-182°. Crystallization of the product may be accomplished if dark, from 50 mE of chloroform with carbon treatment to give 5.5 g of purified
Computed Properties
Molecular Weight:198.99
XLogP3:1.8
Hydrogen Bond Acceptor Count:4
Exact Mass:197.9500014
Monoisotopic Mass:197.9500014
Topological Polar Surface Area:73.4
Heavy Atom Count:12
Complexity:233
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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5,6-DICHLORO-2,3-DICYANOPYRAZINE
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