4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE
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4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE
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CAS No:
1682-20-8
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Formula:
C5H2F4N2
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Chemical Name:
4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE
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Synonyms:
4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE;4-AMINO-2,3,5,6-TETRAFLUORROPYRIDINE;4-AMINOTETRAFLUOROPYRIDINE;2,3,5,6-Tetrafluoro-pyridin-4-ylamine;4-AMino-2,3,5,6-terafluoropyridine;4-Amino-2,3,5,6-tetrafluoropyridine 98%;4-Pyridinamine, 2,3,5,6-tetrafluoro-
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CAS No:
4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE Basic Attributes
166.08
166.015411
475870
DTXSID60361523
29333990
Safety Information
NONH for all modes of transport
3
20/21/22-36/37/38
26-36
Xn,Xi
Irritant
P261-P280-P305 + P351 + P338
H302 + H312 + H332-H315-H319-H335
|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, and P501|Aggregated GHS information provided by 44 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE Use and Manufacturing
4-amino-2, 3, 5, 6-tetrauoropyridine 1 wassynthesized from 2, 3, 4, 5, 6-Pentafluoropyridine(25 g, 148 mmol) was dissolved in THF (175 ml)in a round-bottomed ask equipped with a reuxcondenser to give a clear solution. On addition ofaqueous ammonia (0.88, 125 ml) a cloudy solutionwas produced and an exothermic reaction ensued.The mixture was then reuxed for 18 hours. Theclear solution produced was poured into water (500ml) and the whole mixture was extracted with ether(3x75ml). The extract was dried (MgSO4), evaporatedusing rotary evaporator and the residue freed fromthe last traces of solvent in vacuo, to give a palecream solid. Recrystallization of the crude materialfrom light petroleum gave long white needles of4-amino-2, 3, 5, 6-tetrauoropyridine 1 (20 g, 0.12 mol, 80percent), mp. 85–87°C; IR (KBr, cm-1): 3500-3300 (NHstr.) 1450-1190 Py-F; 1H (CDCl3): d 5.05 (2H, br s, -NH2; 19F (CDCl3): d 15.1 (2F, m, F-2 and F-6), -85.1(2F, F-3 and F-5); MS: m/z 166 ([M]+, 100percent).Under nitrogen protection, In a 500 ml three-necked flask, add compound N1 (31.49 g, 1 equivalent), Acetonitrile (200 ml), Slowly add compound M4 (49.80 g, 3 eq) (compound M4 dissolved in 50 ml of acetonitrile), Stir for 4 hours at room temperature, The obtained compound was recrystallized from acetonitrile, Intermediate 1-3 was obtained (54.99 g, 78% yield).
Computed Properties
Molecular Weight:166.08
XLogP3:1.2
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:6
Exact Mass:166.01541072
Monoisotopic Mass:166.01541072
Topological Polar Surface Area:38.9
Heavy Atom Count:11
Complexity:130
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE
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