4-Fluoro-2-benzothiazolamine
-
4-Fluoro-2-benzothiazolamine
structure -
-
CAS No:
20358-06-9
-
Formula:
C7H5FN2S
-
Chemical Name:
4-Fluoro-2-benzothiazolamine
-
Synonyms:
2-Benzothiazolamine,4-fluoro-;Benzothiazole,2-amino-4-fluoro-;4-Fluoro-2-benzothiazolamine;2-Amino-4-fluorobenzothiazole;(4-Fluorobenzothiazol-2-yl)amine;4-Fluorobenzothiazol-2-amine
-
CAS No:
Characteristics
67.2
2.1
1.5±0.1 g/cm3
101 °C @ Press: 760 Torr
142.5±25.7 °C
1.726
0.000542mmHg at 25°C
Safety Information
24/25
P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501
H302
|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
4-Fluoro-2-benzothiazolamine Use and Manufacturing
To a suspension of (2-fluorophenyl) thiourea (1.7g, 10.0 mmol) in chloroform [(25ML)] was added a solution of bromine (0.51 mL; 10.0 mmol) dropwise at room temperature. The resulting mixture was heated under reflux for 3 hrs. The solvent was evaporated, water was added and the mixture was neutralized with ammonium hydroxide. The resulting white precipitation was collected by filtration and dried to yield 1.2 g (72percent) of the title compound which was used in the subsequent step without further purification.General procedure: To a mixture of aniline (1) (2.0 g, 0.021 mol) and ammonium thiocyanate (6.5 g, 0.086 mol), bromine (2.2 mL, 0.043 mol) in dichloromethane (20 mL) and stirred for 16 h at ambient temperature. Later than water was added to the reaction mixture and the product was extracted in dichloromethane (3 × 30 mL). The solvent was evaporated under vacuum to afford the as crude, which was further purified by column chromatography using EtOAc:Hexane (4:6) to give compounds 2a-d.General procedure: A mixture of aniline (0.05mol) and NH