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The CAS registry number of 5-Bromo-2-trifluoromethyl-isonicotinic acid is 749875-16-9. Its molecular formula is C7H3BrF3NO2 and its formula weight is 270.0034.Its systematic name is 5-Bromo-2-(trifluoromethyl)pyridine-4-carboxylicacid . It is usually used as intermediate in organic syntheses.
The properties are like these: (1) #H bond acceptors: 3 ; (2) #H bond donors: 1 ; (3)#Freely Rotating Bonds: 1 ; (4) Polar Surface Area: 50.19Å ; (5) Index of Refraction: 1.518 ; (6) Molar Refractivity: 43.94 cm3 ; (7) Molar Volume: 144.8 cm3 ; (8) Polarizability: 17.42 *10-24cm3 ; (9) Surface Tension: 43.1 dyne/cm ; (10) Density: 1.863 g/cm3 ; (11) Flash Point: 178.5 °C ; (12) Enthalpy of Vaporization: 65.26 kJ/mol ; (13) Boiling Point: 371.6 °C at 760 mmHg; (14) Vapour Pressure: 3.52E-06 mmHg at 25°C .
Preparation: this chemical can be prepared by Carbon dioxide and 5-bromo-2-trifluoromethyl-pyridine. This reaction needs Lithium diisopropylamide, Tetrahydrofuran and Hexane.The reaction time is 45 min with reaction temperature of -75 °C .The yield is 67 %.