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ChemicalBook CAS DataBase List TRIETHYLAMINE HYDROBROMIDE
636-70-4

TRIETHYLAMINE HYDROBROMIDE synthesis

5synthesis methods
Triethylamine hydrobromide can be obtained by reacting triethylamine with hydrobromic acid:

(C2H5)3N + HBr → [(C2H5)3NH]Br

-

Yield:524678-17-9 80%

Reaction Conditions:

with triethylamine in dichloromethane;

Steps:

11.a a) Protection of 2-bromoethylammonium bromide

14 mmol (2.87 g) of 2-bromoethylammonium bromide 1 and 14 mmol (1.95 ml, 1.42 g) of triethylamine are dissolved with stirring in 100 ml of dichloromethane in a 150 ml two-necked flask. 10 mmol (1.51 g) of para-nitrobenzaldehyde 2 are added to the solution and the mixture is kept stirred overnight. [0201] The solvent is evaporated and the resulting yellow solid is taken up in 50 ml of dichloromethane and 50 ml of water. The organic phase is extracted with 3×25 ml of dichloromethane and washed with 3×25 ml of water, then dried over magnesium sulphate and concentrated under vacuum. 2.16 g of yellow solid 3 are obtained. The yield is 80%

References:

US2005/8568,2005,A1 Location in patent:Page 8

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