5,5-dimethyl-1,4-dihydroimidazol-2-amine;hydrobromide

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture containing 2.0 g (10.3 mmol) of ethyl 3-(4-pyrimidinyl)-3-oxopropionate, 2.0 g (10.3 mmol) of 5,5-dimethyl-4,5-dihydro-1H-imidazol-2-ylamine hydrobromide and 2.85 g (20.6 mmol) of potassium carbonate in 15 ml of methanol were heated at reflux temperature during 18 h. were heated at reflux temperature during 18 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture containing 2.0 g (10.3 mmol) of ethyl 3-(4-pyrimidinyl)-3-oxopropionate, 2.0 g (10.3 mmol) of 5,5-dimethyl-4,5-dihydro-1H-imidazol-2-ylamine hydrobromide and 2.85 g (20.6 mmol) of potassium carbonate in 15 ml of methanol were heated at reflux temperature during 18 h. were heated at reflux temperature during 18 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 15 g (0.17 mol) of 1,2-diamino-2-methylpropane in 150 ml of water at 0° C., was added 18 g (0.17 mol) of cyanogen bromide portionwise and the temperature was allowed to warm to room temperature during 4 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture containing 2.09 (10.3 mmol) of ethyl 3-(4-pyrimidinyl)-3-oxopropionate, 2.0 g (10.3 mmol) of 5,5-dimethyl-4,5-dihydro-1H-imidazol-2-ylamine hydrobromide and 2.85 g (20.6 mmol) of potassium carbonate in 15 ml of methanol were heated at reflux temperature during 18 h. were heated at reflux temperature during 18 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 15 g (0.17 mol) of 1,2-diamino-2-methylpropane in 150ml of water at 0° C., was added 18 g (0.17 mol) of cyanogen bromide portionwise and the temperature was allowed to warm to room temperature during 4 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture containing 2.09 (10.3 mmol) of ethyl 3-(4-pyrimidinyl)-3-oxopropionate, 2.0 g (10.3 mmol) of 5,5-dimethyl-4,5-dihydro-1H-imidazol-2-ylamine hydrobromide and 2.85 g (20.6 mmol) of potassium carbonate in 15 ml of methanol were heated at reflux temperature during 18 h. were heated at reflux temperature during 18 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 15 g (0.17 mol) of 1,2-diamino-2-methylpropane in 150ml of water at 0° C., was added 18 g (0.17 mol) of cyanogen bromide portionwise and the temperature was allowed to warm to room temperature during 4 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A suspension of 4.5 g (23.2 mmol) of 5,5-dimethyl-4,5-dihydro-1H-imidazol-2-ylamine hydrobromide, 2.99 g (15.46 mmol) of ethyl 3-(pyridin-4-yl)-3-oxopropionate and 4.27 g (30.89 mmol) of potassium carbonate in 100 ml of ethanol was heated at reflux temperature for 18 h. was heated at reflux temperature for 18 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 15 g (0.17 mol) of 1,2-diamino-2-methylpropane in 150 ml of water at 0° C., was added 18 g (0.17 mol) of cyanogen bromide portionwise and the temperature was allowed to warm to room temperature during 4 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 15 g (0.17 mol) of 1,2-diamino-2-methylpropane in 150 ml of water at 0° C., was added 18 g (0.17 mol) of cyanogen bromide portionwise and the temperature was allowed to warm to room temperature during 4 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A suspension of 4.5 g (23.2 mmol) of 5,5-dimethyl-4,5-dihydro-1H-imidazol-2-ylamine hydrobromide, 2.99 g (15.46 mmol) of ethyl 3-(pyridin-4-yl)-3-oxopropionate and 4.27 g (30.89 mmol) of potassium carbonate in 100 ml of ethanol was heated at reflux temperature for 18 h. was heated at reflux temperature for 18 h.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 15 g (0.17 mol) of 1,2-diamino-2-methylpropane in 150 ml of water at 0° C., was added 18 g (0.17 mol) of cyanogen bromide portionwise and the temperature was allowed to warm to room temperature during 4 h. The water was removed by evaporation and ethanol was added and evaporated. Trituration in a mixture of diethyl ether and ethanol gave 29.5 g (89%) of product as an amorphous hygroscopic solid. The water was removed by evaporation and ethanol was added evaporated Trituration in a mixture of diethyl ether and ethanol