ethyl 3-bromo-4,5-dihydro-1,2-oxazole-5-carboxylate

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

Procedure: A mixture of ethyl 3-bromo-4,5-dihydroisoxazole-5-carboxylate (6.2 g, 28 mmol) and a solution of 2M ammonia in MeOH (56 mL) was stirred at room temperature for 1-2 h. Volatile materials were removed in vacuo to give the crude title compound as a white solid. Volatile materials were removed in vacuo

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

Procedure: To a vigorously stirred mixture of hydroxycarbonimidic dibromide (15.5 g, 76.4 mmol) and ethyl acrylate (15.3 g, 153 mmol) in DMF (200 mL) was added a solution of 15 wt % aqueous KHCO3 (102 mL, 153 mmol). The mixture was stirred at room temperature overnight. Water was added and the mixture was extracted twice with methyl tert-butyl ether. The combined extracts were washed with brine, dried (Na2SO4) and concentrated in vacuo to give the title compound. the mixture was extracted twice with methyl tert-butyl ether The combined extracts were washed with brine dried (Na2SO4) concentrated in vacuo

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

Procedure: To a vigorously stirred mixture of hydroxycarbonimidic dibromide (15.5 g, 76.4 mmol) and ethyl acrylate (15.3 g, 153 mmol) in DMF (200 mL) was added a solution of 15 wt % aqueous KHCO3 (102 mL, 153 mmol). The mixture was stirred at room temperature overnight. Water was added and the mixture was extracted twice with methyl tert-butyl ether. The combined extracts were washed with brine, dried (Na2SO4) and concentrated in vacuo to give the title compound. the mixture was extracted twice with methyl tert-butyl ether The combined extracts were washed with brine dried (Na2SO4) concentrated in vacuo

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

Procedure: A mixture of ethyl 3-bromo-4,5-dihydroisoxazole-5-carboxylate (6.2 g, 28 mmol) and a solution of 2 M ammonia in MeOH (56 mL) was stirred at room temperature for 1 to 2 hours. Volatile materials were removed in vacuo to give the crude title compound as a white solid. Volatile materials were removed in vacuo

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

Procedure: To a vigorously stirred mixture of hydroxycarbonimidic dibromide (15.5 g, 76.4 mmol) and ethyl acrylate (15.3 g, 153 mmol) in DMF (200 mL) was added a solution of 15 wt % aqueous KHCO3 (102 mL, 153 mmol). The mixture was stirred at room temperature overnight. Water was added and the mixture was extracted twice with methyl tert-butyl ether. The combined organic extracts were washed with brine, dried (Na2SO4) and concentrated in vacuo to give the title compound. the mixture was extracted twice with methyl tert-butyl ether The combined organic extracts were washed with brine dried (Na2SO4) concentrated in vacuo

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

Procedure: A mixture of ethyl 3-bromo-4,5-dihydroisoxazole-5-carboxylate (6.2 g, 28 mmol) and a solution of 2M ammonia in MeOH (56 mL) was stirred at room temperature for 1-2 h. Volatile materials were removed in vacuo to give the crude title compound as a white solid. Volatile materials were removed in vacuo

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

Procedure: To a vigorously stirred mixture of hydroxycarbonimidic dibromide (15.5 g, 76.4 mmol) and ethyl acrylate (15.3 g, 153 mmol) in DMF (200 mL) was added a solution of 15 wt % aqueous KHCO3 (102 mL, 153 mmol). The mixture was stirred at room temperature overnight. Water was added and the mixture was extracted twice with methyl tert-butyl ether. The combined extracts were washed with brine, dried (Na2SO4) and concentrated in vacuo to give the title compound. the mixture was extracted twice with methyl tert-butyl ether The combined extracts were washed with brine dried (Na2SO4) concentrated in vacuo