ethyl N-(ethoxycarbonylamino)carbamate

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure

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

Procedure: 1,4-Dibromobutane (81.4 mL, 0.682 mol) is added over 1 hour to a mixture of 1,2-dicarbethoxyhydrazine (100 g, 0.568 mol) and potassium carbonate (158 g, 1.14 mol) in acetonitrile (600 mL). The resultant reaction mixture is refluxed for 6 hours, cooled to room temperature, and filtered. The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure to give the title product as a colorless liquid (90.8 g, bp 115°-120° C. at 0.9 mm Hg). The resultant reaction mixture is refluxed for 6 hours filtered The filtrate is concentrated in vacuo to obtain a yellow liquid which is distilled under reduced pressure