1,2-BISMALEIMIDOETHANE

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask was equipped as in Example 1. To a solution of maleic anhydride (3.64 parts) in 10.6 parts acetone was added a solution of 1 part ethylenediamine, 0.61 part triethylamine and 1.5 parts acetone over a 25-minute period. The resulting reaction mixture contained white solids and was maintained at 40° C. for 30 minutes. Magnesium chloride hexahydrate (0.15 part) and 4.6 parts acetic anhydride were added all at once. The reaction temperature was raised to 50° C. and held there for 2.5 hours. The homogeneous reaction mixture was cooled and 25 parts water added. The precipitated product was filtered by vacuum filtration, washed with water, and dried in a vacuum oven. A 27% yield of N,N'-ethylenedimaleimide, m.p. 193°-194° C., was obtained. A flask was equipped as in Example 1 The resulting reaction mixture The reaction temperature was raised to 50° C. The homogeneous reaction mixture was cooled The precipitated product was filtered by vacuum filtration washed with water dried in a vacuum oven

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask was equipped as in Example 1. To a solution of maleic anhydride (3.64 parts) in 10.6 parts acetone was added a solution of 1 part ethylenediamine, 0.61 part triethylamine and 1.5 parts acetone over a 25-minute period. The resulting reaction mixture contained white solids and was maintained at 40° C. for 30 minutes. Magnesium chloride hexahydrate (0.15 part) and 4.6 parts acetic anhydride were added all at once. The reaction temperature was raised to 50° C. and held there for 2.5 hours. The homogeneous reaction mixture was cooled and 25 parts water added. The precipitated product was filtered by vacuum filtration, washed with water, and dried in a vacuum oven. A 27% yield of N,N'-ethylenedimaleimide, m.p. 193°-194° C., was obtained. A flask was equipped as in Example 1 The resulting reaction mixture The reaction temperature was raised to 50° C. The homogeneous reaction mixture was cooled The precipitated product was filtered by vacuum filtration washed with water dried in a vacuum oven

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask was equipped as in Example 1. To a solution of maleic anhydride (3.64 parts) in 10.6 parts acetone was added a solution of 1 part ethylenediamine, 0.61 part triethylamine and 1.5 parts acetone over a 25-minute period. The resulting reaction mixture contained white solids and was maintained at 40° C. for 30 minutes. Magnesium chloride hexahydrate (0.15 part) and 4.6 parts acetic anhydride were added all at once. The reaction temperature was raised to 50° C. and held there for 2.5 hours. The homogeneous reaction mixture was cooled and 25 parts water added. The precipitated product was filtered by vacuum filtration, washed with water, and dried in a vacuum oven. A 27% yield of N,N'-ethylenedimaleimide, m.p. 193°-194° C., was obtained. A flask was equipped as in Example 1 The resulting reaction mixture The reaction temperature was raised to 50° C. The homogeneous reaction mixture was cooled The precipitated product was filtered by vacuum filtration washed with water dried in a vacuum oven

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask was equipped as in Example 1. To a solution of maleic anhydride (3.64 parts) in 10.6 parts acetone was added a solution of 1 part ethylenediamine, 0.61 part triethylamine and 1.5 parts acetone over a 25-minute period. The resulting reaction mixture contained white solids and was maintained at 40° C. for 30 minutes. Magnesium chloride hexahydrate (0.15 part) and 4.6 parts acetic anhydride were added all at once. The reaction temperature was raised to 50° C. and held there for 2.5 hours. The homogeneous reaction mixture was cooled and 25 parts water added. The precipitated product was filtered by vacuum filtration, washed with water, and dried in a vacuum oven. A 27% yield of N,N'-ethylenedimaleimide, m.p. 193°-194° C., was obtained. A flask was equipped as in Example 1 The resulting reaction mixture The reaction temperature was raised to 50° C. The homogeneous reaction mixture was cooled The precipitated product was filtered by vacuum filtration washed with water dried in a vacuum oven