环丁烷-1,3-二酮

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 7.1 g of dicyclohexylamine (98 percent; 38.3 mmol) in 15 ml of ethyl acetate was instilled in a suspension of 3.0 g of 1,3-cyclobutanedione (97 percent; 34.6 mmol) in ethyl acetate (52.2 ml) at 20° C. in 15 minutes. After 1 hour of stirring at room temperature, the suspension was washed four times -with ethyl acetate and dried under vacuum. 9.4 g of the title product with a content of 94.7 percent (according to HPLC), corresponding to a yield of 96.7 percent, relative to cyclobutanedione, was obtained. Data for the title compound was: the suspension was washed four times -with ethyl acetate dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 4.99 g of dicyclohexylmethylamine 25.0 mmol) in 10 g of ethyl acetate was instilled in a suspension of 2.11 g of 1,3 cyclobutanedione (23.0 mmol]at 20° C. and stirred for 1 hour. After another 30 minutes of stirring at 5° C., the suspension was filtered and dried under vacuum. 5.53 g of the title product with a purity of 94.7 percent (according to HPLC), corresponding to a yield of 81.4 percent, relative to the cyclobutanedione, was obtained. Data for the title compound was: After another 30 minutes of stirring at 5° C. the suspension was filtered dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 3.21 g of N,N-dimethylcyclohexylamine (99 percent; 25.0 mmol) in 10 g of ethyl acetate was instilled in a suspension of 2.1 g of 1,3-cyclobutanedione (91.9 percent; 23.0 mmol) in 40 g of ethyl acetate at 20° C. in 15 minutes. After 1 hour of stirring at room temperature, the suspension was filtered and dried under vacuum. 4.27 g of the title product with a purity of 94.8 percent (according to HPLC), corresponding to a yield of 83.3 percent, relative to the cyclobutanedione, was obtained. Data for the title compound was: the suspension was filtered dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 7.1 g of dicyclohexylamine (98 percent; 38.3 mmol) in 15 ml of ethyl acetate was instilled in a suspension of 3.0 g of 1,3-cyclobutanedione (97 percent; 34.6 mmol) in ethyl acetate (52.2 ml) at 20° C. in 15 minutes. After 1 hour of stirring at room temperature, the suspension was washed four times with ethyl acetate and dried under vacuum. 9.4 g of the title product with a content of 94.7 percent (according to HPLC), corresponding to a yield of 96.7 percent, relative to cyclobutanedione, was obtained. Data for the title compound was: the suspension was washed four times with ethyl acetate dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 7.1 g of dicyclohexylamine (98 percent; 38.3 mmol) in 15 ml of ethyl acetate was instilled in a suspension of 3.0 g of 1,3-cyclobutanedione (97 percent; 34.6 mmol) in ethyl acetate (52.2 ml) at 20° C. in 15 minutes. After 1 hour of stirring at room temperature, the suspension was washed four times with ethyl acetate and dried under vacuum. 9.4 g of the title product with a content of 94.7 percent (according to HPLC), corresponding to a yield of 96.7 percent, relative to cyclobutanedione, was obtained. Data for the title compound was: the suspension was washed four times with ethyl acetate dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 4.99 g of dicyclohexylmethylamine (25.0 mmol) in 10 g of ethyl acetate was instilled in a suspension of 2.11 g of 1,3-cyclobutanedione (23.0 mmol) at 20° C. and stirred for 1 hour. After another 30 minutes of stirring at 5° C., the suspension was filtered and dried under vacuum. 5.53 g of the title product with a purity of 94.7 percent (according to HPLC), corresponding to a yield of 81.4 percent, relative to the cyclobutanedione, was obtained. Data for the title compound was: After another 30 minutes of stirring at 5° C. the suspension was filtered dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 4.99 g of dicyclohexylmethylamine (25.0 mmol) in 10 g of ethyl acetate was instilled in a suspension of 2.11 g of 1,3-cyclobutanedione (23.0 mmol) at 20° C. and stirred for 1 hour. After another 30 minutes of stirring at 5° C., the suspension was filtered and dried under vacuum. 5.53 g of the title product with a purity of 94.7 percent (according to HPLC), corresponding to a yield of 81.4 percent, relative to the cyclobutanedione, was obtained. Data for the title compound was: After another 30 minutes of stirring at 5° C. the suspension was filtered dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 3.21 g of N,N-dimethylcyclohexylamine (99 percent; 25.0 mmol) in 10 g of ethyl acetate was instilled in a suspension of 2.1 g of 1,3-cyclobutanedione (91.9 percent; 23.0 mmol) in 40 g of ethyl acetate at 20° C. in 15 minutes. After 1 hour of stirring at room temperature, the suspension was filtered and dried under vacuum. 4.27 g of the title product with a purity of 94.8 percent (according to HPLC), corresponding to a yield of 83.3 percent, relative to the cyclobutanedione, was obtained. Data for the title compound was: the suspension was filtered dried under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 3.21 g of N,N-dimethylcyclohexylamine (99 percent; 25.0 mmol) in 10 g of ethyl acetate was instilled in a suspension of 2.1 g of 1,3-cyclobutanedione (91.9 percent; 23.0 mmol) in 40 g of ethyl acetate at 20° C. in 15 minutes. After 1 hour of stirring at room temperature, the suspension was filtered and dried under vacuum. 4.27 g of the title product with a purity of 94.8 percent (according to HPLC), corresponding to a yield of 83.3 percent, relative to the cyclobutanedione, was obtained. Data for the title compound was: the suspension was filtered dried under vacuum