呋喃-2-磺酰胺

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: Dry toluene (150 ml), 25 ml oxalyl chloride (295), and a trace of DABCO (diaza-bicyclo[2.2.2]octane) were heated to 90°. Ten g of 2-furansulfonamide was added over a 15 minute period and the mixture was held at 95° for 2 hours. After filtering, the solvent was removed under vacuum to yield 2.1 g of an oil showing the characteristic isocyanate absorption in the infrared (2280 cm-1). After filtering the solvent was removed under vacuum

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

实验步骤: Twenty-three g of 2-furansulfonyl chloride (138 mm) was added dropwise into 200 ml of conc. NH4OH at 0°-5°. After stirring overnight at room temperature, the water was removed under vacuum and the precipitate washed with ice water and dried. Yield: 14 g 2-furansulfonamide m.p. 120-122°. (literature m.p. 120°-122°: JOC 18, 894 (1953)). IR (Nujol) 3250 cm-1, 3100 cm-1, 1600 cm-1 (W), 1550 cm-1, 1310 cm-1, 1190 cm-1, 1140 cm-1 1120 cm-1, 1055 cm-1, 1005 cm-1, 930 cm-1, 880 cm-1, 843 cm-1 (S). the water was removed under vacuum the precipitate washed with ice water dried

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

实验步骤: Dry toluene (150 ml), 25 ml oxalyl chloride (295), and a trace of DABCO (diaza-bicyclo[2.2.2]octane) were heated to 90°. Ten g of 2-furansulfonamide was added over a 15 minute period and the mixture was held at 95° for 2 hours. After filtering, the solvent was removed under vacuum to yield 2.1 g of an oil showing the characteristic isocyanate absorption in the infrared (2280 cm-1). After filtering the solvent was removed under vacuum

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

实验步骤: Twenty-three g of 2-furansulfonyl chloride (138 mm) was added dropwise into 200 ml of conc. NH4OH at 0°-5°. After stirring overnight at room temperature, the water was removed under vacuum and the precipitate washed with ice water and dried. Yield: 14 g 2-furansulfonamide m.p. 120-122°. (literature m.p. 120°-122°: JOC 18, 894 (1953)). IR (Nujol) 3250 cm-1, 3100 cm-1, 1600 cm-1 (W), 1550 cm-1, 1310 cm-1, 1190 cm-1, 1140 cm-1 1120 cm-1, 1055 cm-1, 1005 cm-1, 930 cm-1, 880 cm-1, 843 cm-1 (S). the water was removed under vacuum the precipitate washed with ice water dried

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

实验步骤: Twenty-three g of 2-furansulfonyl chloride (138 mm) was added dropwise into 200 ml of conc. NH4OH at 0°-5°. After stirring overnight at room temperature, the water was removed under vacuum and the precipitate washed with ice water and dried. Yield: 14 g 2-furansulfonamide m.p. 120-122°. (literature m.p. 120°-122°: JOC 18, 894 (1953)). IR (Nujol) 3250 cm-1, 3100 cm-1, 1600 cm-1 (W), 1550 cm-1, 1310 cm-1, 1190 cm-1, 1140 cm-1 1120 cm-1, 1055 cm-1, 1005 cm-1, 930 cm-1, 880 cm-1, 843 cm-1 (S). the water was removed under vacuum the precipitate washed with ice water dried

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

实验步骤: Dry toluene (150 ml), 25 ml of oxalyl chloride (295), and a trace of DABCO (diaza-bicyclo[2.2.2]octane) were heated to 90°. Ten g of 2-furansulfonamide was added over a 15 minute period and the mixture was held at 95° for 2 hours. After filtering, the solvent was removed under vacuum to yield 2.1 g of an oil showing the characteristic isocyanate absorption in the infrared (2280 cm-1). After filtering the solvent was removed under vacuum

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

实验步骤: Twenty-three g of 2-furansulfonyl chloride (138 mm) was added dropwise into 200 ml of conc. NH4OH at 0°-5°. After stirring overnight at room temperature, the water was removed under vacuum and the precipitate washed with ice water and dried. Yield: 14 g of 2-furansulfonamide, m.p. 120°-122° (literature m.p. 120°-122°: JOC 18, 894 (1953)). IR (Nujol) 3250 cm-1, 3100 cm-1, 1600 cm-1 (W), 1550 cm-1, 1310 cm-1, 1190 cm-1, 1140 cm-1, 1120 cm-1, 1055 cm-1, 1005 cm-1, 930 cm-1, 880 cm-1, 843 cm-1 (S). the water was removed under vacuum the precipitate washed with ice water dried

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: Dry toluene (150 ml), 25 ml of oxalyl chloride (295), and a trace of DABCO (diaza-bicyclo[2.2.2]octane) were heated to 90°. Ten g of 2-furansulfonamide was added over a 15 minute period and the mixture was held at 95° for 2 hours. After filtering, the solvent was removed under vacuum to yield 2.1 g of an oil showing the characteristic isocyanate absorption in the infrared (2280 cm-1). After filtering the solvent was removed under vacuum

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

实验步骤: Twenty-three g of 2-furansulfonyl chloride (138 mm) was added dropwise into 200 ml of conc. NH4OH at 0°-5°. After stirring overnight at room temperature, the water was removed under vacuum and the precipitate washed with ice water and dried. Yield: 14 g of 2-furansulfonamide, m.p. 120°-122° (literature m.p. 120°-122°: JOC 18, 894 (1953)). IR (Nujol) 3250 cm-1, 3100 cm-1, 1600 cm-1 (W), 1550 cm-1, 1310 cm-1, 1190 cm-1, 1140 cm-1, 1120 cm-1, 1055 cm-1, 1005 cm-1, 930 cm-1, 880 cm-1, 843 cm-1 (S). the water was removed under vacuum the precipitate washed with ice water dried

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

实验步骤: Dry toluene (150 ml), 25 ml oxalyl chloride (295), and a trace of DABCO (diaza-bicyclo[2.2.2]octane) were heated to 90°. Ten g of 2-furansulfonamide was added over a 15 minute period and the mixture was held at 95° for 2 hours. After filtering, the solvent was removed under vacuum to yield 2.1 g of an oil showing the characteristic isocyanate absorption in the infrared (2280 cm-1). After filtering the solvent was removed under vacuum