2-氰基乙酰亚氨酸甲酯盐酸盐

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

实验步骤: The mixture of methyl cyanoacetimidate hydrochloride (43.47 g, 0.32 mole) and 4-nitro-2-aminophenol (24.9 g, 0.16 mole) in methanol (260 ml) was heated at reflux for 3 h. The mixture was placed in an ice bath for 30 minutes and was filtered. The solid material was suspended in water (300 ml), stirred for a few minutes and filtered. It was washed with water (200 ml) and air dried to give 4-nitro-2-benzoxazoleacetonitrile (27.38 g, 83%). was heated at reflux for 3 h was filtered filtered It was washed with water (200 ml) and air dried

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

实验步骤: 2.69 g of methyl cyanoacetimidate hydrochloride, 1.68 g of cyanamide and 5.0 g of molecular sieve (type 4A, 60 mesh through) were suspended in 30 ml of benzene and the suspension was made to react for 5 hours at 25°C under stirring. After reaction, insoluble materials were filtered off and then the filtrate was concentrated to dryness in vacuo to give 2.26 g of methyl N-cyanocyanoacetimidate (yield 91.2%) mp 45.5°C. to react for 5 hours at 25°C After reaction, insoluble materials were filtered off the filtrate was concentrated to dryness in vacuo

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

实验步骤: The mixture of methyl cyanoacetimidate hydrochloride (43.47 g, 0.32 mole) and 4-nitro-2-aminophenol (24.9 g, 0.16 mole) in methanol (260 ml) was heated at reflux for 3 h. The mixture was placed in an ice bath for 30 minutes and was filtered. The solid material was suspended in water (300 ml), stirred for a few minutes and filtered. It was washed with water (200 ml) and air dried to give 4-nitro-2-benzoxazoleacetonitrile (27.38 g, 83%). was heated at reflux for 3 h was filtered filtered It was washed with water (200 ml) and air dried