5-[(二甲基氨基)甲基]-2-呋喃甲醇

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:

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: N-(2-Mercaptoethyl)-N'-methyl-2-nitro-1,1-ethenediamine (354 mg) in concentrated hydrochloric acid (2 ml) was added dropwise to 5-(dimethylamino)methyl-2-furanylmethanol (428 mg) at 0°. After standing at 0° for 7 days the reaction was diluted with water (3 ml), excess potassium carbonate was added and the solid extracted with ethyl acetate (50 ml). was added the solid extracted with ethyl acetate (50 ml)

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

实验步骤: A solution of 2-chloroethylamine hydrochloride (6.25 g) in dry dimethylformamide was added dropwise to a stirred, cooled solution of potassium tert-butoxide (8.96 g) and 5-(dimethylamino)methyl-2-furanmethanol (12.4 g) in the same solvent. After 2 hr solvent was removed, the residue basified and extracted with ethyl acetate. The residue after removal of solvent was treated in ethanol with ethanolic oxalic acid. The crystalline salt was recrystallised from ethanol to give 2-[[5-(dimethylamino)methyl-2-furanyl]methoxy]ethanamine, bis oxalate, m.p. 130°-133° (3.05 g). After 2 hr solvent was removed the residue basified and extracted with ethyl acetate The residue after removal of solvent was treated in ethanol with ethanolic oxalic acid The crystalline salt was recrystallised from ethanol

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

实验步骤: To a solution of 5-(dimethylamino)methyl-2-furanmethanol (6.2 g) and ethylene imine (2.82 g) in dry tetrahydrofuran was added a solution of methanesulphonic acid (11.6 g) in tetrahydrofuran (40 ml). The solution was evaporated and the oily residue heated at 98°-100° for 10 mins. After 18 hr, 5 N sodium hydroxide (60 ml) was added and the solution evaporated to dryness. Anhydrous sodium sulphate and ethyl acetate (150 ml) were added and after 2 hr the suspension was filtered, treated with decolourising charcoal and evaporated. The resulting oil was chromatographed on silica, firstly with methanol-ammonia 0.88 79:1, and the eluate discarded, and secondly with methanol-ammonia 0.88 19:1. This eluate was evaporated to give an oil from which the bisoxalate salt of 2-[[5-(dimethylamino)methyl-2-furanyl]methoxy]ethanamine (from ethanol) 0.2 g, m.p. 125°-128°, was obtained. The solution was evaporated the oily residue heated at 98°-100° for 10 mins 5 N sodium hydroxide (60 ml) was added the solution evaporated to dryness Anhydrous sodium sulphate and ethyl acetate (150 ml) were added and after 2 hr the suspension was filtered treated with decolourising charcoal evaporated The resulting oil was chromatographed on silica, firstly with methanol-ammonia 0.88 79:1 This eluate was evaporated

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

实验步骤: A mixture of methanesulphonic acid (86 g), 5-[(dimethylamino)methyl]-2-furanmethanol (15.5 g) and 4-aminobutanol (17.8 g) in dry tetrahydrofuran was heated at 100° for 11/2 h. Excess sodium carbonate was added to the cooled solution, the suspension was filtered and the filtrate was evaporated to give a red oil which was dissolved in water and extracted with ether. The extract was distilled to give the title compound as an oil (6.6 g) b.p. 100°-110°, 0.08 mm. TLC silica, methanol/ammonia 0.88 80:1, Rf 0.3. was heated at 100° for 11/2 h the suspension was filtered the filtrate was evaporated to give a red oil which extracted with ether The extract was distilled

反应条件: temp:0.00; pressure:0.00; stir: