异氰酸2-碘苯酯

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: To a stirred solution of tert-butyl 4-amino-3-methoxyphenylacetate (1.94 g, 8.16 mmol) in THF (20 ml) was added 2-iodophenylisocyanate (2.0 g, 8.16 mmol) and Et3N (114 ul, 0.816 mmol). After stirring overnight, the mixture was poured into 1 N HCl (200 ml). The resulting precipitate was collected by filtration and dissolved in CHCl3 (200 ml). The solution was dried over MgSO4 and evaporated to give tert-butyl 4-[N′-(2-iodophenyl)ureido]-3-methoxyphenylacetate (3.93 g, quant) as a pale yellow amorphous solid 1H-NMR (CDCl3) δ1.44 (s, 9 H), 3.49 (s, 2 H), 3.85 (s, 3 H), 6.78-6.88 (m, 4 H), 7.07 (s, 1 H), 7.31-7.35 (m, 1 H), 7.76 (dd, J=7.8, 1.5 Hz, 1 H), 7.95 (d, J=8.3 Hz, 1 H), 7.99 (dd, J=8.3, 1.5 Hz, 1 H). MS (ESI), m/z 483 (M++1). The resulting precipitate was collected by filtration dissolved in CHCl3 (200 ml) The solution was dried over MgSO4 evaporated

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

实验步骤: To a stirred solution of tert-butyl 4-amino-3-methoxyphenylacetate (1.94 g, 8.16 mmol) in THF (20 ml) was added 2-iodophenylisocyanate (2.0 g, 8.16 mmol) and Et3 N (114 μl, 0.816 mmol). After stirring overnight, the mixture was poured into 1 N HCl (200 ml). The resulting precipitate was collected by filtration and dissolved in CHCl3 (200 ml). The solution was dried over MgSO4 and evaporated to give tert-butyl 4-[N′-(2-iodophenyl)ureido]-3-methoxyphenylacetate (3.93 g, quant) as a pale yellow amorphous solid. 1H-NMR (CDCl3)δ 1.44 (s, 9 H), 3.49 (s, 2 H), 3.85 (s, 3 H), 6.78–6.88 (m, 4 H), 7.07 (s, 1 H), 7.31–7.35 (m, 1 H), 7.76 (dd, J=7.8, 1.5 Hz, 1 H), 7.95 (d, J=8.3 Hz, 1 H), 7.99 (dd, J=8.3, 1.5 Hz, 1 H). MS (ESI), m/z 483 (M++1). The resulting precipitate was collected by filtration dissolved in CHCl3 (200 ml) The solution was dried over MgSO4 evaporated

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

实验步骤: To a solution of 2-iodophenyl isocyanate (3.36 g, 13.7 mmol) in THF (250 mL) was added ethyl 2-aminobenzoate (5.1 mL, 34.5 mmol). The resulting mixture was stirred at room temperature for 8 hours, evaporated and chromatographed (silica gel, 10% EtOAc in hexanes) to give 4.4 g (78%) of ethyl 2-(2-iodophenylureido)benzoate as a white solid, mp 162°-164° C. evaporated chromatographed (silica gel, 10% EtOAc in hexanes)

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

实验步骤: To a solution of 2-iodophenyl isocyanate (3.36 g, 13.7 mmol) in THF (250 mL) was added ethyl 2-aminobenzoate (5.1 mL, 34.5 mmol). The resulting mixture was stirred at room temperature for 8 hours, evaporated and chromatographed (silica gel, 10% EtOAc in hexanes) to give 4.4 g (78%) of ethyl 2-(2-iodophenylureido)benzoate as a white solid, mp 162°-164° C. evaporated chromatographed (silica gel, 10% EtOAc in hexanes)

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

实验步骤: A solution of methylamine in THF (2 M, 19 mL, 39 mmol) was cooled to 0° C. and 2-iodophenylisocyanate (0.68 g, 12.6 mmol) was added dropwise over 5 minutes. The solution was stirred for 30 minutes, after which it was evaporated to dryness in vacuo to yield a white solid (2.05 g) 1H NMR (400 MHz, d6-DMSO): δ 7.81-7.77 (2H, m), 7.53 (1H, s), 7.30-7.26 (1H, m), 6.87 (1H, d, J=4.3 Hz), 6.77-6.73 (1H, m), 2.65 (3H, d, J=4.6 Hz). after which it was evaporated to dryness in vacuo

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

实验步骤: To a stirred solution of tert-butyl 4-amino-3-methoxyphenylacetate (1.94 g, 8.16 mmol) in THF (20 ml) was added 2-iodophenylisocyanate (2.0 g, 8.16 mmol) and Et3N (114 ul, 0.816 mmol). After stirring overnight, the mixture was poured into 1 N HCl (200 ml). The resulting precipitate was collected by filtration and dissolved in CHCl3 (200 ml). The solution was dried over MgSO4 and evaporated to give tert-butyl 4-[N′-(2-iodophenyl)ureido]-3-methoxyphenylacetate (3.93 g, quant) as a pale yellow amorphous solid 1H-NMR (CDCl3) δ1.44 (s, 9 H), 3.49 (s, 2 H), 3.85 (s, 3 H), 6.78-6.88 (m, 4 H), 7.07 (s, 1 H), 7.31-7.35 (m, 1 H), 7.76 (dd, J=7.8, 1.5 Hz, 1 H), 7.95 (d, J=8.3 Hz, 1 H), 7.99 (dd, J=8.3, 1.5 Hz, 1 H). MS (ESI), m/z 483 (M++1). The resulting precipitate was collected by filtration dissolved in CHCl3 (200 ml) The solution was dried over MgSO4 evaporated

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

实验步骤: To a stirred solution of tert-butyl 4-amino-3-methoxyphenylacetate (1.94 g, 8.16 mmol) in THF (20 ml) was added 2-iodophenylisocyanate (2.0 g, 8.16 mmol) and Et3N (114 ul, 0.816 mmol). After stirring overnight, the mixture was poured into 1 N HCl (200 ml). The resulting precipitate was collected by filtration and dissolved in CHCl3 (200 ml). The solution was dried over MgSO4 and evaporated to give tert-butyl 4-[N′-(2-iodophenyl)ureido]-3-methoxyphenylacetate (3.93 g, quant) as a pale yellow amorphous solid 1H-NMR (CDCl3) δ1.44 (s, 9 H), 3.49 (s, 2 H), 3.85 (s, 3 H), 6.78-6.88 (m, 4 H), 7.07 (s, 1 H), 7.31-7.35 (m, 1 H), 7.76 (dd, J=7.8, 1.5 Hz, 1 H), 7.95 (d, J=8.3 Hz, 1 H), 7.99 (dd, J=8.3, 1.5 Hz, 1 H). MS (ESI), m/z 483 (M++1). The resulting precipitate was collected by filtration dissolved in CHCl3 (200 ml) The solution was dried over MgSO4 evaporated

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

实验步骤: To a stirred solution of tert-butyl 4-amino-3-methoxyphenylacetate (1.94 g, 8.16 mmol) in THF (20 ml) was added 2-iodophenylisocyanate (2.0 g, 8.16 mmol) and Et3 N (114 μl, 0.816 mmol). After stirring overnight, the mixture was poured into 1 N HCl (200 ml). The resulting precipitate was collected by filtration and dissolved in CHCl3 (200 ml). The solution was dried over MgSO4 and evaporated to give tert-butyl 4-[N′-(2-iodophenyl)ureido]-3-methoxyphenylacetate (3.93 g, quant) as a pale yellow amorphous solid. 1H-NMR (CDCl3)δ 1.44 (s, 9 H), 3.49 (s, 2 H), 3.85 (s, 3 H), 6.78–6.88 (m, 4 H), 7.07 (s, 1 H), 7.31–7.35 (m, 1 H), 7.76 (dd, J=7.8, 1.5 Hz, 1 H), 7.95 (d, J=8.3 Hz, 1 H), 7.99 (dd, J=8.3, 1.5 Hz, 1 H). MS (ESI), m/z 483 (M++1). The resulting precipitate was collected by filtration dissolved in CHCl3 (200 ml) The solution was dried over MgSO4 evaporated