[3-amino-5-(hydroxymethyl)phenyl]methanol

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (5-amino-1,3-phenylene)dimethanol (2.5 g, 16.32 mmol) and 2-(methyldithio)isobutyraldehyde (2.347 ml, 16.32 mmol) were stirred at ambient temperature in absolute ethanol (82 ml) until completely dissolved (3 hours). The mixture was cooled to 0° C. in an ice bath and sodium borohydride (0.741 g, 19.59 mmol) was added. The reaction was stirred for 1 hour at 0° C., and was then quenched slowly with cold 5% HCl solution. The mixture was diluted with dichloromethane and the pH was adjusted to pH=8 with saturated sodium bicarbonate solution then extracted with dichloromethane and then washed with brine. The organic extracts were dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. Purification by silica gel chromatography (MeOH/DCM) yielded (5-(2-methyl-2-(methyldisulfanyl)propylamino)-1,3-phenylene)dimethanol (3 g, 65%) as a white solid. 1H NMR (400 Hz, CDCl3): δ6.62 (s, 1H), 6.54 (s, 2H), 4.53 (s, 4H), 3.13 (s, 2H), 2.30 (s, 3H), 1.32 (s, 6H). See FIG. 47. until completely dissolved (3 hours) was then quenched slowly with cold 5% HCl solution The mixture was diluted with dichloromethane then extracted with dichloromethane washed with brine The organic extracts were dried over anhydrous sodium sulfate filtered concentrated under reduced pressure Purification by silica gel chromatography (MeOH/DCM)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (5-amino-1,3-phenylene)dimethanol (2.5 g, 16.32 mmol) and 2-(methyldithio)isobutyraldehyde (2.347 ml, 16.32 mmol) were stirred at ambient temperature in absolute ethanol (82 ml) until completely dissolved (3 hours). The mixture was cooled to 0° C. in an ice bath and sodium borohydride (0.741 g, 19.59 mmol) was added. The reaction was stirred for 1 hour at 0° C., and was then quenched slowly with cold 5% HCl solution. The mixture was diluted with dichloromethane and the pH was adjusted to pH=8 with saturated sodium bicarbonate solution then extracted with dichloromethane and then washed with brine. The organic extracts were dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. Purification by silica gel chromatography (MeOH/DCM) yielded (5-(2-methyl-2-(methyldisulfanyl)propylamino)-1,3-phenylene)dimethanol (3 g, 65%) as a white solid. 1H NMR (400 Hz, CDCl3): δ6.62 (s, 1H), 6.54 (s, 2H), 4.53 (s, 4H), 3.13 (s, 2H), 2.30 (s, 3H), 1.32 (s, 6H). See FIG. 47. until completely dissolved (3 hours) was then quenched slowly with cold 5% HCl solution The mixture was diluted with dichloromethane then extracted with dichloromethane washed with brine The organic extracts were dried over anhydrous sodium sulfate filtered concentrated under reduced pressure Purification by silica gel chromatography (MeOH/DCM)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (5-amino-1,3-phenylene)dimethanol (2.5 g, 16.32 mmol) and 2-(methyldithio)isobutyraldehyde (2.347 ml, 16.32 mmol) were stirred at ambient temperature in absolute ethanol (82 ml) until completely dissolved (3 hours). The mixture was cooled to 0° C. in an ice bath and sodium borohydride (0.741 g, 19.59 mmol) was added. The reaction was stirred for 1 hour at 0° C., and was then quenched slowly with cold 5% HCl solution. The mixture was diluted with dichloromethane and the pH was adjusted to pH=8 with saturated sodium bicarbonate solution then extracted with dichloromethane and then washed with brine. The organic extracts were dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. Purification by silica gel chromatography (MeOH/DCM) yielded (5-(2-methyl-2-(methyldisulfanyl)propylamino)-1,3-phenylene)dimethanol (3g, 65%) as a white solid. 1H NMR (400 Hz, CDCl3): δ6.62 (s, 1H), 6.54 (s, 2H), 4.53 (s, 4H), 3.13 (s, 2H), 2.30 (s, 3H), 1.32 (s, 6H). See FIG. 47. until completely dissolved (3 hours) was then quenched slowly with cold 5% HCl solution The mixture was diluted with dichloromethane then extracted with dichloromethane washed with brine The organic extracts were dried over anhydrous sodium sulfate filtered concentrated under reduced pressure Purification by silica gel chromatography (MeOH/DCM)

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (5-amino-1,3-phenylene)dimethanol (2.5 g, 16.32 mmol) and 2-(methyldithio)isobutyraldehyde (2.347 ml, 16.32 mmol) were stirred at ambient temperature in absolute ethanol (82 ml) until completely dissolved (3 hours). The mixture was cooled to 0° C. in an ice bath and sodium borohydride (0.741 g, 19.59 mmol) was added. The reaction was stirred for 1 hour at 0° C., and was then quenched slowly with cold 5% HCl solution. The mixture was diluted with dichloromethane and the pH was adjusted to pH=8 with saturated sodium bicarbonate solution then extracted with dichloromethane and then washed with brine. The organic extracts were dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. Purification by silica gel chromatography (MeOH/DCM) yielded (5-(2-methyl-2-(methyldisulfanyl)propylamino)-1,3-phenylene)dimethanol (3g, 65%) as a white solid. 1H NMR (400 Hz, CDCl3): δ6.62 (s, 1H), 6.54 (s, 2H), 4.53 (s, 4H), 3.13 (s, 2H), 2.30 (s, 3H), 1.32 (s, 6H). See FIG. 47. until completely dissolved (3 hours) was then quenched slowly with cold 5% HCl solution The mixture was diluted with dichloromethane then extracted with dichloromethane washed with brine The organic extracts were dried over anhydrous sodium sulfate filtered concentrated under reduced pressure Purification by silica gel chromatography (MeOH/DCM)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred mixture of methyl 1-(tosyloxy)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265b)(700 mg, 0.890 mmol) and (5-amino-1,3-phenylene)dimethanol (26) (150 mg, 0.978 mmol) in anhydrous DMF (2.0 ml) was added potassium carbonate (184 mg, 1.334 mmol). The reaction was stirred at 80° C. overnight. The mixture was cooled to room temperature, quenched with water and extracted with 10% Methanol/Methylene chloride. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The crude product was purified by silica gel chromatography (eluted with 5→15% MeOH/CH2Cl2) to give methyl 1-(3,5-bis(hydroxymethyl) phenylamino)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265c) (285 mg, 42%). 1H NMR (400 Hz, CDCl3): δ 6.62 (s, 1H), 6.51 (s, 2H), 4.52 (s, 4H), 3.72 (t, J=6.4 Hz, 2H), 3.65 (s, 3H), 3.61 (m, 48H), 2.94 (s, 2H), 2.63 (s, 1H), 2.57 (t, J=6.4 Hz, 2H); MS (m/z): found 790.4 (M+Na)+. The mixture was cooled to room temperature quenched with water extracted with 10% Methanol/Methylene chloride The organic layer was washed with brine dried over anhydrous magnesium sulfate filtered concentrated in vacuo The crude product was purified by silica gel chromatography (eluted with 5→15% MeOH/CH2Cl2)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred mixture of methyl 1-(tosyloxy)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265b)(700 mg, 0.890 mmol) and (5-amino-1,3-phenylene)dimethanol (26) (150 mg, 0.978 mmol) in anhydrous DMF (2.0 ml) was added potassium carbonate (184 mg, 1.334 mmol). The reaction was stirred at 80° C. overnight. The mixture was cooled to room temperature, quenched with water and extracted with 10% Methanol/Methylene chloride. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The crude product was purified by silica gel chromatography (eluted with 5→15% MeOH/CH2Cl2) to give methyl 1-(3,5-bis(hydroxymethyl) phenylamino)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265c) (285 mg, 42%). 1H NMR (400 Hz, CDCl3): δ 6.62 (s, 1H), 6.51 (s, 2H), 4.52 (s, 4H), 3.72 (t, J=6.4 Hz, 2H), 3.65 (s, 3H), 3.61 (m, 48H), 2.94 (s, 2H), 2.63 (s, 1H), 2.57 (t, J=6.4 Hz, 2H); MS (m/z): found 790.4 (M+Na)+. The mixture was cooled to room temperature quenched with water extracted with 10% Methanol/Methylene chloride The organic layer was washed with brine dried over anhydrous magnesium sulfate filtered concentrated in vacuo The crude product was purified by silica gel chromatography (eluted with 5→15% MeOH/CH2Cl2)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of methyl 3-(2-(2-(2-(tosyloxy)ethoxy)ethoxy)ethoxy)propanoate (263a) (250 mg, 0.640 mmol) and (5-amino-1,3-phenylene)dimethanol (26)(108 mg, 0.704 mmol) in anhydrous DMF (1.4 ml) was added potassium carbonate (133 mg, 0.960 mmol). The reaction stirred for 18 hours at 80° C. and then was allowed to cool to room temperature. The mixture was quenched with water and extracted two times with ethyl acetate. The organic extracts were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated. Purification by silica gel chromatography (5% Methanol/methylene chloride) yielded methyl 3-(2-(2-(2-(3,5-bis(hydroxymethyl)phenylamino)ethoxy) ethoxy) ethoxy)propanoate (264a) (61 mg, 25%); 1H NMR (400 Hz, CDCl3): δ 6.58 (s, 1H), 6.47 (s, 2H), 4.49 (s, 4H), 3.67 (t, J=6.4 Hz, 2H), 3.62 (s, 3H), 3.64-3.54 (m, 10H), 3.21 (t, J=5.2 Hz, 2H), 2.51 (t, J=6.4 Hz, 2H); MS (m/z): found 394.3 (M+Na)+. to cool to room temperature The mixture was quenched with water extracted two times with ethyl acetate The organic extracts were washed with brine dried over anhydrous magnesium sulfate filtered concentrated Purification by silica gel chromatography (5% Methanol/methylene chloride)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred mixture of methyl 1-(tosyloxy)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265b) (700 mg, 0.890 mmol) and (5-amino-1,3-phenylene)dimethanol (26) (150 mg, 0.978 mmol) in anhydrous DMF (2.0 ml) was added potassium carbonate (184 mg, 1.334 mmol). The reaction was stirred at 80° C. overnight. The mixture was cooled to room temperature, quenched with water and extracted with 10% Methanol/Methylene chloride. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The crude product was purified by silica gel chromatography (eluted with 5→15% MeOH/CH2Cl2) to give methyl 1-(3,5-bis(hydroxymethyl)phenylamino)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265c) (285 mg, 42%). 1H NMR (400 Hz, CDCl3): δ 6.62 (s, 1H), 6.51 (s, 2H), 4.52 (s, 4H), 3.72 (t, J=6.4 Hz, 2H), 3.65 (s, 3H), 3.61 (m, 48H), 2.94 (s, 2H), 2.63 (s, 1H), 2.57 (t, J=6.4 Hz, 2H); MS (m/z). found 790.4 (M+Na)+. The mixture was cooled to room temperature quenched with water extracted with 10% Methanol/Methylene chloride The organic layer was washed with brine dried over anhydrous magnesium sulfate filtered concentrated in vacuo The crude product was purified by silica gel chromatography (eluted with 5→15% MeOH/CH2Cl2)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of methyl 3-(2-(2-(2-(tosyloxy)ethoxy)ethoxy)ethoxy)propanoate (263a) (250 mg, 0.640 mmol) and (5-amino-1,3-phenylene)dimethanol (26) (108 mg, 0.704 mmol) in anhydrous DMF (1.4 ml) was added potassium carbonate (133 mg, 0.960 mmol). The reaction stirred for 18 hours at 80° C. and then was allowed to cool to room temperature. The mixture was quenched with water and extracted two times with ethyl acetate. The organic extracts were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated. Purification by silica gel chromatography (5% Methanol/methylene chloride) yielded methyl 3-(2-(2-(2-(3,5-bis(hydroxymethyl)phenylamino)ethoxy)ethoxy)ethoxy)propanoate (264a) (61 mg, 25%); 1H NMR (400 Hz, CDCl3): δ 6.58 (s, 1H), 6.47 (s, 2H), 4.49 (s, 4H), 3.67 (t, J=6.4 Hz, 2H), 3.62 (s, 3H), 3.64-3.54 (m, 10H), 3.21 (t, J=5.2 Hz, 2H), 2.51 (t, J=6.4 Hz, 2H); MS (m/z). found 394.3 (M+Na)+. to cool to room temperature The mixture was quenched with water extracted two times with ethyl acetate The organic extracts were washed with brine dried over anhydrous magnesium sulfate filtered concentrated Purification by silica gel chromatography (5% Methanol/methylene chloride)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a mixture of methyl 3-(2-(2-(2-(tosyloxy)ethoxy)ethoxy)ethoxy)propanoate (263a) (250 mg, 0.640 mmol) and (5-amino-1,3-phenylene)dimethanol (26) (108 mg, 0.704 mmol) in anhydrous DMF (1.4 ml) was added potassium carbonate (133 mg, 0.960 mmol). The reaction stirred for 18 hours at 80° C. and then was allowed to cool to room temperature. The mixture was quenched with water and extracted two times with ethyl acetate. The organic extracts were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated. Purification by silica gel chromatography (5% Methanol/methylene chloride) yielded methyl 3-(2-(2-(2-(3,5-bis(hydroxymethyl)phenylamino)ethoxy)ethoxy)ethoxy)propanoate (264a) (61 mg, 25%); 1H NMR (400 Hz, CDCl3): δ 6.58 (s, 1H), 6.47 (s, 2H), 4.49 (s, 4H), 3.67 (t, J=6.4 Hz, 2H), 3.62 (s, 3H), 3.64-3.54 (m, 10H), 3.21 (t, J=5.2 Hz, 2H), 2.51 (t, J=6.4 Hz, 2H); MS (m/z). found 394.3 (M+Na)+. to cool to room temperature The mixture was quenched with water extracted two times with ethyl acetate The organic extracts were washed with brine dried over anhydrous magnesium sulfate filtered concentrated Purification by silica gel chromatography (5% Methanol/methylene chloride)