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Step 7: To a solution of the acid 6 (10 mmol) in diethylether (30 mL) at (S 0I" ethylchloroformate (1.3 g, 12mmol) and N-methylmorpholine (1.3 g, 13 mmol) were added and the mixture was stirred for 10 min. The solid was filtered off and the filtrate was used in the next stepStep 8: the filtrate was added to freshly prepared hydroxylamine (0.5 g, 15 mmol) in methanol. The reaction mixture was stirred at room temperature for 15 min. The solvent was evaporated and the residue was purified by silica gel column chromatography to obtain the final product 8.
[1-methyl-2-(7'-heptanoate)-5-Ν,Ν-bis(2'-chloroethyl)]-1H-benzimidazole[ No CAS ]
[ 1236199-60-2 ]
Yield
Reaction Conditions
Operation in experiment
88.5%
With hydroxylamine hydrochloride; potassium hydroxide; In methanol; at 20℃; for 3h;
A solution of hydroxylamine hydrochloride (56.7 g, 816 mmo 1)Mixed with methanol (145 mL)A solution of potassium hydroxide (45.8 g, 816 mmo 1) in methanol (270 mL)40 C for 15 min,Filter,Hydroxylamine in methanol solution,(2'-chloroethyl)] - 111-benzimidazole (16.98, 40.8 mmol) was added, and the mixture was stirred at room temperature for 3 hours,The reaction solution was poured into ice water (1300 mL)A 3N acetic acid solution was added dropwise to a pH of 6 to 7,Precipitation of a large number of white powder,Filter,Washed, dried,(2'-chloroethyl)] - lH-benzimidazole (abbreviated as NL-101) as a white solid [1-methyl-2- (7'-heptahydroxamic acid) -5-Ν, ), I.e., the target compound I 15.0g88.5%
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
General procedure: <strong>[1236199-60-2]NL-101</strong> (0.03 g) was incubated with amino acids (0.02 g) and peptides (0.03 g) at 37 oC in a buffer solution, which pH was 5.3,7.3 and 9.3 respectively as the experimental surroundings. The pH of the samples was determined by a pH-meter (FE 20, MettlerToledo). All samples were kept at -20 oC until further analysis. The desalting step of the <strong>[1236199-60-2]NL-101</strong> adducts obtained under theexperimental conditions was not carried out before MS analysis.
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