O-Phenylenediamine → HCID 49805202, compound

Participants

Reaction Steps

Phenylenediamine (217 mg, 2.01 mmol), 1H-benzothiazol-1-yloxytris-(dimethylamino)phosphonium hexafluorophosphate (BOP; 667 mg, 1.51 mmol) and triethyl amine (203 mg, 2.01 mmol) were dissolved in 3 mL of DMF. 350 mg of the 4-((3-bromo-2-methylbenzamido)methyl)benzoate obtained in step 2 (1.01 mmol) was added thereto and stirred at room temperature overnight. The resulting mixture was subjected to thin layer chromatography to monitor the amount of 4-((3-bromo-2-methylbenzamido)methyl)benzoate consumed, and DMF was removed under a reduced pressure. 50 mL of saturated sodium bicarbonate was added to the resulting mixture, extracted with methylene chloride (3×75 mL) and the separated organic layer was dried over anhydrous magnesium sulfate. The residue was dissolved in methylene chloride and n-pentane was added thereto. The resulting solid thus obtained was filtered and washed with ethanol to obtain the title compound (231 mg, 52%).

Provenance & Evidence