Reaction #71867

Reaction equation

methyl 3-[(7-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoate

Methyl 3-[(7-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoate

lithium hydroxide

methanol

→

title compound

Yield 71.3%

3-[(7-{[(4-Chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoic acid

Yield 71.3%

Solvents

tetrahydrofuran

Conditions

Procedure

The same operation as in Example (91d) was performed using methyl 3-[(7-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoate obtained in Example (100c) (0.16 g, 0.35 mmol), 2 N lithium hydroxide (3 mL, 6 mmol), methanol (3 mL) and tetrahydrofuran (8 mL), to obtain 0.11 g of the title compound as a light pink solid (71%).

Source