4-Methoxyphenylacetyl chloride → 4-((N-(2-(tert-butoxy)-2-oxoethyl)-4-(2-(4-methoxyphenyl)acetamido)benzamido)methyl)phenyl 4-(heptyloxy)benzoate

Participants

Reaction Steps

Prepared using General Procedure 7: To a stirring solution of 4-((4-amino-N-(2-(tert-butoxy)-2-oxoethyl)benzamido)methyl)phenyl 4-(heptyloxy)benzoate INT-4 (70 mg, 0.12 mmol) in DCM (2 mL) was added TEA (0.042 mL, 0.31 mmol) and 2-(4-methoxyphenyl)acetyl chloride (0.85 mL, 0.171 mmol). Additional TEA (0.042 mL, 0.31 mmol) and 2-(4-methoxyphenyl)acetyl chloride (0.85 mL, 0.171 mmol) were added and the reaction stirred for 30 min to yield 4-((N-(2-(tert-butoxy)-2-oxoethyl)-4-(2-(4-methoxyphenyl)acetamido)benzamido)methyl)phenyl 4-(heptyloxy)benzoate INT-5. The crude reaction mixture was concentrated to 1.0 mL volume and carried onto the next step without further purification. LCMS-ESI (m/z) calculated for C43H50N2O8: 722; no m/z observed, tR=3.24 min (Method 3).

Provenance & Evidence