Kinetic study on the cleavage of N-phenylphthalimide (NPhPT) in the presence of 0.05 M NH 2 NH 2 and mixed H 2 O-CH 3 CN solvents reveals the occurrence of reaction scheme
Kinetic study on the cleavage of N-(4 -methoxyphenyl)phthalamic acid (NMPPAH) in mixed H 2 O-CH 3 CN and H 2 O-1,4-dioxan solvents containing 0.05 M HCl reveals the formation of phthalic anhydride (PAn)/phthalic acid (PA) as the sole or major product. Pseudo first-order rate constants (k 1 ) for the conversion of NMPPAH to PAn decrease nonlinearly from 60.4 × 10 −5 to 2.64 × 10 −5 s −1 with the increase in the contents of 1,4-dioxan from 10 to 80% v/v in mixed aqueous solvents. The rate of cleavage of NMPPAH in mixed H 2 O-CH 3 CN solvents at ≥50% v/v CH 3 CN follows an irreversible consecutive reaction path:
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