Kinetics and mechanism of chlorination of p-aminobenzoic acid by chloramine-B |
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| Authors: | B. Jayaram and S. M. Mayanna |
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| Affiliation: | (1) Department of Chemistry, Central College, Bangalore University, 560 001 Bangalore, India |
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| Abstract: | ![]()
The chlorination of p-aminobenzoic acid (PABA) by chloramine-B (CAB) in HCl medium at 303 K indicates simultaneous catalysis by H+ and Cl–. The reaction is first order in [CAB] and [HCl], but fractional order in [PABA]. The observed solvent isotope effect is 1.52. A suitable mechanism is proposed.
          -        (PABA)  -B (CAB)  HCl 303    H+ Cl–.      [PABA].     1,52.   .
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