“…The use of the ultraviolet spectrophotometric approach extends to the rate of sulfonation of fluorobenzenes ( 225), the chlorination of butylamine with tertbutylhypochlorite (30), the nitration of cinnoline and 2-methylcinnolinium perchlorate (278). The rate of decarboxylation of 4-aminobenzoic acids (253), the dehydration of streptovitacin A (291), the acid degradation of aldopentoses to furfural (141), the thermal decomposition of p-and rro-substituted benzenediazonium salts (342), the oxidation of nitrosophenol to phenol with dilute nitric acid (295), and the reduction of AuBr<by sulfite and thiocyanate (212).…”