Mechanistic evidence from variations in reaction conditions

4 Mechanistic evidence from variations in reaction conditions 

The following examples illustrate the strong evidence obtainable by product analysis under different reaction conditions. The simplest variations are reaction time and temperature. Monitoring reactions qualitatively as they proceed is also included here, because reactions are investigated at shorter than normal reaction times. More quantitative aspects of reaction monitoring are discussed in Section 2.6. First, however, some limitations need to be considered. If reaction conditions are varied, it cannot be established with certainty that the reaction mechanism does not change. Also, it needs to be established that any reaction 

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