Nucleophilic Substitution
7. Substitution Reactions / Nucleophilic Substitution / Problem 4
The following illustration outlines the steps involved in the synthesis of 2,3-dihydrobenzo[b][1,4]dioxine-2,3-dicarboxylic acid:
![](https://lh7-rt.googleusercontent.com/slidesz/AGV_vUcGtsYS033631blrVsoSwwLt4RVsqWLV9HMlhtuF6TDBxEoOY3_eoGK8-4ZqV42nrxMEbOoh-1IxIcV9J8SSnzzcO8dvXZhSJ06S9r1glFgUKjmw4cBgfjjdVt-YE8wXBm4SowVRnWf5KglO9LXu6s=s2048?key=h3PZByzghhTTPvX8wICXPNvn)
Provide the structure of intermediate A and illustrate the mechanism for its formation.
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