Multistep Continuous‐Flow Microchemical Synthesis Involving Multiple Reactions and Separations

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All for one and one for all: A continuous-flow, multistep microchemical synthesis of carbamates starting from aqueous azide and organic azoyl chloride by using the Curtius rearrangement reaction is described. The procedure involves three reaction steps and two separation steps (one gas–liquid and one liquid–liquid). Formation of a microreactor network for parallel synthesis of analogous compounds is also demonstrated.