Halodiazirines as Valuable Reagents for the Synthesis of Halocyclo­propanes

Abstract Halodiazirines have emerged as very useful reagents in photochemically or thermally mediated cyclopropanation reactions with alkenes. This short review highlights the synthetic applications of these reagents as precursors of halocarbenes in transformations with various alkenes. 1 Introduction 2 Cyclopropanation of Aryl Halodiazirines 3 Tandem Reactions Using Aryl Halodiazirines 4 Cyclopropanation of Alkyl- and Benzyl-halodiazirines 5 Cyclopropanation of Other Halodiazirines 6 Reactions of Halodiazirines with Alkynes 7 Conclusion and Outlook