Recent developments of diazo compounds in organic synthesis Diazo compounds are versatile substances with diverse transformations in organic synthesis and other fields. Studies of diazo compounds have been ongoing for a very long time but still attract significant attention within the organic chemistry community with new papers related to diazo compounds appearing at a daily pace. Over the past twenty years there have been over fifty reviews and accounts related to the reactions of diazo compounds but most of them cover limited aspects of diazo compounds. In addition to organic synthesis diazo compounds have found applications in interdisciplinary fields such as material sciences chemical biology and also polymerization. In this comprehensive book the authors cover the most recent advances in the fields related to diazo compounds including the application of donor acceptor carbenes carbene based cross coupling reactions and polymerizations as well as the breakthrough in catalytic asymmetric carbene O H S H and N H bond insertions. They also cover the application of flow chemistry in diazo reactions. The authors aim to provide a contemporary and comprehensive review for investigators engaged in or with interest in diazo compounds to boost further developments in this fascinating field New developments in the synthesis of diazo compounds Development of new catalysts for metal carbene transformations Cyclopropanation and related reactions Insertion reactions Ylide formation and related reactions Wolff rearrangement and related 1 2 shift reactions Olefination with diazocarbonyl compounds Vinyl diazoacetate transformations Diazo compounds as 1 3 dipoles in [3+2] cycloaddition Reactions with diazo compounds as nucleophiles or electrophiles Transition metal catalyzed cross coupling with diazo compounds Polymerization with diazo compounds Diazo compounds in flow chemistry Application of diazo compounds in total synthesis Miscellaneous reactions.