Data on the reactions of cyclopropene compounds with acids, halogen- a
nd sulfur-containing electrophilic reagents, mercury salts are systema
tized. The influence of electrophile nature and structure of cycloprop
ene derivatives on the processes of remaining and opening ring, the st
ereochemistry of reagents addition to cyclopropene bond and formation
of ring opening products are reviewed. Mechanism of reactions are disc
ussed.