"Cyclopropanone is an organic compound with molecular formula C3H4O consisting of a cyclopropane carbon 
framework with a ketone functional group. The parent compound is labile with melting point −90 °C and has been prepared by reaction of ketene with diazomethane at −145 °C.[1][2] Derivatives of cyclopropanone are of some interest to organic chemistry."
"In organic synthesis the use of cyclopropanone itself is substituted by that of synthons like acetals cyclopropanone ethyl hemiacetal[4] or cyclopropanone ethyl trimethylsilyl acetal."