SEARCH Articles Figures Tables 2+2]-Cycloaddition with dichloroketene Alkynes dichloroketene Cycloaddition of dichloroketene Cycloaddition reactions Dichloroketene Cycloadditions with dichloroketene Cyclopentadiene dichloroketene Dichloroacetyl chloride, dichloroketen from Dichloroketene 2 + 2-cycloaddition Dichloroketene Cycloaddition with cyclopentadiene Dichloroketene generation Dichloroketene synthesis Dichloroketene, cycloadditions Oxygen dichloroketene Preparation dichloroketene