The chemistry of tetrachlorodiborane(4). II. Reactions with saturated ring hydrocarbons

Article abstract of DOI:10.1016/S0022-328X(00)88283-2

Tetrachlorodiborane(4) reacts with cyclopropane, methylcyclopropane and dimethylcyclopropanes to give ring cleavage addition compounds. IR and NMR data support structures with dichloroboryl groups in the 1,3 position of the hydrocarbon chain. Some evidence is presented to support a stereospecific reaction which involves a 4-centered transition state comparable to that which has been postulated for subchloride addition to olefins. No reaction occurs with 1,1-dichlorocyclopropane or cyclobutane.