Double ring-opening reactions of bis-cyclopropanes promoted by iron salts

Article abstract of DOI:10.1055/s-1999-2582

Certain bis-cyclopropanes were prepared from the corresponding dienol silane and, on treatment with ferric salts, were found to undergo two sequential C-C bond cleavages to give products corresponding to overall two carbon ring-expansion. In one case the nature of the product obtained was found to depend upon the types of ferric salts employed.