A Novel Synthesis of β-Trichlorostannyl Ketones from Siloxycyclopropanes and Their Facile Dehydrostannation Affording 2-Methylene Ketones

Article abstract of DOI:10.1021/jo00362a046

Site-selective ring cleavage of siloxycyclopropanes 2 with stannic chloride (SnCl4) leads to good yields of β-trichlorostannyl ketones 3.Subsequent treatment of 3 with dimethyl sulfoxide (Me2SO) in chloroform at 60 deg C results in the facile dehydrostannation to give good yields of 2-methylene ketones 4.