... 31(11)3931~—3938(1983) Silicon-Assisted Ring Opening of Cyclopropyl Ketones with Boron Trifluoride—Acetic Acid Complex“ MASAHITO OCHIAI, KENZO SUMI, and EIICHI ... and Notes 1) A part of this work has been reported in a preliminary form: M. Ochiai, K: Sumi, and E ...